PHENIX Collaboration, N. J. Abdulameer, U. Acharya, A. Adare, S. Afanasiev, C. Aidala, N. N. Ajitanand, Y. Akiba, H. Al-Bataineh, J. Alexander, M. Alfred, K. Aoki, N. Apadula, L. Aphecetche, J. Asai, H. Asano, E. T. Atomssa, R. Averbeck, T. C. Awes, B. Azmoun, V. Babintsev, M. Bai, G. Baksay, L. Baksay, A. Baldisseri, N. S. Bandara, B. Bannier, K. N. Barish, P. D. Barnes, B. Bassalleck, A. T. Basye, S. Bathe, S. Batsouli, V. Baublis, C. Baumann, A. Bazilevsky, M. Beaumier, S. Beckman, S. Belikov, R. Belmont, R. Bennett, A. Berdnikov, Y. Berdnikov, L. Bichon, A. A. Bickley, B. Blankenship, D. S. Blau, J. G. Boissevain, J. S. Bok, H. Borel, V. Borisov, K. Boyle, M. L. Brooks, J. Bryslawskyj, H. Buesching, V. Bumazhnov, G. Bunce, S. Butsyk, C. M. Camacho, S. Campbell, B. S. Chang, W. C. Chang, J. L. Charvet, C. -H. Chen, D. Chen, S. Chernichenko, M. Chiu, C. Y. Chi, I. J. Choi, J. B. Choi, R. K. Choudhury, T. Chujo, P. Chung, A. Churyn, V. Cianciolo, Z. Citron, B. A. Cole, M. Connors, P. Constantin, R. Corliss, M. Csanád, T. Csörgő, D. d'Enterria, T. Dahms, S. Dairaku, T. W. Danley, K. Das, A. Datta, M. S. Daugherity, G. David, K. DeBlasio, K. Dehmelt, A. Denisov, A. Deshpande, E. J. Desmond, O. Dietzsch, A. Dion, P. B. Diss, M. Donadelli, V. Doomra, J. H. Do, O. Drapier, A. Drees, K. A. Drees, A. K. Dubey, J. M. Durham, A. Durum, D. Dutta, V. Dzhordzhadze, Y. V. Efremenko, F. Ellinghaus, H. En'yo, T. Engelmore, A. Enokizono, R. Esha, K. O. Eyser, B. Fadem, N. Feege, D. E. Fields, M. Finger, Jr., M. Finger, D. Firak, D. Fitzgerald, F. Fleuret, S. L. Fokin, Z. Fraenkel, J. E. Frantz, A. Franz, A. D. Frawley, K. Fujiwara, Y. Fukao, T. Fusayasu, P. Gallus, C. Gal, P. Garg, I. Garishvili, H. Ge, F. Giordano, A. Glenn, H. Gong, M. Gonin, J. Gosset, Y. Goto, R. Granier de Cassagnac, N. Grau, S. V. Greene, M. Grosse Perdekamp, T. Gunji, T. Guo, H. -Å. Gustafsson, T. Hachiya, A. Hadj Henni, J. S. Haggerty, K. I. Hahn, H. Hamagaki, H. F. Hamilton, J. Hanks, R. Han, S. Y. Han, E. P. Hartouni, K. Haruna, S. Hasegawa, T. O. S. Haseler, K. Hashimoto, E. Haslum, R. Hayano, M. Heffner, T. K. Hemmick, T. Hester, X. He, J. C. Hill, A. Hodges, M. Hohlmann, R. S. Hollis, W. Holzmann, K. Homma, B. Hong, T. Horaguchi, D. Hornback, T. Hoshino, N. Hotvedt, J. Huang, T. Ichihara, R. Ichimiya, H. Iinuma, Y. Ikeda, K. Imai, J. Imrek, M. Inaba, A. Iordanova, D. Isenhower, M. Ishihara, T. Isobe, M. Issah, A. Isupov, D. Ivanishchev, B. V. Jacak, M. Jezghani, X. Jiang, J. Jin, Z. Ji, B. M. Johnson, K. S. Joo, D. Jouan, D. S. Jumper, F. Kajihara, S. Kametani, N. Kamihara, J. Kamin, S. Kanda, J. H. Kang, J. Kapustinsky, D. Kawall, A. V. Kazantsev, T. Kempel, J. A. Key, V. Khachatryan, A. Khanzadeev, K. M. Kijima, J. Kikuchi, B. Kimelman, B. I. Kim, C. Kim, D. H. Kim, D. J. Kim, E. Kim, E. -J. Kim, G. W. Kim, M. Kim, S. H. Kim, E. Kinney, K. Kiriluk, Á. Kiss, E. Kistenev, R. Kitamura, J. Klatsky, J. Klay, C. Klein-Boesing, D. Kleinjan, P. Kline, T. Koblesky, L. Kochenda, B. Komkov, M. Konno, J. Koster, D. Kotov, L. Kovacs, A. Kozlov, A. Kravitz, A. Král, G. J. Kunde, B. Kurgyis, K. Kurita, M. Kurosawa, M. J. Kweon, Y. Kwon, G. S. Kyle, Y. S. Lai, J. G. Lajoie, D. Layton, A. Lebedev, D. M. Lee, K. B. Lee, S. Lee, S. H. Lee, T. Lee, M. J. Leitch, M. A. L. Leite, B. Lenzi, P. Liebing, S. H. Lim, A. Litvinenko, H. Liu, M. X. Liu, T. Liška, X. Li, S. Lokos, D. A. Loomis, B. Love, D. Lynch, C. F. Maguire, Y. I. Makdisi, M. Makek, A. Malakhov, M. D. Malik, A. Manion, V. I. Manko, E. Mannel, Y. Mao, H. Masui, F. Matathias, L. Mašek, M. McCumber, P. L. McGaughey, D. McGlinchey, C. McKinney, N. Means, A. Meles, M. Mendoza, B. Meredith, Y. Miake, A. C. Mignerey, P. Mikeš, K. Miki, A. Milov, D. K. Mishra, M. Mishra, J. T. Mitchell, M. Mitrankova, Iu. Mitrankov, S. Miyasaka, S. Mizuno, A. K. Mohanty, P. Montuenga, T. Moon, Y. Morino, A. Morreale, D. P. Morrison, T. V. Moukhanova, D. Mukhopadhyay, B. Mulilo, T. Murakami, J. Murata, A. Mwai, S. Nagamiya, K. Nagashima, J. L. Nagle, M. Naglis, M. I. Nagy, I. Nakagawa, H. Nakagomi, Y. Nakamiya, T. Nakamura, K. Nakano, C. Nattrass, P. K. Netrakanti, J. Newby, M. Nguyen, T. Niida, S. Nishimura, R. Nouicer, N. Novitzky, T. Novák, G. Nukazuka, A. S. Nyanin, E. O'Brien, S. X. Oda, C. A. Ogilvie, K. Okada, M. Oka, Y. Onuki, J. D. Orjuela Koop, M. Orosz, J. D. Osborn, A. Oskarsson, M. Ouchida, K. Ozawa, R. Pak, A. P. T. Palounek, V. Pantuev, V. Papavassiliou, J. Park, J. S. Park, S. Park, W. J. Park, M. Patel, S. F. Pate, H. Pei, J. -C. Peng, H. Pereira, D. V. Perepelitsa, G. D. N. Perera, V. Peresedov, D. Yu. Peressounko, J. Perry, R. Petti, C. Pinkenburg, R. Pinson, R. P. Pisani, M. Potekhin, M. L. Purschke, A. K. Purwar, H. Qu, A. Rakotozafindrabe, J. Rak, B. J. Ramson, I. Ravinovich, K. F. Read, S. Rembeczki, K. Reygers, D. Reynolds, V. Riabov, Y. Riabov, D. Richford, T. Rinn, D. Roach, G. Roche, S. D. Rolnick, M. Rosati, S. S. E. Rosendahl, P. Rosnet, Z. Rowan, J. G. Rubin, P. Rukoyatkin, P. Ružička, V. L. Rykov, B. Sahlmueller, N. Saito, T. Sakaguchi, S. Sakai, K. Sakashita, H. Sako, V. Samsonov, M. Sarsour, S. Sato, T. Sato, S. Sawada, B. Schaefer, B. K. Schmoll, K. Sedgwick, J. Seele, R. Seidl, A. Yu. Semenov, V. Semenov, A. Sen, R. Seto, P. Sett, A. Sexton, D. Sharma, I. Shein, T. -A. Shibata, K. Shigaki, M. Shimomura, K. Shoji, P. Shukla, A. Sickles, C. L. Silva, D. Silvermyr, C. Silvestre, K. S. Sim, B. K. Singh, C. P. Singh, C. P. Singh, V. Singh, M. Slunečka, K. L. Smith, M. Snowball, A. Soldatov, R. A. Soltz, W. E. Sondheim, S. P. Sorensen, I. V. Sourikova, F. Staley, P. W. Stankus, E. Stenlund, M. Stepanov, A. Ster, S. P. Stoll, T. Sugitate, C. Suire, A. Sukhanov, T. Sumita, J. Sun, Z. Sun, J. Sziklai, E. M. Takagui, A. Taketani, R. Tanabe, Y. Tanaka, K. Tanida, M. J. Tannenbaum, S. Tarafdar, A. Taranenko, P. Tarján, H. Themann, T. L. Thomas, R. Tieulent, A. Timilsina, T. Todoroki, M. Togawa, A. Toia, Y. Tomita, L. Tomášek, M. Tomášek, H. Torii, C. L. Towell, R. Towell, R. S. Towell, V-N. Tram, I. Tserruya, Y. Tsuchimoto, B. Ujvari, C. Vale, H. Valle, H. W. van Hecke, A. Veicht, J. Velkovska, A. A. Vinogradov, M. Virius, V. Vrba, E. Vznuzdaev, R. Vértesi, X. R. Wang, Y. Watanabe, Y. S. Watanabe, F. Wei, J. Wessels, A. S. White, S. N. White, D. Winter, C. L. Woody, M. Wysocki, B. Xia, W. Xie, L. Xue, S. Yalcin, Y. L. Yamaguchi, K. Yamaura, R. Yang, A. Yanovich, J. Ying, S. Yokkaichi, I. Yoon, J. H. Yoo, G. R. Young, I. Younus, I. E. Yushmanov, H. Yu, W. A. Zajc, O. Zaudtke, A. Zelenski, C. Zhang, S. Zhou, L. Zolin, L. Zou
High-momentum two-particle correlations are a useful tool for studying jet-quenching effects in the quark-gluon plasma. Angular correlations between neutral-pion triggers and charged hadrons with transverse momenta in the range 4--12~GeV/$c$ and 0.5--7~GeV/$c$, respectively, have been measured by the PHENIX experiment in 2014 for Au$+$Au collisions at $sqrt{s_{_{NN}}}=200$~GeV. Suppression is observed in the yield of high-momentum jet fragments opposite the trigger particle, which indicates jet suppression stemming from in-medium partonic energy loss, while enhancement is observed for low-momentum particles. The ratio and differences between the yield in Au$+$Au collisions and $p$$+$$p$ collisions, $I_{AA}$ and $Delta_{AA}$, as a function of the trigger-hadron azimuthal separation, $Deltaphi$, are measured for the first time at the Relativistic Heavy Ion Collider. These results better quantify how the yield of low-$p_T$ associated hadrons is enhanced at wide angle, which is crucial for studying energy loss as well as medium-response effects.
{"title":"Jet modification via $π^0$-hadron correlations in Au$+$Au collisions at $sqrt{s_{_{NN}}}=200$ GeV","authors":"PHENIX Collaboration, N. J. Abdulameer, U. Acharya, A. Adare, S. Afanasiev, C. Aidala, N. N. Ajitanand, Y. Akiba, H. Al-Bataineh, J. Alexander, M. Alfred, K. Aoki, N. Apadula, L. Aphecetche, J. Asai, H. Asano, E. T. Atomssa, R. Averbeck, T. C. Awes, B. Azmoun, V. Babintsev, M. Bai, G. Baksay, L. Baksay, A. Baldisseri, N. S. Bandara, B. Bannier, K. N. Barish, P. D. Barnes, B. Bassalleck, A. T. Basye, S. Bathe, S. Batsouli, V. Baublis, C. Baumann, A. Bazilevsky, M. Beaumier, S. Beckman, S. Belikov, R. Belmont, R. Bennett, A. Berdnikov, Y. Berdnikov, L. Bichon, A. A. Bickley, B. Blankenship, D. S. Blau, J. G. Boissevain, J. S. Bok, H. Borel, V. Borisov, K. Boyle, M. L. Brooks, J. Bryslawskyj, H. Buesching, V. Bumazhnov, G. Bunce, S. Butsyk, C. M. Camacho, S. Campbell, B. S. Chang, W. C. Chang, J. L. Charvet, C. -H. Chen, D. Chen, S. Chernichenko, M. Chiu, C. Y. Chi, I. J. Choi, J. B. Choi, R. K. Choudhury, T. Chujo, P. Chung, A. Churyn, V. Cianciolo, Z. Citron, B. A. Cole, M. Connors, P. Constantin, R. Corliss, M. Csanád, T. Csörgő, D. d'Enterria, T. Dahms, S. Dairaku, T. W. Danley, K. Das, A. Datta, M. S. Daugherity, G. David, K. DeBlasio, K. Dehmelt, A. Denisov, A. Deshpande, E. J. Desmond, O. Dietzsch, A. Dion, P. B. Diss, M. Donadelli, V. Doomra, J. H. Do, O. Drapier, A. Drees, K. A. Drees, A. K. Dubey, J. M. Durham, A. Durum, D. Dutta, V. Dzhordzhadze, Y. V. Efremenko, F. Ellinghaus, H. En'yo, T. Engelmore, A. Enokizono, R. Esha, K. O. Eyser, B. Fadem, N. Feege, D. E. Fields, M. Finger, Jr., M. Finger, D. Firak, D. Fitzgerald, F. Fleuret, S. L. Fokin, Z. Fraenkel, J. E. Frantz, A. Franz, A. D. Frawley, K. Fujiwara, Y. Fukao, T. Fusayasu, P. Gallus, C. Gal, P. Garg, I. Garishvili, H. Ge, F. Giordano, A. Glenn, H. Gong, M. Gonin, J. Gosset, Y. Goto, R. Granier de Cassagnac, N. Grau, S. V. Greene, M. Grosse Perdekamp, T. Gunji, T. Guo, H. -Å. Gustafsson, T. Hachiya, A. Hadj Henni, J. S. Haggerty, K. I. Hahn, H. Hamagaki, H. F. Hamilton, J. Hanks, R. Han, S. Y. Han, E. P. Hartouni, K. Haruna, S. Hasegawa, T. O. S. Haseler, K. Hashimoto, E. Haslum, R. Hayano, M. Heffner, T. K. Hemmick, T. Hester, X. He, J. C. Hill, A. Hodges, M. Hohlmann, R. S. Hollis, W. Holzmann, K. Homma, B. Hong, T. Horaguchi, D. Hornback, T. Hoshino, N. Hotvedt, J. Huang, T. Ichihara, R. Ichimiya, H. Iinuma, Y. Ikeda, K. Imai, J. Imrek, M. Inaba, A. Iordanova, D. Isenhower, M. Ishihara, T. Isobe, M. Issah, A. Isupov, D. Ivanishchev, B. V. Jacak, M. Jezghani, X. Jiang, J. Jin, Z. Ji, B. M. Johnson, K. S. Joo, D. Jouan, D. S. Jumper, F. Kajihara, S. Kametani, N. Kamihara, J. Kamin, S. Kanda, J. H. Kang, J. Kapustinsky, D. Kawall, A. V. Kazantsev, T. Kempel, J. A. Key, V. Khachatryan, A. Khanzadeev, K. M. Kijima, J. Kikuchi, B. Kimelman, B. I. Kim, C. Kim, D. H. Kim, D. J. Kim, E. Kim, E. -J. Kim, G. W. Kim, M. Kim, S. H. Kim, E. Kinney, K. Kiriluk, Á. Kiss, E. Kistenev, R. Kitamura, J. Klatsky, J. Klay, C. Klein-Boesing, D. Kleinjan, P. Kline, T. Koblesky, L. Kochenda, B. Komkov, M. Konno, J. Koster, D. Kotov, L. Kovacs, A. Kozlov, A. Kravitz, A. Král, G. J. Kunde, B. Kurgyis, K. Kurita, M. Kurosawa, M. J. Kweon, Y. Kwon, G. S. Kyle, Y. S. Lai, J. G. Lajoie, D. Layton, A. Lebedev, D. M. Lee, K. B. Lee, S. Lee, S. H. Lee, T. Lee, M. J. Leitch, M. A. L. Leite, B. Lenzi, P. Liebing, S. H. Lim, A. Litvinenko, H. Liu, M. X. Liu, T. Liška, X. Li, S. Lokos, D. A. Loomis, B. Love, D. Lynch, C. F. Maguire, Y. I. Makdisi, M. Makek, A. Malakhov, M. D. Malik, A. Manion, V. I. Manko, E. Mannel, Y. Mao, H. Masui, F. Matathias, L. Mašek, M. McCumber, P. L. McGaughey, D. McGlinchey, C. McKinney, N. Means, A. Meles, M. Mendoza, B. Meredith, Y. Miake, A. C. Mignerey, P. Mikeš, K. Miki, A. Milov, D. K. Mishra, M. Mishra, J. T. Mitchell, M. Mitrankova, Iu. Mitrankov, S. Miyasaka, S. Mizuno, A. K. Mohanty, P. Montuenga, T. Moon, Y. Morino, A. Morreale, D. P. Morrison, T. V. Moukhanova, D. Mukhopadhyay, B. Mulilo, T. Murakami, J. Murata, A. Mwai, S. Nagamiya, K. Nagashima, J. L. Nagle, M. Naglis, M. I. Nagy, I. Nakagawa, H. Nakagomi, Y. Nakamiya, T. Nakamura, K. Nakano, C. Nattrass, P. K. Netrakanti, J. Newby, M. Nguyen, T. Niida, S. Nishimura, R. Nouicer, N. Novitzky, T. Novák, G. Nukazuka, A. S. Nyanin, E. O'Brien, S. X. Oda, C. A. Ogilvie, K. Okada, M. Oka, Y. Onuki, J. D. Orjuela Koop, M. Orosz, J. D. Osborn, A. Oskarsson, M. Ouchida, K. Ozawa, R. Pak, A. P. T. Palounek, V. Pantuev, V. Papavassiliou, J. Park, J. S. Park, S. Park, W. J. Park, M. Patel, S. F. Pate, H. Pei, J. -C. Peng, H. Pereira, D. V. Perepelitsa, G. D. N. Perera, V. Peresedov, D. Yu. Peressounko, J. Perry, R. Petti, C. Pinkenburg, R. Pinson, R. P. Pisani, M. Potekhin, M. L. Purschke, A. K. Purwar, H. Qu, A. Rakotozafindrabe, J. Rak, B. J. Ramson, I. Ravinovich, K. F. Read, S. Rembeczki, K. Reygers, D. Reynolds, V. Riabov, Y. Riabov, D. Richford, T. Rinn, D. Roach, G. Roche, S. D. Rolnick, M. Rosati, S. S. E. Rosendahl, P. Rosnet, Z. Rowan, J. G. Rubin, P. Rukoyatkin, P. Ružička, V. L. Rykov, B. Sahlmueller, N. Saito, T. Sakaguchi, S. Sakai, K. Sakashita, H. Sako, V. Samsonov, M. Sarsour, S. Sato, T. Sato, S. Sawada, B. Schaefer, B. K. Schmoll, K. Sedgwick, J. Seele, R. Seidl, A. Yu. Semenov, V. Semenov, A. Sen, R. Seto, P. Sett, A. Sexton, D. Sharma, I. Shein, T. -A. Shibata, K. Shigaki, M. Shimomura, K. Shoji, P. Shukla, A. Sickles, C. L. Silva, D. Silvermyr, C. Silvestre, K. S. Sim, B. K. Singh, C. P. Singh, C. P. Singh, V. Singh, M. Slunečka, K. L. Smith, M. Snowball, A. Soldatov, R. A. Soltz, W. E. Sondheim, S. P. Sorensen, I. V. Sourikova, F. Staley, P. W. Stankus, E. Stenlund, M. Stepanov, A. Ster, S. P. Stoll, T. Sugitate, C. Suire, A. Sukhanov, T. Sumita, J. Sun, Z. Sun, J. Sziklai, E. M. Takagui, A. Taketani, R. Tanabe, Y. Tanaka, K. Tanida, M. J. Tannenbaum, S. Tarafdar, A. Taranenko, P. Tarján, H. Themann, T. L. Thomas, R. Tieulent, A. Timilsina, T. Todoroki, M. Togawa, A. Toia, Y. Tomita, L. Tomášek, M. Tomášek, H. Torii, C. L. Towell, R. Towell, R. S. Towell, V-N. Tram, I. Tserruya, Y. Tsuchimoto, B. Ujvari, C. Vale, H. Valle, H. W. van Hecke, A. Veicht, J. Velkovska, A. A. Vinogradov, M. Virius, V. Vrba, E. Vznuzdaev, R. Vértesi, X. R. Wang, Y. Watanabe, Y. S. Watanabe, F. Wei, J. Wessels, A. S. White, S. N. White, D. Winter, C. L. Woody, M. Wysocki, B. Xia, W. Xie, L. Xue, S. Yalcin, Y. L. Yamaguchi, K. Yamaura, R. Yang, A. Yanovich, J. Ying, S. Yokkaichi, I. Yoon, J. H. Yoo, G. R. Young, I. Younus, I. E. Yushmanov, H. Yu, W. A. Zajc, O. Zaudtke, A. Zelenski, C. Zhang, S. Zhou, L. Zolin, L. Zou","doi":"arxiv-2406.08301","DOIUrl":"https://doi.org/arxiv-2406.08301","url":null,"abstract":"High-momentum two-particle correlations are a useful tool for studying\u0000jet-quenching effects in the quark-gluon plasma. Angular correlations between\u0000neutral-pion triggers and charged hadrons with transverse momenta in the range\u00004--12~GeV/$c$ and 0.5--7~GeV/$c$, respectively, have been measured by the\u0000PHENIX experiment in 2014 for Au$+$Au collisions at $sqrt{s_{_{NN}}}=200$~GeV.\u0000Suppression is observed in the yield of high-momentum jet fragments opposite\u0000the trigger particle, which indicates jet suppression stemming from in-medium\u0000partonic energy loss, while enhancement is observed for low-momentum particles.\u0000The ratio and differences between the yield in Au$+$Au collisions and $p$$+$$p$\u0000collisions, $I_{AA}$ and $Delta_{AA}$, as a function of the trigger-hadron\u0000azimuthal separation, $Deltaphi$, are measured for the first time at the\u0000Relativistic Heavy Ion Collider. These results better quantify how the yield of\u0000low-$p_T$ associated hadrons is enhanced at wide angle, which is crucial for\u0000studying energy loss as well as medium-response effects.","PeriodicalId":501206,"journal":{"name":"arXiv - PHYS - Nuclear Experiment","volume":"135 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-06-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141521035","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Experiments conducted in the last decade to search for the Chiral Magnetic Effect (CME) in heavy-ion collisions have been inconclusive. The Isobar program at RHIC was undertaken to address this problem. Also, a new approach known as the Sliding Dumbbell Method (SDM) has been developed to study the CME. This method searches for the back-to-back charge separation on an event-by-event basis.
{"title":"Search for the Chiral Magnetic Effect using Sliding Dumbbell Method in Isobar Collisions ($^{96}_{44}Ru$+$^{96}_{44}Ru$ and $^{96}_{40}Zr$+$^{96}_{40}Zr$) at RHIC","authors":"Jagbir Singh","doi":"arxiv-2406.06503","DOIUrl":"https://doi.org/arxiv-2406.06503","url":null,"abstract":"Experiments conducted in the last decade to search for the Chiral Magnetic\u0000Effect (CME) in heavy-ion collisions have been inconclusive. The Isobar program\u0000at RHIC was undertaken to address this problem. Also, a new approach known as\u0000the Sliding Dumbbell Method (SDM) has been developed to study the CME. This\u0000method searches for the back-to-back charge separation on an event-by-event\u0000basis.","PeriodicalId":501206,"journal":{"name":"arXiv - PHYS - Nuclear Experiment","volume":"161 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-06-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141507888","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
D. Kostyleva, X. -D. Xu, I. Mukha, L. Acosta, M. Bajzek, E. Casarejos, A. A. Ciemny, D. Cortina-Gil, W. Dominik, J. A. Dueñas, J. M. Espino, A. Estradé, F. Farinon, A. Fomichev, H. Geissel, J. Gómez-Camacho, A. Gorshkov, L. V. Grigorenko, Z. Janas, G. Kamiński, O. Kiselev, R. Knöbel, A. A. Korsheninnikov, S. Krupko, M. Kuich, N. Kurz, Yu. A. Litvinov, G. Marquinez-Durán, I. Martel, C. Mazzocchi, E. Yu. Nikolskii, C. Nociforo, A. K. Ordúz, M. Pfützner, S. Pietri, M. Pomorski, A. Prochazka, C. Rodríguez-Tajes, S. Rymzhanova, A. M. Sánchez-Benítez, C. Scheidenberger, H. Simon, B. Sitar, R. Slepnev, M. Stanoiu, P. Strmen, K. Sümmerer, I. Szarka, M. Takechi, Y. K. Tanaka, H. Weick, J. S. Winfield, P. J. Woods, M. V. Zhukov
We report on the observation of previously-unknown isotope $^{21}$Al, the first unbound aluminum isotope located beyond the proton dripline. The $^{21}$Al nucleus decays by one-proton (1p) emission, and its in-flight decays were detected by tracking trajectories of all decay products with micro-strip silicon detectors. The 1p-emission processes were studied by analyses of the measured angular correlations of decay products $^{20}$Mg+p. The 1p-decay energies of ground and low-lying excited states of $^{21}$Al, its mass excess and proton separation energy value $S_p$=$-1.1(1)$ MeV were determined.
{"title":"Observation and spectroscopy of proton-unbound nucleus $^{21}$Al","authors":"D. Kostyleva, X. -D. Xu, I. Mukha, L. Acosta, M. Bajzek, E. Casarejos, A. A. Ciemny, D. Cortina-Gil, W. Dominik, J. A. Dueñas, J. M. Espino, A. Estradé, F. Farinon, A. Fomichev, H. Geissel, J. Gómez-Camacho, A. Gorshkov, L. V. Grigorenko, Z. Janas, G. Kamiński, O. Kiselev, R. Knöbel, A. A. Korsheninnikov, S. Krupko, M. Kuich, N. Kurz, Yu. A. Litvinov, G. Marquinez-Durán, I. Martel, C. Mazzocchi, E. Yu. Nikolskii, C. Nociforo, A. K. Ordúz, M. Pfützner, S. Pietri, M. Pomorski, A. Prochazka, C. Rodríguez-Tajes, S. Rymzhanova, A. M. Sánchez-Benítez, C. Scheidenberger, H. Simon, B. Sitar, R. Slepnev, M. Stanoiu, P. Strmen, K. Sümmerer, I. Szarka, M. Takechi, Y. K. Tanaka, H. Weick, J. S. Winfield, P. J. Woods, M. V. Zhukov","doi":"arxiv-2406.04771","DOIUrl":"https://doi.org/arxiv-2406.04771","url":null,"abstract":"We report on the observation of previously-unknown isotope $^{21}$Al, the\u0000first unbound aluminum isotope located beyond the proton dripline. The\u0000$^{21}$Al nucleus decays by one-proton (1p) emission, and its in-flight decays\u0000were detected by tracking trajectories of all decay products with micro-strip\u0000silicon detectors. The 1p-emission processes were studied by analyses of the\u0000measured angular correlations of decay products $^{20}$Mg+p. The 1p-decay\u0000energies of ground and low-lying excited states of $^{21}$Al, its mass excess\u0000and proton separation energy value $S_p$=$-1.1(1)$ MeV were determined.","PeriodicalId":501206,"journal":{"name":"arXiv - PHYS - Nuclear Experiment","volume":"20 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-06-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141507889","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Neutron stars in Low Mass X-ray Binaries (LMXBs) can accrete matter onto their surface from the companion star. Transiently accreting neutron stars go through alternating phases of active accretion outbursts and quiescence. X-ray observations during the quiescence phase show a drop in X-ray luminosity with the time in quiescence. This is also inferred as the drop in surface temperature or the cooling of accreting neutron stars in quiescence. Analyzing these cooling curves reveals a great deal of information about the structure and composition of neutron stars. However, model-observation comparisons of such cooling curves are challenging - partly due to observational uncertainties, and partly due to incomplete knowledge of heating mechanisms during accretion outbursts. This situation is further exacerbated by the recent discovery of Urca cooling in the neutron star crust. These are cycles that alternate between electron-capture and beta-decay to produce a large flux of neutrinos and anti-neutrinos. These freely stream out of the star and carry energy with them, essentially cooling the neutron star crust without changing the composition. As a result, it is necessary to accurately quantify the strength of Urca cooling to constrain the heat sources in neutron star crusts and facilitate better model-observation comparisons of the cooling curves.
低质量X射线双星（LMXB）中的中子星可以从伴星表面吸积物质。瞬态吸积中子星会经历活跃的吸积爆发和静止交替阶段。静止阶段的 X 射线观测显示，X 射线光度随着静止时间的延长而下降。这也被推断为表面温度的下降或增殖中子星在静止期的冷却。分析这些冷却曲线可以揭示有关中子星结构和组成的大量信息。然而，对这些冷却曲线进行模型-观测比较是一项挑战--部分原因是观测的不确定性，部分原因是对吸积爆发时的加热机制了解不全面。最近在中子星外壳中发现的乌卡冷却现象进一步加剧了这种状况。这些循环在电子捕获和β衰变之间交替进行，产生大量中微子和反中微子。这些中微子自由流出中子星，并携带能量，实质上冷却了中子星外壳，而不改变其成分。因此，有必要精确地量化乌卡冷却的强度，以限制中子星外壳的热源，并便于更好地对冷却曲线进行模型-观测比较。
{"title":"Nuclear Data to Quantify Urca Cooling in Accreting Neutron Stars","authors":"Rahul Jain","doi":"arxiv-2406.02634","DOIUrl":"https://doi.org/arxiv-2406.02634","url":null,"abstract":"Neutron stars in Low Mass X-ray Binaries (LMXBs) can accrete matter onto\u0000their surface from the companion star. Transiently accreting neutron stars go\u0000through alternating phases of active accretion outbursts and quiescence. X-ray\u0000observations during the quiescence phase show a drop in X-ray luminosity with\u0000the time in quiescence. This is also inferred as the drop in surface\u0000temperature or the cooling of accreting neutron stars in quiescence. Analyzing\u0000these cooling curves reveals a great deal of information about the structure\u0000and composition of neutron stars. However, model-observation comparisons of\u0000such cooling curves are challenging - partly due to observational\u0000uncertainties, and partly due to incomplete knowledge of heating mechanisms\u0000during accretion outbursts. This situation is further exacerbated by the recent\u0000discovery of Urca cooling in the neutron star crust. These are cycles that\u0000alternate between electron-capture and beta-decay to produce a large flux of\u0000neutrinos and anti-neutrinos. These freely stream out of the star and carry\u0000energy with them, essentially cooling the neutron star crust without changing\u0000the composition. As a result, it is necessary to accurately quantify the\u0000strength of Urca cooling to constrain the heat sources in neutron star crusts\u0000and facilitate better model-observation comparisons of the cooling curves.","PeriodicalId":501206,"journal":{"name":"arXiv - PHYS - Nuclear Experiment","volume":"237 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-06-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141521033","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
In the recent decades of high energy physics research, it was demonstrated that strongly interacting quark-gluon plasma (sQGP) is created in ultra-relativistic nucleus-nucleus collisions. Investigation and understanding of properties of the hadronic matter is among the important goals of NA61/SHINE collaboration at CERN SPS. Mapping of the phase diagram is achieved by varying the collision energy (5 GeV $
{"title":"Femtoscopy at NA61/SHINE using symmetric Lévy sources in central $^{40}$Ar+$^{45}$Sc from 40$A$ GeV/$c$ to 150$A$ GeV/$c$","authors":"Barnabas Porfyfor the NA61/SHINE Collaboration","doi":"arxiv-2406.02242","DOIUrl":"https://doi.org/arxiv-2406.02242","url":null,"abstract":"In the recent decades of high energy physics research, it was demonstrated\u0000that strongly interacting quark-gluon plasma (sQGP) is created in\u0000ultra-relativistic nucleus-nucleus collisions. Investigation and understanding\u0000of properties of the hadronic matter is among the important goals of NA61/SHINE\u0000collaboration at CERN SPS. Mapping of the phase diagram is achieved by varying\u0000the collision energy (5 GeV $<sqrt{s_{textrm{NN}}}<$17 GeV) and by changing\u0000the collision system (p+p, p+Pb, Be+Be, Ar+Sc, Xe+La, Pb+Pb). We report on the\u0000measurement of femtoscopic correlations in intermediate system at intermediate\u0000SPS energies. Interpreting the results of measurements within the symmetric\u0000L'evy source formalism, we discuss the values of L'evy source parameters as a\u0000function of average pair transverse mass. One of the physical parameters is\u0000particularly important, the L'evy exponent $alpha$, which describes the shape\u0000of the source and may be related to the critical exponent $eta$ in the\u0000proximity of the critical point. Therefore, measuring it may shed light on the\u0000location of the critical endpoint of the QCD phase diagram.","PeriodicalId":501206,"journal":{"name":"arXiv - PHYS - Nuclear Experiment","volume":"26 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-06-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141254609","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
E. O. Rosanowski, T. C. Jude, S. Alef, A. J. Clara Figueiredo, R. Di Salvo, D. Elsner, A. Fantini, O. Freyermuth, F. Frommberger, F. Ghio, J. Groß, K. Kohl, P. Levi Sandri, G. Mandaglio, R. Messi, D. Moricciani, P. Pedroni, B. -E. Reitz, M. Romaniuk, G. Scheluchin, H. Schmieden, A. Sonnenschein
The differential cross section for $gamma prightarrow K^+Lambda(1520)$ was measured from threshold to a centre-of-mass energy of 2090,MeV at forward angles at the BGOOD experiment. The high statistical precision and resolution in centre-of-mass energy and angle allows a detailed characterisation of this low-momentum transfer kinematic region. The data agree with a previous LEPS measurement and support effective Lagrangian models that indicate that the contact term dominates the cross section near threshold.
{"title":"$K^+Λ(1520)$ photoproduction at forward angles near threshold with the BGOOD experiment","authors":"E. O. Rosanowski, T. C. Jude, S. Alef, A. J. Clara Figueiredo, R. Di Salvo, D. Elsner, A. Fantini, O. Freyermuth, F. Frommberger, F. Ghio, J. Groß, K. Kohl, P. Levi Sandri, G. Mandaglio, R. Messi, D. Moricciani, P. Pedroni, B. -E. Reitz, M. Romaniuk, G. Scheluchin, H. Schmieden, A. Sonnenschein","doi":"arxiv-2406.01121","DOIUrl":"https://doi.org/arxiv-2406.01121","url":null,"abstract":"The differential cross section for $gamma prightarrow K^+Lambda(1520)$ was\u0000measured from threshold to a centre-of-mass energy of 2090,MeV at forward\u0000angles at the BGOOD experiment. The high statistical precision and resolution\u0000in centre-of-mass energy and angle allows a detailed characterisation of this\u0000low-momentum transfer kinematic region. The data agree with a previous LEPS\u0000measurement and support effective Lagrangian models that indicate that the\u0000contact term dominates the cross section near threshold.","PeriodicalId":501206,"journal":{"name":"arXiv - PHYS - Nuclear Experiment","volume":"5 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-06-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141254389","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
W. Paulsen, K. C. W. Li, S. Siem, V. W. Ingeberg, A. C. Larsen, T. K. Eriksen, H. C. Berg, M. M. Bjørøen, B. J. Coombes, J. T. H. Dowie, F. W. Furmyr, F. L. B. Garrote, D. Gjestvang, A. Görgen, T. Kibédi, M. Markova, V. Modamio, E. Sahin, A. E Stuchbery, G. M. Tveten, V. M. Valsdòttir
The radiative branching ratio of the Hoyle state is crucial to estimate the triple-$alpha$ reaction rate in stellar environments at medium temperatures. Knowledge of the $gamma$-decay channel is critical as this is the dominant radiative decay channel for the Hoyle state. A recent study by Kib'edi et al. [Phys. Rev. Lett. 125, 182701 (2020)] has challenged our understanding of this astrophysically significant branching ratio and its constraints. The objective of this work was to perform a new measurement of the $gamma$-decay branching ratio of the Hoyle state to deduce the radiative branching ratio of the Hoyle state. An additional objective was to independently verify aspects of the aforementioned measurement conducted by Kib'edi et al. For the main experiment of this work, the Hoyle state was populated by the $^{12}textrm{C}(p,p')$ reaction at 10.8 MeV at the Oslo Cyclotron Laboratory. The $gamma$-decay branching ratio was deduced through triple-coincidence events, each consisting of a proton ejectile corresponding to the Hoyle state, and the subsequent $gamma$-ray cascade. In the main experiment of this work, a $gamma$-decay branching ratio of the Hoyle state of $Gamma_{gamma}/Gamma=4.0(4)times 10^{-4}$ was determined, yielding a corresponding radiative branching ratio of $Gamma_{textrm{rad}}/Gamma=4.1(4) times 10^{-4}$, which is in agreement with several recent studies, as well as the previously adopted ENSDF average of $Gamma_{textrm{rad}}/Gamma=4.16(11)times 10^{-4}$. Aspects of the analysis performed by Kib'edi et al. were verified in this work and the source of discrepancy between the results of this work and that of Kib'edi et al. could not be determined. Further independent and innovative studies for the radiative width of the Hoyle state will substantiate whether the discrepant result by Kib'edi et al. should be excluded from future evaluations.
霍伊尔态的辐射支化比对于估算恒星环境中中等温度下的三（$alpha$）反应速率至关重要。Kib'edi 等人最近的一项研究[Phys. Rev. Lett. 125, 182701 (2020)]挑战了我们对这一具有重大物理意义的分支比及其约束条件的理解。这项工作的目的是对霍伊尔态的γ衰变分支进行新的测量，以推导出霍伊尔态的辐射分支比。在这项工作的主要实验中，霍伊尔态是由奥斯陆回旋加速器实验室在10.8MeV下的$^{12}textrm{C}(p,p')$反应填充的。伽马射线衰变率是通过三重共振事件推导出来的，每一个共振事件都包括与霍伊尔态相对应的质子抛射物以及随后的伽马射线级联。在这项工作的主要实验中，确定了霍伊尔态的$gamma$-decay支化比为$Gamma_{gamma}/Gamma=4.0(4)times10^{-4}$，得出了相应的辐射支化比为$Gamma_{textrm{rad}}/Gamma=4.0(4)times10^{-4}$。1(4) times 10^{-4}$，这与最近的几项研究以及之前采用的 ENSDF 平均值$Gamma_{textrm{rad}}/Gamma=4.16(11)times 10^{-4}$相一致。Kib'edi 等人所做分析的某些方面在这项工作中得到了验证，但无法确定这项工作的结果与 Kib'edi 等人的结果之间存在差异的原因。对霍伊尔态辐射宽度的进一步独立和创新研究将证实是否应在未来的评估中排除Kib'edi 等人的差异结果。
{"title":"Remeasuring the $γ$-decay branching ratio of the Hoyle state","authors":"W. Paulsen, K. C. W. Li, S. Siem, V. W. Ingeberg, A. C. Larsen, T. K. Eriksen, H. C. Berg, M. M. Bjørøen, B. J. Coombes, J. T. H. Dowie, F. W. Furmyr, F. L. B. Garrote, D. Gjestvang, A. Görgen, T. Kibédi, M. Markova, V. Modamio, E. Sahin, A. E Stuchbery, G. M. Tveten, V. M. Valsdòttir","doi":"arxiv-2406.00397","DOIUrl":"https://doi.org/arxiv-2406.00397","url":null,"abstract":"The radiative branching ratio of the Hoyle state is crucial to estimate the\u0000triple-$alpha$ reaction rate in stellar environments at medium temperatures.\u0000Knowledge of the $gamma$-decay channel is critical as this is the dominant\u0000radiative decay channel for the Hoyle state. A recent study by Kib'edi et al.\u0000[Phys. Rev. Lett. 125, 182701 (2020)] has challenged our understanding of this\u0000astrophysically significant branching ratio and its constraints. The objective\u0000of this work was to perform a new measurement of the $gamma$-decay branching\u0000ratio of the Hoyle state to deduce the radiative branching ratio of the Hoyle\u0000state. An additional objective was to independently verify aspects of the\u0000aforementioned measurement conducted by Kib'edi et al. For the main experiment\u0000of this work, the Hoyle state was populated by the $^{12}textrm{C}(p,p')$\u0000reaction at 10.8 MeV at the Oslo Cyclotron Laboratory. The $gamma$-decay\u0000branching ratio was deduced through triple-coincidence events, each consisting\u0000of a proton ejectile corresponding to the Hoyle state, and the subsequent\u0000$gamma$-ray cascade. In the main experiment of this work, a $gamma$-decay\u0000branching ratio of the Hoyle state of $Gamma_{gamma}/Gamma=4.0(4)times\u000010^{-4}$ was determined, yielding a corresponding radiative branching ratio of\u0000$Gamma_{textrm{rad}}/Gamma=4.1(4) times 10^{-4}$, which is in agreement\u0000with several recent studies, as well as the previously adopted ENSDF average of\u0000$Gamma_{textrm{rad}}/Gamma=4.16(11)times 10^{-4}$. Aspects of the analysis\u0000performed by Kib'edi et al. were verified in this work and the source of\u0000discrepancy between the results of this work and that of Kib'edi et al. could\u0000not be determined. Further independent and innovative studies for the radiative\u0000width of the Hoyle state will substantiate whether the discrepant result by\u0000Kib'edi et al. should be excluded from future evaluations.","PeriodicalId":501206,"journal":{"name":"arXiv - PHYS - Nuclear Experiment","volume":"33 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141259736","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The second phase of the RHIC Beam Energy Scan (BES-II) was conducted between 2019 and 2021. High statistics data was collected by the STAR experiment for Au+Au collisions at $sqrt{s_{NN}}$ from 7.7 to 27 GeV in collider mode and from 3 to 13.7 GeV in fixed target mode. A selection of results from the various BES-II analyses are presented here to showcase the wide range of physics accessible.
{"title":"Recent Highlights from STAR BES Phase II","authors":"Dylan Nefffor the STAR Collaboration","doi":"arxiv-2405.20928","DOIUrl":"https://doi.org/arxiv-2405.20928","url":null,"abstract":"The second phase of the RHIC Beam Energy Scan (BES-II) was conducted between\u00002019 and 2021. High statistics data was collected by the STAR experiment for\u0000Au+Au collisions at $sqrt{s_{NN}}$ from 7.7 to 27 GeV in collider mode and\u0000from 3 to 13.7 GeV in fixed target mode. A selection of results from the\u0000various BES-II analyses are presented here to showcase the wide range of\u0000physics accessible.","PeriodicalId":501206,"journal":{"name":"arXiv - PHYS - Nuclear Experiment","volume":"127 Suppl 4 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-05-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141254399","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The moments of proton and net-proton multiplicity distributions are observables expected to be sensitive to the QCD critical point and the nature of the QCD phase transition from QGP to hadron gas. Hyper-order cumulants are measured in wide centrality bins in STAR BES-I data and found to be qualitatively consistent with trends predicted by lattice QCD which finds a cross-over phase transition at low $mu_text{B}$. Data collected at $sqrt{s_{NN}}=3$ GeV in BES-II exhibit trends opposite of those observed in higher energy collisions which may suggest the dominance of hadronic interactions at this energy. The variance of proton multiplicity distributions in azimuthal partitions is measured to search for signals of clustering indicative of a first-order phase transition. A strong dependence on the event multiplicity is observed. This dependence is independent of energy in AMPT while in STAR data a significant trend with energy is observed.
{"title":"Probing the nature of the QCD phase transition with higher-order net-proton number fluctuation and local parton density fluctuation measurements at RHIC-STAR","authors":"Dylan Nefffor the STAR Collaboration","doi":"arxiv-2405.20929","DOIUrl":"https://doi.org/arxiv-2405.20929","url":null,"abstract":"The moments of proton and net-proton multiplicity distributions are\u0000observables expected to be sensitive to the QCD critical point and the nature\u0000of the QCD phase transition from QGP to hadron gas. Hyper-order cumulants are\u0000measured in wide centrality bins in STAR BES-I data and found to be\u0000qualitatively consistent with trends predicted by lattice QCD which finds a\u0000cross-over phase transition at low $mu_text{B}$. Data collected at\u0000$sqrt{s_{NN}}=3$ GeV in BES-II exhibit trends opposite of those observed in\u0000higher energy collisions which may suggest the dominance of hadronic\u0000interactions at this energy. The variance of proton multiplicity distributions\u0000in azimuthal partitions is measured to search for signals of clustering\u0000indicative of a first-order phase transition. A strong dependence on the event\u0000multiplicity is observed. This dependence is independent of energy in AMPT\u0000while in STAR data a significant trend with energy is observed.","PeriodicalId":501206,"journal":{"name":"arXiv - PHYS - Nuclear Experiment","volume":"20 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-05-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141254606","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The first measurement of $_{Lambda}^{3}mathrm{H}$ and $^3_ {overline{Lambda}}overline{mathrm{H}}$ differential production with respect to transverse momentum and centrality in Pb$-$Pb collisions at $sqrt{s_{mathrm{NN}}}=5.02$~TeV is presented. The $_{Lambda}^{3}mathrm{H}$ has been reconstructed via its two-charged-body decay channel, i.e., $_{Lambda}^{3}mathrm{H} rightarrow {}^{3}mathrm{He} + pi^{-}$. A Blast-Wave model fit of the $p_{rm T}$-differential spectra of all nuclear species measured by the ALICE collaboration suggests that the $_{Lambda}^{3}mathrm{H}$ kinetic freeze-out surface is consistent with that of other nuclei. The ratio between the integrated yields of $_{Lambda}^{3}mathrm{H}$ and $^3mathrm{He}$ is compared to predictions from the statistical hadronisation model and the coalescence model, with the latter being favoured by the presented measurements.
{"title":"Measurement of ${}_Λ^{3}mathrm{H}$ production in Pb-Pb collisions at $sqrt{s_{mathrm{NN}}}$ = 5.02 TeV","authors":"ALICE Collaboration","doi":"arxiv-2405.19839","DOIUrl":"https://doi.org/arxiv-2405.19839","url":null,"abstract":"The first measurement of $_{Lambda}^{3}mathrm{H}$ and $^3_\u0000{overline{Lambda}}overline{mathrm{H}}$ differential production with respect\u0000to transverse momentum and centrality in Pb$-$Pb collisions at\u0000$sqrt{s_{mathrm{NN}}}=5.02$~TeV is presented. The $_{Lambda}^{3}mathrm{H}$\u0000has been reconstructed via its two-charged-body decay channel, i.e.,\u0000$_{Lambda}^{3}mathrm{H} rightarrow {}^{3}mathrm{He} + pi^{-}$. A\u0000Blast-Wave model fit of the $p_{rm T}$-differential spectra of all nuclear\u0000species measured by the ALICE collaboration suggests that the\u0000$_{Lambda}^{3}mathrm{H}$ kinetic freeze-out surface is consistent with that\u0000of other nuclei. The ratio between the integrated yields of\u0000$_{Lambda}^{3}mathrm{H}$ and $^3mathrm{He}$ is compared to predictions from\u0000the statistical hadronisation model and the coalescence model, with the latter\u0000being favoured by the presented measurements.","PeriodicalId":501206,"journal":{"name":"arXiv - PHYS - Nuclear Experiment","volume":"13 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-05-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141191916","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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