Higgs boson pair production plays an important role in the determination of the Higgs boson self coupling. The predictions based on next-to-leading order corrections show a large dependence on the renormalization scheme of the top quark mass, which requires a next-to-next-to-leading order calculation. We discuss the current status and show first results of the three-loop virtual corrections.
{"title":"Towards NNLO QCD corrections to Higgs boson pair production","authors":"Matthias Steinhauser","doi":"arxiv-2409.07573","DOIUrl":"https://doi.org/arxiv-2409.07573","url":null,"abstract":"Higgs boson pair production plays an important role in the determination of\u0000the Higgs boson self coupling. The predictions based on next-to-leading order\u0000corrections show a large dependence on the renormalization scheme of the top\u0000quark mass, which requires a next-to-next-to-leading order calculation. We\u0000discuss the current status and show first results of the three-loop virtual\u0000corrections.","PeriodicalId":501067,"journal":{"name":"arXiv - PHYS - High Energy Physics - Phenomenology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142178538","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}
Pedro De la Torre Luque, Shyam Balaji, Joseph Silk
We demonstrate that the anomalous ionization rate observed in the Central Molecular Zone can be attributed to MeV dark matter annihilations into $e^+e^-$ pairs for galactic dark matter profiles with slopes $gamma>1$. The low annihilation cross-sections required avoid cosmological constraints and imply no detectable inverse Compton, bremsstrahlung or synchrotron emissions in radio, X and gamma rays. The possible connection to the source of the unexplained 511 keV line emission in the Galactic Center suggests that both observations could be correlated and have a common origin.
{"title":"Anomalous Ionization in the Central Molecular Zone by sub-GeV Dark Matter","authors":"Pedro De la Torre Luque, Shyam Balaji, Joseph Silk","doi":"arxiv-2409.07515","DOIUrl":"https://doi.org/arxiv-2409.07515","url":null,"abstract":"We demonstrate that the anomalous ionization rate observed in the Central\u0000Molecular Zone can be attributed to MeV dark matter annihilations into $e^+e^-$\u0000pairs for galactic dark matter profiles with slopes $gamma>1$. The low\u0000annihilation cross-sections required avoid cosmological constraints and imply\u0000no detectable inverse Compton, bremsstrahlung or synchrotron emissions in\u0000radio, X and gamma rays. The possible connection to the source of the\u0000unexplained 511 keV line emission in the Galactic Center suggests that both\u0000observations could be correlated and have a common origin.","PeriodicalId":501067,"journal":{"name":"arXiv - PHYS - High Energy Physics - Phenomenology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142178496","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}
We show that whenever independent events are binned, there is no correlation between bins. In particular, neither the uncertainty in the energy resolution nor a systematic error in the energy response of a detector will lead to a correlation between bins. This is in contrast with a result that recently appeared in the literature, where it was claimed that the finite energy resolution could induce correlation between bins, changing the distribution of $Deltachi^2$ when attempting to determine the neutrino mass ordering using reactor neutrinos. We will compute the expression for the variance of $Deltachi^2$ in the case of non-nested hypotheses if correlations between bins are present, showing that they could indeed affect the distribution. We will also show, however, that the detector response cannot introduce statistical correlations between bins unless these are already present in the original spectrum. Both of these results are valid in general: the absence of correlation is true for any detector response and the distribution of $Deltachi^2$ in the presence of (intrinsic) correlations, while obtained having the mass ordering in mind, it is true for any non-nested hypotheses.
{"title":"Finite Energy Resolution, Correlations Between Bins and Non-Nested Hypotheses","authors":"Emilio Ciuffoli, Jarah Evslin","doi":"arxiv-2409.07157","DOIUrl":"https://doi.org/arxiv-2409.07157","url":null,"abstract":"We show that whenever independent events are binned, there is no correlation\u0000between bins. In particular, neither the uncertainty in the energy resolution\u0000nor a systematic error in the energy response of a detector will lead to a\u0000correlation between bins. This is in contrast with a result that recently\u0000appeared in the literature, where it was claimed that the finite energy\u0000resolution could induce correlation between bins, changing the distribution of\u0000$Deltachi^2$ when attempting to determine the neutrino mass ordering using\u0000reactor neutrinos. We will compute the expression for the variance of\u0000$Deltachi^2$ in the case of non-nested hypotheses if correlations between\u0000bins are present, showing that they could indeed affect the distribution. We\u0000will also show, however, that the detector response cannot introduce\u0000statistical correlations between bins unless these are already present in the\u0000original spectrum. Both of these results are valid in general: the absence of\u0000correlation is true for any detector response and the distribution of\u0000$Deltachi^2$ in the presence of (intrinsic) correlations, while obtained\u0000having the mass ordering in mind, it is true for any non-nested hypotheses.","PeriodicalId":501067,"journal":{"name":"arXiv - PHYS - High Energy Physics - Phenomenology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142178504","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}
Just like other heavy flavor mesons, the weak decays of $D^*_{(s)}$ mesons can also provide a platform to check the Standard Model (SM), explore new physics (NP) and understand the mechanisms of weak interactions. At present, the theoretical and experimental researches on $D^*_{(s)}$ mesons are relatively limited. In addition to the dominant electromagnetic decays, the $D^*_{(s)}$ weak decays should also be feasible to explore the $D^*_{(s)}$ mesons. In this paper, we use the covariant light-front quark model (CLFQM) to study the branching ratios of the semi-leptonic decays $D^*_{(s)}to Pell^{+}nu_{ell}$ and the non-leptonic decays $D^*_{(s)}to PP, PV$ with $P=pi, K, eta^{(prime)}, V=rho, K^*, phi$ and $ell=e, mu$, which are within the range $10^{-13}sim 10^{-6}$. Among these decays, the channels $D_{s}^{*+}toeta ell^{+}nu_{ell}$ and $D^{*+}_{s}to etarho^{+}$ possess the largest branching ratios, which can reach up to $10^{-6}$ order. These decays are most likely to be accessible at the future high-luminosity experiments. One can find that the branching ratios $mathcal{B}r(D_{s}^{*+}toeta ell^{+}nu_{ell})=1.46times10^{-6}$ and $mathcal{B}r(D_{s}^{*+}toeta rho^{+})=1.04times10^{-6}$ correspond to tens of thousands of events in the $e^+e^-$ collider experiments, such as the STCF, CEPC and FCC-ee, and tens of millions of events at the HL-LHC. In a word, it is feasible to study the $D^*_{(s)}$ meson weak decays in the future experiments. Furthermore, we also predict and discuss another two physical observations, that is, the longitudinal polarization fraction $f_{L}$ and the forward-backward asymmetry $A_{FB}$, for our considered decays.
{"title":"Possibility of the experimental study on semi-leptonic and non-leptonic $D^*_{(s)}$ weak decays","authors":"Hao Yang, Zhi-Qing Zhang, Peng Li, You-Ya Yang","doi":"arxiv-2409.07302","DOIUrl":"https://doi.org/arxiv-2409.07302","url":null,"abstract":"Just like other heavy flavor mesons, the weak decays of $D^*_{(s)}$ mesons\u0000can also provide a platform to check the Standard Model (SM), explore new\u0000physics (NP) and understand the mechanisms of weak interactions. At present,\u0000the theoretical and experimental researches on $D^*_{(s)}$ mesons are\u0000relatively limited. In addition to the dominant electromagnetic decays, the\u0000$D^*_{(s)}$ weak decays should also be feasible to explore the $D^*_{(s)}$\u0000mesons. In this paper, we use the covariant light-front quark model (CLFQM) to\u0000study the branching ratios of the semi-leptonic decays $D^*_{(s)}to\u0000Pell^{+}nu_{ell}$ and the non-leptonic decays $D^*_{(s)}to PP, PV$ with\u0000$P=pi, K, eta^{(prime)}, V=rho, K^*, phi$ and $ell=e, mu$, which are\u0000within the range $10^{-13}sim 10^{-6}$. Among these decays, the channels\u0000$D_{s}^{*+}toeta ell^{+}nu_{ell}$ and $D^{*+}_{s}to etarho^{+}$ possess\u0000the largest branching ratios, which can reach up to $10^{-6}$ order. These\u0000decays are most likely to be accessible at the future high-luminosity\u0000experiments. One can find that the branching ratios\u0000$mathcal{B}r(D_{s}^{*+}toeta ell^{+}nu_{ell})=1.46times10^{-6}$ and\u0000$mathcal{B}r(D_{s}^{*+}toeta rho^{+})=1.04times10^{-6}$ correspond to tens\u0000of thousands of events in the $e^+e^-$ collider experiments, such as the STCF,\u0000CEPC and FCC-ee, and tens of millions of events at the HL-LHC. In a word, it is\u0000feasible to study the $D^*_{(s)}$ meson weak decays in the future experiments.\u0000Furthermore, we also predict and discuss another two physical observations,\u0000that is, the longitudinal polarization fraction $f_{L}$ and the\u0000forward-backward asymmetry $A_{FB}$, for our considered decays.","PeriodicalId":501067,"journal":{"name":"arXiv - PHYS - High Energy Physics - Phenomenology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142223501","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}
We present a comprehensive study of the finite temperature CP-asymmetry factor needed in the semi-classical treatment of leptogenesis originating from Majorana fermion decays into a lepton and a scalar particle. The imaginary part of the relevant one-loop integrals are evaluated using both the real time and the imaginary time formalisms of thermal quantum field theory. In the former we consider the retarded-advanced approach as well as the original thermal cutting method developed by Kobes and Semenoff. Specific care is directed towards showing the consistency between the various approaches. We show that the final physical result of the calculation is linear in the statistical factors and is consistent with what is obtained in the Kadanoff-Baym approach. We also present analytic expressions for the full CP-asymmetry factor in the form of well-behaved triple-integrals, and provide numerical benchmark predictions in a specific particle physics model.
{"title":"CP violation at finite temperature","authors":"Károly Seller, Zsolt Szép, Zoltán Trócsányi","doi":"arxiv-2409.07180","DOIUrl":"https://doi.org/arxiv-2409.07180","url":null,"abstract":"We present a comprehensive study of the finite temperature CP-asymmetry\u0000factor needed in the semi-classical treatment of leptogenesis originating from\u0000Majorana fermion decays into a lepton and a scalar particle. The imaginary part\u0000of the relevant one-loop integrals are evaluated using both the real time and\u0000the imaginary time formalisms of thermal quantum field theory. In the former we\u0000consider the retarded-advanced approach as well as the original thermal cutting\u0000method developed by Kobes and Semenoff. Specific care is directed towards\u0000showing the consistency between the various approaches. We show that the final\u0000physical result of the calculation is linear in the statistical factors and is\u0000consistent with what is obtained in the Kadanoff-Baym approach. We also present\u0000analytic expressions for the full CP-asymmetry factor in the form of\u0000well-behaved triple-integrals, and provide numerical benchmark predictions in a\u0000specific particle physics model.","PeriodicalId":501067,"journal":{"name":"arXiv - PHYS - High Energy Physics - Phenomenology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142178499","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 recent years, with the increasing luminosities of colliders, handling the growing amount of data has become a major challenge for future New Physics~(NP) phenomenological research. To improve efficiency, machine learning algorithms have been introduced into the field of high-energy physics. As a machine learning algorithm, kernel k-means has been demonstrated to be useful for searching NP signals. It is well known that the kernel k-means algorithm can be carried out with the help of quantum computing, which suggests that quantum kernel k-means~(QKKM) is also a potential tool for NP phenomenological studies in the future. This paper investigates how to search for NP signals using the k-means anomaly detection event selection strategy with quantum kernels. Taking the $mu^+mu^-to vbar{v}gammagamma$ process at a muon collider as an example, the dimension-8 operators contributing to anomalous quartic gauge couplings~(aQGCs) are studied. The expected coefficient constraints obtained using the QKKM of three different forms of quantum kernels and k-means algorithm are presented, it can be shown that QKKM can help to find the signal of aQGCs.
{"title":"Detect anomalous quartic gauge couplings at muon colliders with quantum kernel k-means","authors":"Shuai Zhang, Ke-Xin Chen, Ji-Chong Yang","doi":"arxiv-2409.07010","DOIUrl":"https://doi.org/arxiv-2409.07010","url":null,"abstract":"In recent years, with the increasing luminosities of colliders, handling the\u0000growing amount of data has become a major challenge for future New Physics~(NP)\u0000phenomenological research. To improve efficiency, machine learning algorithms\u0000have been introduced into the field of high-energy physics. As a machine\u0000learning algorithm, kernel k-means has been demonstrated to be useful for\u0000searching NP signals. It is well known that the kernel k-means algorithm can be\u0000carried out with the help of quantum computing, which suggests that quantum\u0000kernel k-means~(QKKM) is also a potential tool for NP phenomenological studies\u0000in the future. This paper investigates how to search for NP signals using the\u0000k-means anomaly detection event selection strategy with quantum kernels. Taking\u0000the $mu^+mu^-to vbar{v}gammagamma$ process at a muon collider as an\u0000example, the dimension-8 operators contributing to anomalous quartic gauge\u0000couplings~(aQGCs) are studied. The expected coefficient constraints obtained\u0000using the QKKM of three different forms of quantum kernels and k-means\u0000algorithm are presented, it can be shown that QKKM can help to find the signal\u0000of aQGCs.","PeriodicalId":501067,"journal":{"name":"arXiv - PHYS - High Energy Physics - Phenomenology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142223502","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}
Cascade parameterization of hadronic reactions is a central tool in hadron spectroscopy for modeling matrix elements and extracting parameters of hadronic states. Implementing the helicity formalism consistently presents challenges, particularly for particles with spin, due to the need for matching spin states of final-state particles, known as the Wigner rotations. This paper discusses these challenges in detail and offers solutions, including a practical method for implementation. Equipped with a general algorithm for computing Wigner rotations, we extend the studies to alternative amplitude formulations, the minus-phi and canonical conventions.
{"title":"Wigner rotations for cascade reactions","authors":"Kai Habermann, Mikhail Mikhasenko","doi":"arxiv-2409.06913","DOIUrl":"https://doi.org/arxiv-2409.06913","url":null,"abstract":"Cascade parameterization of hadronic reactions is a central tool in hadron\u0000spectroscopy for modeling matrix elements and extracting parameters of hadronic\u0000states. Implementing the helicity formalism consistently presents challenges,\u0000particularly for particles with spin, due to the need for matching spin states\u0000of final-state particles, known as the Wigner rotations. This paper discusses\u0000these challenges in detail and offers solutions, including a practical method\u0000for implementation. Equipped with a general algorithm for computing Wigner\u0000rotations, we extend the studies to alternative amplitude formulations, the\u0000minus-phi and canonical conventions.","PeriodicalId":501067,"journal":{"name":"arXiv - PHYS - High Energy Physics - Phenomenology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142178505","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 instant preheating scenario efficient particle production occurs immediately following the period of inflationary expansion in the early Universe. We demonstrate that instant preheating predicts unique gravitational wave (GW) signals arising from two distinct origins. One source is the bremsstrahlung GWs produced through the decay of superheavy particles, an inevitable consequence of instant preheating. The other is GWs generated from the nonlinear dynamics of the inflaton and coupled scalar fields. Using numerical simulations, we show that the peak of the GW spectrum shifts depending on the coupling constants of the theory. The detection of these dual GW signatures, characteristic of instant preheating, provides novel opportunities for probing the dynamics of the early Universe.
{"title":"Dual Gravitational Wave Signatures of Instant Preheating","authors":"Wei-Yu Hu, Kazunori Nakayama, Volodymyr Takhistov, Yong Tang","doi":"arxiv-2409.06483","DOIUrl":"https://doi.org/arxiv-2409.06483","url":null,"abstract":"In the instant preheating scenario efficient particle production occurs\u0000immediately following the period of inflationary expansion in the early\u0000Universe. We demonstrate that instant preheating predicts unique gravitational\u0000wave (GW) signals arising from two distinct origins. One source is the\u0000bremsstrahlung GWs produced through the decay of superheavy particles, an\u0000inevitable consequence of instant preheating. The other is GWs generated from\u0000the nonlinear dynamics of the inflaton and coupled scalar fields. Using\u0000numerical simulations, we show that the peak of the GW spectrum shifts\u0000depending on the coupling constants of the theory. The detection of these dual\u0000GW signatures, characteristic of instant preheating, provides novel\u0000opportunities for probing the dynamics of the early Universe.","PeriodicalId":501067,"journal":{"name":"arXiv - PHYS - High Energy Physics - Phenomenology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142178524","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}
We study some phenomenological effects of kinetic mixing between the hypercharge field and a new $U(1)$ gauge field in specific $Z^prime$ models that ameliorate the tensions between measurements and Standard Model predictions in $b rightarrow sell^+ ell^-$ decays. To this end, we rederive the dimension-6 SMEFT coefficients resulting from integrating out the kinetically-mixed (`malaphoric') $Z^prime$ field. The kinetic mixing provides a family-universal component to the couplings of the $Z^prime$ field, which can improve fits to lepton flavour universality observables. We show how kinetic mixing improves the best fit of the $B_3-L_2$ model to $brightarrow s$ data by 7.3 units of $chi^2$ while remaining compatible with other relevant data sets such as electroweak precision observables and measurements of $e^+ e^- rightarrow ell^+ ell^-$ at LEP2.
{"title":"Malaphoric $Z'$ models for $b rightarrow s ell^+ ell^-$ anomalies","authors":"Ben Allanach, Nico Gubernari","doi":"arxiv-2409.06804","DOIUrl":"https://doi.org/arxiv-2409.06804","url":null,"abstract":"We study some phenomenological effects of kinetic mixing between the\u0000hypercharge field and a new $U(1)$ gauge field in specific $Z^prime$ models\u0000that ameliorate the tensions between measurements and Standard Model\u0000predictions in $b rightarrow sell^+ ell^-$ decays. To this end, we rederive\u0000the dimension-6 SMEFT coefficients resulting from integrating out the\u0000kinetically-mixed (`malaphoric') $Z^prime$ field. The kinetic mixing provides\u0000a family-universal component to the couplings of the $Z^prime$ field, which\u0000can improve fits to lepton flavour universality observables. We show how\u0000kinetic mixing improves the best fit of the $B_3-L_2$ model to $brightarrow s$\u0000data by 7.3 units of $chi^2$ while remaining compatible with other relevant\u0000data sets such as electroweak precision observables and measurements of $e^+\u0000e^- rightarrow ell^+ ell^-$ at LEP2.","PeriodicalId":501067,"journal":{"name":"arXiv - PHYS - High Energy Physics - Phenomenology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142223506","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 vector charmonium states can be directly produced at the $e^+e^{-}$ annihilation process. Among them, $Y(4230)$ and $Y(4360)$ splitting from the previously discovered $Y(4260)$ are not easily arranged into the conventional charmonium spectrum, while the recent studies indicated that they have strong couplings to $Dbar{D}_1$ and $D^*bar{D}_1$. In this work, we investigate the productions of $Y(4230)$ and $Y(4360)$ as the heavy quark spin symmetry doublet hadronic molecules of $Dbar{D}_1$ and $D^*bar{D}_1$ in $B$ decays via the triangle diagram mechanism. In particular, we propose that the decay constants of $Y(4230)$ and $Y(4360)$ extracted in $B$ decays are helpful to clarify their nature.
{"title":"Exploring the nature of $Y(4230)$ and $Y(4360)$ in B decays","authors":"Ming-Zhu Liu, Qi Wu","doi":"arxiv-2409.06539","DOIUrl":"https://doi.org/arxiv-2409.06539","url":null,"abstract":"The vector charmonium states can be directly produced at the $e^+e^{-}$\u0000annihilation process. Among them, $Y(4230)$ and $Y(4360)$ splitting from the\u0000previously discovered $Y(4260)$ are not easily arranged into the conventional\u0000charmonium spectrum, while the recent studies indicated that they have strong\u0000couplings to $Dbar{D}_1$ and $D^*bar{D}_1$. In this work, we investigate the\u0000productions of $Y(4230)$ and $Y(4360)$ as the heavy quark spin symmetry doublet\u0000hadronic molecules of $Dbar{D}_1$ and $D^*bar{D}_1$ in $B$ decays via the\u0000triangle diagram mechanism. In particular, we propose that the decay constants\u0000of $Y(4230)$ and $Y(4360)$ extracted in $B$ decays are helpful to clarify their\u0000nature.","PeriodicalId":501067,"journal":{"name":"arXiv - PHYS - High Energy Physics - Phenomenology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142178514","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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