We investigate the effects of the bottom-quark induced processes on the doubly polarized cross sections of $W^+W^-$ pair production at the LHC. The method to extract the on-shell single-top contribution is provided. Results for phenomenological and experimental analyses are given at next-to-leading order (NLO) QCD+EW accuracy, with the leading contribution from the gluon-gluon and photon-photon fusion included. We found that the contribution of the bottom-quark induced processes, after the subtraction of the on-shell $tW$ channel, is largest for the doubly longitudinal polarization, being at the level of $9%$ and $13%$ (compared to the NLO value of the light-quark contribution, for integrated cross section) for two cut setups, with and without a jet veto, respectively. A bound of the $tW$ interference is calculated for various kinematic distributions, showing that this interference effect is, in general, smaller for the no jet veto case.
{"title":"Polarized $W^+W^-$ pairs at the LHC: Effects from bottom-quark induced processes at NLO QCD+EW","authors":"Thi Nhung Dao, Duc Ninh Le","doi":"arxiv-2409.06396","DOIUrl":"https://doi.org/arxiv-2409.06396","url":null,"abstract":"We investigate the effects of the bottom-quark induced processes on the\u0000doubly polarized cross sections of $W^+W^-$ pair production at the LHC. The\u0000method to extract the on-shell single-top contribution is provided. Results for\u0000phenomenological and experimental analyses are given at next-to-leading order\u0000(NLO) QCD+EW accuracy, with the leading contribution from the gluon-gluon and\u0000photon-photon fusion included. We found that the contribution of the\u0000bottom-quark induced processes, after the subtraction of the on-shell $tW$\u0000channel, is largest for the doubly longitudinal polarization, being at the\u0000level of $9%$ and $13%$ (compared to the NLO value of the light-quark\u0000contribution, for integrated cross section) for two cut setups, with and\u0000without a jet veto, respectively. A bound of the $tW$ interference is\u0000calculated for various kinematic distributions, showing that this interference\u0000effect is, in general, smaller for the no jet veto case.","PeriodicalId":501067,"journal":{"name":"arXiv - PHYS - High Energy Physics - Phenomenology","volume":"40 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142223575","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}
Valerie Domcke, Sebastian A. R. Ellis, Joachim Kopp
We argue that dielectric haloscopes like MADMAX, originally designed for detecting axion dark matter, are also very promising gravitational wave detectors. Operated in resonant mode at frequencies around $mathcal{O}(10,text{GHz})$, these detectors benefit from enhanced gravitational wave to photon conversion at the surfaces of a stack of thin dielectric disks. Since the gravitational wave is relativistic, there is an additional enhancement of the signal compared to the axion case due to increased conversion probability of gravitational waves to photons in the vacuum between the disks. A gravitational wave search using a dielectric haloscope imposes stringent requirements on the disk thickness and placement, but relaxed requirements on the disk smoothness. An advantage is the possibility of a broadband or hybrid resonant/broadband operation mode, which extends the frequency range down to $mathcal{O}(100,text{MHz})$. We show that strain sensitivities down to $10^{-21} text{Hz}^{-1/2} times (10,text{GHz}/f)$ will be possible in the coming years for the broadband setup, while a resonant setup optimized for gravitational waves could even reach $3times 10^{-23} text{Hz}^{-1/2} times (10,text{GHz}/f)$ with current technology.
{"title":"Dielectric Haloscopes as Gravitational Wave Detectors","authors":"Valerie Domcke, Sebastian A. R. Ellis, Joachim Kopp","doi":"arxiv-2409.06462","DOIUrl":"https://doi.org/arxiv-2409.06462","url":null,"abstract":"We argue that dielectric haloscopes like MADMAX, originally designed for\u0000detecting axion dark matter, are also very promising gravitational wave\u0000detectors. Operated in resonant mode at frequencies around\u0000$mathcal{O}(10,text{GHz})$, these detectors benefit from enhanced\u0000gravitational wave to photon conversion at the surfaces of a stack of thin\u0000dielectric disks. Since the gravitational wave is relativistic, there is an\u0000additional enhancement of the signal compared to the axion case due to\u0000increased conversion probability of gravitational waves to photons in the\u0000vacuum between the disks. A gravitational wave search using a dielectric\u0000haloscope imposes stringent requirements on the disk thickness and placement,\u0000but relaxed requirements on the disk smoothness. An advantage is the\u0000possibility of a broadband or hybrid resonant/broadband operation mode, which\u0000extends the frequency range down to $mathcal{O}(100,text{MHz})$. We show\u0000that strain sensitivities down to $10^{-21} text{Hz}^{-1/2} times\u0000(10,text{GHz}/f)$ will be possible in the coming years for the broadband\u0000setup, while a resonant setup optimized for gravitational waves could even\u0000reach $3times 10^{-23} text{Hz}^{-1/2} times (10,text{GHz}/f)$ with\u0000current technology.","PeriodicalId":501067,"journal":{"name":"arXiv - PHYS - High Energy Physics - Phenomenology","volume":"108 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142178515","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}
Duong Van Loi, N. T. Duy, Cao H. Nam, Phung Van Dong
Assuming fundamental fermions possess a new Abelian gauge charge that depends on flavors of both quark and lepton, we obtain a simple extension of the Standard Model, which reveals some new physics insights. The new gauge charge anomaly cancellation not only explains the existence of just three fermion generations as observed but also requires the presence of a unique right-handed neutrino $nu_R$ with a non-zero new gauge charge. Further, the new gauge charge breaking supplies a residual matter parity, under which the fundamental fermions and $nu_R$ are even, whereas a right-handed neutrino $N_R$ without the new charge is odd. Consequently, light neutrino masses in our model are generated from the tree-level type-I seesaw mechanism induced by $nu_R$ and from the one-loop scotogenic contribution accommodated by potential dark matter candidates, $N_R$ and dark scalars, odd under the matter parity. We examine new physics phenomena related to the additional gauge boson, which could be observed at colliders. We analyze the constraints imposed on our model by current experimental limits on neutrino masses, neutral meson oscillations, $B$-meson decays, and charged lepton flavor violating processes. We also investigate the potential dark matter candidates by considering relic density and direct detection.
{"title":"Scoto-seesaw model implied by flavor-dependent Abelian gauge charge","authors":"Duong Van Loi, N. T. Duy, Cao H. Nam, Phung Van Dong","doi":"arxiv-2409.06393","DOIUrl":"https://doi.org/arxiv-2409.06393","url":null,"abstract":"Assuming fundamental fermions possess a new Abelian gauge charge that depends\u0000on flavors of both quark and lepton, we obtain a simple extension of the\u0000Standard Model, which reveals some new physics insights. The new gauge charge\u0000anomaly cancellation not only explains the existence of just three fermion\u0000generations as observed but also requires the presence of a unique right-handed\u0000neutrino $nu_R$ with a non-zero new gauge charge. Further, the new gauge\u0000charge breaking supplies a residual matter parity, under which the fundamental\u0000fermions and $nu_R$ are even, whereas a right-handed neutrino $N_R$ without\u0000the new charge is odd. Consequently, light neutrino masses in our model are\u0000generated from the tree-level type-I seesaw mechanism induced by $nu_R$ and\u0000from the one-loop scotogenic contribution accommodated by potential dark matter\u0000candidates, $N_R$ and dark scalars, odd under the matter parity. We examine new\u0000physics phenomena related to the additional gauge boson, which could be\u0000observed at colliders. We analyze the constraints imposed on our model by\u0000current experimental limits on neutrino masses, neutral meson oscillations,\u0000$B$-meson decays, and charged lepton flavor violating processes. We also\u0000investigate the potential dark matter candidates by considering relic density\u0000and direct detection.","PeriodicalId":501067,"journal":{"name":"arXiv - PHYS - High Energy Physics - Phenomenology","volume":"108 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142178544","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}
Finn Feuerstake, Elina Fuchs, Tania Robens, Daniel Winterbottom
Interference effects are well founded from the quantum mechanical viewpoint and in principle cannot be ignored in realistic studies of New Physics scenarios. In this work, we investigate the size of interference effects between resonant and non-resonant contributions to di-Higgs production in the singlet extension of the Standard Model where the additional heavy scalar provides a resonant channel of on-shell and off-shell di-Higgs production. We find these interference contributions to have a non-negligible effect on the cross-sections and differential distributions. In order to allow for an computationally efficient treatment of these effects via reweighting, we introduce a new tool utilizing a matrix-element reweighting method: HHReweighter. In addition to the broadly used invariant di-Higgs mass $m_{hh}$, we analyze the sensitivity of other kinematic variables to the interference term and propose to also use differential distributions in the Higgs transverse momentum $p_T^h$. Furthermore, we provide updates on the latest experimental and theoretical limits on the parameter space of the real singlet extension of the Standard Model Higgs sector.
{"title":"Interference effects in resonant di-Higgs production at the LHC in the Higgs singlet extension","authors":"Finn Feuerstake, Elina Fuchs, Tania Robens, Daniel Winterbottom","doi":"arxiv-2409.06651","DOIUrl":"https://doi.org/arxiv-2409.06651","url":null,"abstract":"Interference effects are well founded from the quantum mechanical viewpoint\u0000and in principle cannot be ignored in realistic studies of New Physics\u0000scenarios. In this work, we investigate the size of interference effects\u0000between resonant and non-resonant contributions to di-Higgs production in the\u0000singlet extension of the Standard Model where the additional heavy scalar\u0000provides a resonant channel of on-shell and off-shell di-Higgs production. We\u0000find these interference contributions to have a non-negligible effect on the\u0000cross-sections and differential distributions. In order to allow for an\u0000computationally efficient treatment of these effects via reweighting, we\u0000introduce a new tool utilizing a matrix-element reweighting method:\u0000HHReweighter. In addition to the broadly used invariant di-Higgs mass $m_{hh}$,\u0000we analyze the sensitivity of other kinematic variables to the interference\u0000term and propose to also use differential distributions in the Higgs transverse\u0000momentum $p_T^h$. Furthermore, we provide updates on the latest experimental\u0000and theoretical limits on the parameter space of the real singlet extension of\u0000the Standard Model Higgs sector.","PeriodicalId":501067,"journal":{"name":"arXiv - PHYS - High Energy Physics - Phenomenology","volume":"108 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142178509","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}
Gravitational waves from cosmological phase transitions are novel probes of fundamental physics, making their precise calculation essential for revealing various mysteries of the early Universe. In this work we propose a framework that enables the consistent calculation of such gravitational waves sourced by sound waves. Starting from the Lagrangian, this framework integrates the calculation of the dynamics of first-order phase transitions in a self-consistent manner, eliminating various approximations typically introduced by conventional methods. At the heart of our approach is the congruous evaluation of the phase transition hydrodynamics that, at every step, is consistently informed by the Lagrangian. We demonstrate the application of our framework using the SM+$|H|^6$ model, deriving the corresponding gravitational wave spectrum. Our framework establishes a robust foundation for the precise prediction of gravitational waves from phase transitions.
{"title":"Self-consistent prediction of gravitational waves from cosmological phase transitions","authors":"Xiao Wang, Chi Tian, Csaba Balázs","doi":"arxiv-2409.06599","DOIUrl":"https://doi.org/arxiv-2409.06599","url":null,"abstract":"Gravitational waves from cosmological phase transitions are novel probes of\u0000fundamental physics, making their precise calculation essential for revealing\u0000various mysteries of the early Universe. In this work we propose a framework\u0000that enables the consistent calculation of such gravitational waves sourced by\u0000sound waves. Starting from the Lagrangian, this framework integrates the\u0000calculation of the dynamics of first-order phase transitions in a\u0000self-consistent manner, eliminating various approximations typically introduced\u0000by conventional methods. At the heart of our approach is the congruous\u0000evaluation of the phase transition hydrodynamics that, at every step, is\u0000consistently informed by the Lagrangian. We demonstrate the application of our\u0000framework using the SM+$|H|^6$ model, deriving the corresponding gravitational\u0000wave spectrum. Our framework establishes a robust foundation for the precise\u0000prediction of gravitational waves from phase transitions.","PeriodicalId":501067,"journal":{"name":"arXiv - PHYS - High Energy Physics - Phenomenology","volume":"10 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142178511","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}
Blaž Bortolato, Jernej F. Kamenik, Michele Tammaro
Measurements of Ultra-High Energy Cosmic Rays (UHECR) suggest a complex composition with significant contributions from heavy nuclei at the highest energies. We systematically explore how the selection and number of primary nuclei included in the analysis impact the inferred UHECR mass composition. Introducing a distance measure in the space of $X_{rm max}$ distribution moments, we demonstrate that limiting the analysis to a few primaries can introduce significant biases, particularly as observational data improves. We provide lists of primaries approximately equidistant in the new measure, which guaranty unbiased results at given statistical confidence. Additionally, we explore consistent inclusion of nuclei heavier than iron and up to plutonium, deriving first observational upper bounds on their contributions to UHECR with the Pierre Auger Open Data.
{"title":"Resolution of (Heavy) Primaries in Ultra High Energy Cosmic Rays","authors":"Blaž Bortolato, Jernej F. Kamenik, Michele Tammaro","doi":"arxiv-2409.06841","DOIUrl":"https://doi.org/arxiv-2409.06841","url":null,"abstract":"Measurements of Ultra-High Energy Cosmic Rays (UHECR) suggest a complex\u0000composition with significant contributions from heavy nuclei at the highest\u0000energies. We systematically explore how the selection and number of primary\u0000nuclei included in the analysis impact the inferred UHECR mass composition.\u0000Introducing a distance measure in the space of $X_{rm max}$ distribution\u0000moments, we demonstrate that limiting the analysis to a few primaries can\u0000introduce significant biases, particularly as observational data improves. We\u0000provide lists of primaries approximately equidistant in the new measure, which\u0000guaranty unbiased results at given statistical confidence. Additionally, we\u0000explore consistent inclusion of nuclei heavier than iron and up to plutonium,\u0000deriving first observational upper bounds on their contributions to UHECR with\u0000the Pierre Auger Open Data.","PeriodicalId":501067,"journal":{"name":"arXiv - PHYS - High Energy Physics - Phenomenology","volume":"3 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142178508","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}
Within a scotogenic neutrino mass model we explore the cogenesis of matter from the CP violating decay of a heavy $mathbb{Z}_2$-odd right handed neutrino that simultaneously populates the visible and a multipartite dark sector. The quantum of CP violation sets the baryon asymmetry in the visible sector driven by leptogenesis. The relic density of a sub-GeV scale freeze-in dark matter is generated by the late time decay of the next to lightest dark particle dynamically regulated by its interplay with the thermal scattering processes.
{"title":"Cogenesis of visible and dark matter in a scotogenic model","authors":"Debajit Bose, Rohan Pramanick, Tirtha Sankar Ray","doi":"arxiv-2409.06541","DOIUrl":"https://doi.org/arxiv-2409.06541","url":null,"abstract":"Within a scotogenic neutrino mass model we explore the cogenesis of matter\u0000from the CP violating decay of a heavy $mathbb{Z}_2$-odd right handed neutrino\u0000that simultaneously populates the visible and a multipartite dark sector. The\u0000quantum of CP violation sets the baryon asymmetry in the visible sector driven\u0000by leptogenesis. The relic density of a sub-GeV scale freeze-in dark matter is\u0000generated by the late time decay of the next to lightest dark particle\u0000dynamically regulated by its interplay with the thermal scattering processes.","PeriodicalId":501067,"journal":{"name":"arXiv - PHYS - High Energy Physics - Phenomenology","volume":"179 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142223508","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}
Models of a dark radiation sector with a mass threshold (WZDR+) have proved to be an appealing alternative to $Lambda$CDM. These models provide simple comparison models, grounded in well-understood particle physics and with limited additional parameters. In addition, they have shown relevance in easing existing cosmological tensions, specifically the $H_0$ tension and the $S_8$ tension. Recently, measurements of CMB lensing by the ACT collaboration have provided strong additional information on clustering at late times. Within $Lambda$CDM, these results yield a high value of $S_8$ at odds with weak-lensing measurements. In this work, we study this in the context of WZDR+, and find a much wider range of allowed values of $S_8$, and in particular much better agreement between data sets and an overall improvement of fit versus $Lambda$CDM. We expand our analyses to include a wide set of data, including the ACT-DR6 lensing data, as well as primary CMB information from ACT-DR4 and SPT-3G, scale-dependent power spectra from DES and measurements of $H_0$ from SH0ES. We find that there is little to no tension in measurements of structure within the data sets, and the inferred value of $S_8$ is generally lower than that in $Lambda$CDM. We find that the inclusion of DES generally favors a higher $H_0$, but there is some direct tension between the high-$ell$ multipole data and this result. Future data should clarify whether this is a statistical artifact, or a true incompatibility of these datasets within this model.
{"title":"Searching for Dark Matter Interactions with ACT, SPT and DES","authors":"Zilu Zhou, Neal Weiner","doi":"arxiv-2409.06771","DOIUrl":"https://doi.org/arxiv-2409.06771","url":null,"abstract":"Models of a dark radiation sector with a mass threshold (WZDR+) have proved\u0000to be an appealing alternative to $Lambda$CDM. These models provide simple\u0000comparison models, grounded in well-understood particle physics and with\u0000limited additional parameters. In addition, they have shown relevance in easing\u0000existing cosmological tensions, specifically the $H_0$ tension and the $S_8$\u0000tension. Recently, measurements of CMB lensing by the ACT collaboration have\u0000provided strong additional information on clustering at late times. Within\u0000$Lambda$CDM, these results yield a high value of $S_8$ at odds with\u0000weak-lensing measurements. In this work, we study this in the context of WZDR+,\u0000and find a much wider range of allowed values of $S_8$, and in particular much\u0000better agreement between data sets and an overall improvement of fit versus\u0000$Lambda$CDM. We expand our analyses to include a wide set of data, including\u0000the ACT-DR6 lensing data, as well as primary CMB information from ACT-DR4 and\u0000SPT-3G, scale-dependent power spectra from DES and measurements of $H_0$ from\u0000SH0ES. We find that there is little to no tension in measurements of structure\u0000within the data sets, and the inferred value of $S_8$ is generally lower than\u0000that in $Lambda$CDM. We find that the inclusion of DES generally favors a\u0000higher $H_0$, but there is some direct tension between the high-$ell$\u0000multipole data and this result. Future data should clarify whether this is a\u0000statistical artifact, or a true incompatibility of these datasets within this\u0000model.","PeriodicalId":501067,"journal":{"name":"arXiv - PHYS - High Energy Physics - Phenomenology","volume":"12 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142178513","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 this paper, we discuss the predicted proton lifetimes in minimal supersymmetric (SUSY) $SU(5)$ grand unified theory (GUT) with gauge mediated supersymmetry breaking (GMSB). We focus on the case of $mathbf{5} + mathbf{bar{5}}$ messengers and determine the low-scale mass spectrum of the scalar particles and gauginos using the renormalization group equations. With the obtained mass spectrum, we calculate the dominant proton decay mode for SUSY $SU(5)$ GUT, $p to K^+ bar{nu}$. In our setup, we assume the messenger scale to be $mathcal{O}(10^3)$ TeV in order to obtain a proper Higgs mass in GMSB scenario. For this messenger scale, we find the proton lifetime is consistent with current experimental limits and can be tested by future proton decay experiments.
在本文中，我们讨论了具有轨距介导超对称破缺（GMSB）的最小超对称（SUSY）$SU(5)$大统一理论（GUT）中质子寿命的预测。我们把重点放在 $mathbf{5} +mathbf{5} 的情况上。+mathbf{bar{5}}$信使，并利用重正化群方程确定尺度粒子和高弦子的低尺度质量谱。利用得到的质量谱，我们计算了SUSY $SU(5)$ GUT的主要质子衰变模式，即$p to K^+ bar{nu}$。在我们的设置中，我们假定信使尺度为$mathcal{O}(10^3)$ TeV，以便在GMSB方案中获得合适的希格斯质量。对于这个信使尺度，我们发现质子寿命与目前的实验极限是一致的，可以通过未来的质子蜕变实验来检验。
{"title":"Proton Lifetime in Minimal Supersymmetric SU(5) with Gauge Mediation","authors":"Jason L. Evans, Yoshihiro Shigekami","doi":"arxiv-2409.06239","DOIUrl":"https://doi.org/arxiv-2409.06239","url":null,"abstract":"In this paper, we discuss the predicted proton lifetimes in minimal\u0000supersymmetric (SUSY) $SU(5)$ grand unified theory (GUT) with gauge mediated\u0000supersymmetry breaking (GMSB). We focus on the case of $mathbf{5} +\u0000mathbf{bar{5}}$ messengers and determine the low-scale mass spectrum of the\u0000scalar particles and gauginos using the renormalization group equations. With\u0000the obtained mass spectrum, we calculate the dominant proton decay mode for\u0000SUSY $SU(5)$ GUT, $p to K^+ bar{nu}$. In our setup, we assume the messenger\u0000scale to be $mathcal{O}(10^3)$ TeV in order to obtain a proper Higgs mass in\u0000GMSB scenario. For this messenger scale, we find the proton lifetime is\u0000consistent with current experimental limits and can be tested by future proton\u0000decay experiments.","PeriodicalId":501067,"journal":{"name":"arXiv - PHYS - High Energy Physics - Phenomenology","volume":"386 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142178517","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}
Souvik Priyam Adhya, Krzysztof Kutak, Wieslaw Placzek, Martin Rohrmoser, Konrad Tywoniuk
In this work, we study for the first time jet-medium interactions in heavy-ion collisions with introduction of saturation and Sudakov effects with parameters tuned for upcoming forward calorimeter acceptances in experiments, in particular the ALICE FoCal detector. We focus on $gamma +$jet correlations by taking into account in-medium parton evolution using the BDIM equation that describes jet interactions with the quark-gluon plasma (QGP) combined with vacuum-like emissions (VLE). We systematically introduce the early time gluon saturation dynamics through the small-$x$ Improved Transverse Momentum Dependent factorization (ITMD). For our purpose, we use Monte Carlo programs KATIE and TMDICE to generate hard events and in-medium parton evolution, respectively. We present results of azimuthal correlations and nuclear modification ratios to gauge the impact of the gluon saturation effects at early time for the in-medium jet energy loss.
在这项工作中，我们首次研究了重离子对撞中的射流-介质相互作用，并引入了饱和效应和苏达科夫效应，其参数是根据即将进行的前向量热器接受实验，特别是 ALICE FoCal 探测器而调整的。我们利用描述喷流与夸克-胶子等离子体（QGP）相互作用的 BDIM 方程，结合类真空发射（VLE），考虑了中间粒子演化，重点研究了 $gamma +$jet 相关性。我们通过小-$x$改进横动量相关因式分解（ITMD）系统地引入了早期胶子饱和动力学。为此，我们使用蒙特卡洛程序KATIE和TMDICE分别生成硬事件和中子演化。我们给出了方位相关性和核调制比的结果，以衡量胶子饱和效应在中子喷流能量损失早期时间的影响。
{"title":"Predictions for photon-jet correlations at forward rapidities in heavy-ion collisions","authors":"Souvik Priyam Adhya, Krzysztof Kutak, Wieslaw Placzek, Martin Rohrmoser, Konrad Tywoniuk","doi":"arxiv-2409.06675","DOIUrl":"https://doi.org/arxiv-2409.06675","url":null,"abstract":"In this work, we study for the first time jet-medium interactions in\u0000heavy-ion collisions with introduction of saturation and Sudakov effects with\u0000parameters tuned for upcoming forward calorimeter acceptances in experiments,\u0000in particular the ALICE FoCal detector. We focus on $gamma +$jet correlations\u0000by taking into account in-medium parton evolution using the BDIM equation that\u0000describes jet interactions with the quark-gluon plasma (QGP) combined with\u0000vacuum-like emissions (VLE). We systematically introduce the early time gluon\u0000saturation dynamics through the small-$x$ Improved Transverse Momentum\u0000Dependent factorization (ITMD). For our purpose, we use Monte Carlo programs\u0000KATIE and TMDICE to generate hard events and in-medium parton evolution,\u0000respectively. We present results of azimuthal correlations and nuclear\u0000modification ratios to gauge the impact of the gluon saturation effects at\u0000early time for the in-medium jet energy loss.","PeriodicalId":501067,"journal":{"name":"arXiv - PHYS - High Energy Physics - Phenomenology","volume":"298 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142223507","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}
京公网安备 11010802042870号
京ICP备2023020795号-1
扫码关注我们
求助内容：
应助结果提醒方式：