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Amplitude analyses of multi-body hadronic D+ (s) decays at BESIII BESIII多体强子D+ (s)衰变振幅分析
Suplemento de la Revista Mexicana de Física Pub Date : 2022-08-10 DOI: 10.31349/suplrevmexfis.3.0308060
Panting Ge
{"title":"Amplitude analyses of multi-body hadronic D+ (s) decays at BESIII","authors":"Panting Ge","doi":"10.31349/suplrevmexfis.3.0308060","DOIUrl":"https://doi.org/10.31349/suplrevmexfis.3.0308060","url":null,"abstract":"Using e +e − annihilation data corresponding to a total integrated luminosity of 6.32 fb−1 and 2.93 fb−1 collected at the center-of-mass energies 4.178-4.226 GeV and 3.773 GeV with the BESIII detector, we have performed amplitude analyses of the decays D + s → K− K+ π+, D + s → K0 Sπ+π0 , D + s → K0 SK−π+π+, D + s → K+K−π+ π0 , D + s → ηπ+ π+ π−, and D+ → K0 SK+π0 . We present the results based on these amplitude analyses where rich structures have been observed. In addition, we also report observations of some new hadronic D + (s) decay modes D + s → K0 ρ(770)+, D + s → K∗ (892)0π +, D + s → K∗ (892)+π0 , and D + (s) → a0(980)+ρ 0 and the determinations of their decay branching fractions which are 5.46±0.84stat. ±0.44syst. ×10−3 , 2.71±0.72stat. ±0.30syst. ×10−3 , 0.75±0.24stat. ±0.06syst. ×10−3 , and 0.21 ± 0.08stat. ± 0.05syst.%","PeriodicalId":210091,"journal":{"name":"Suplemento de la Revista Mexicana de Física","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-08-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114166505","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}
引用次数: 1
Hadron research with AMBER at CERN 在欧洲核子研究中心与AMBER进行强子研究
Suplemento de la Revista Mexicana de Física Pub Date : 2022-08-10 DOI: 10.31349/suplrevmexfis.3.0308009
J. Friedrich
{"title":"Hadron research with AMBER at CERN","authors":"J. Friedrich","doi":"10.31349/suplrevmexfis.3.0308009","DOIUrl":"https://doi.org/10.31349/suplrevmexfis.3.0308009","url":null,"abstract":"The recently approved NA66/AMBER experiment (Apparatus for Meson and Baryon Experimental Research) at the CERN Super Proton Synchrotron pursues a broad research program in quantum chromodynamics. It ranges in its first phase from a precision measurement of the proton radius with a 100 GeV muon beam to investigating the quark-gluon structure of mesons in Drell-Yan processes. In a second phase, radio-frequency separated kaon beams will allow to extend such investigations to the strangeness sector.","PeriodicalId":210091,"journal":{"name":"Suplemento de la Revista Mexicana de Física","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-08-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128413162","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}
引用次数: 0
Measurements of the CKM angle gamma at LHCb LHCb的CKM角测量
Suplemento de la Revista Mexicana de Física Pub Date : 2022-08-09 DOI: 10.31349/suplrevmexfis.3.0308057
W. Krupa
{"title":"Measurements of the CKM angle gamma at LHCb","authors":"W. Krupa","doi":"10.31349/suplrevmexfis.3.0308057","DOIUrl":"https://doi.org/10.31349/suplrevmexfis.3.0308057","url":null,"abstract":"The tree-level measurement of the CKM angle γ is one of the most important tests of CP violation in the Standard Model. Discrepancies between measurements in tree-level decays and decays with loops might provide evidence of physics beyond the Standard Model. Results of the recent analysis of B0 → D0K∗0, B0s →D±s K±π±π∓, B± → D h± and B− → D∗K− decays are presented in this paper. A newcombination of all LHCb measurements is also discussed. The achieved precision of the LHCb result, γ = (67 ± 4)◦, dominates the worldaverage.","PeriodicalId":210091,"journal":{"name":"Suplemento de la Revista Mexicana de Física","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-08-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124828389","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}
引用次数: 0
Nonlinear Regge trayectories in the context of bottom-up holography 在自下而上全息背景下的非线性雷格轨迹
Suplemento de la Revista Mexicana de Física Pub Date : 2022-08-03 DOI: 10.31349/suplrevmexfis.3.0308017
M. A. Martín Contreras, Alfredo Vega
{"title":"Nonlinear Regge trayectories in the context of bottom-up holography","authors":"M. A. Martín Contreras, Alfredo Vega","doi":"10.31349/suplrevmexfis.3.0308017","DOIUrl":"https://doi.org/10.31349/suplrevmexfis.3.0308017","url":null,"abstract":"Motivated by the non-holographic phenomenology, where the mesonic constituent mass breaks linearity in Regge trajectories, we discuss how to implement nonlinear Regge trajectories by deforming the static (monoparametric) quadratic dilaton into a non-quadratic one. This deformation adds an extra parameter into the dilaton, which measures the constituent mass effect, accounting for nonlinearity in the hadronic trajectory. We applied this model to the description of the isovector multiplet spectrum. The set of isovector parameters defines a set of hadronic calibration curves for the dilaton slope and linearity deviation parameter, allowing us to extrapolate the model to other vector states, such as heavy-light mesons or vector non-qq¯ hadrons. In other words, this approach allows us to consider the hadronic inner structure by modifying the dilaton profile.","PeriodicalId":210091,"journal":{"name":"Suplemento de la Revista Mexicana de Física","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-08-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117085979","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}
引用次数: 1
Amplitude analysis of ηπ final states at glueX glueX中ηπ终态的振幅分析
Suplemento de la Revista Mexicana de Física Pub Date : 2022-08-03 DOI: 10.31349/suplrevmexfis.3.0308021
C. Gleason
{"title":"Amplitude analysis of ηπ final states at glueX","authors":"C. Gleason","doi":"10.31349/suplrevmexfis.3.0308021","DOIUrl":"https://doi.org/10.31349/suplrevmexfis.3.0308021","url":null,"abstract":"The primary goal of the GlueX experiment at Jefferson Lab is to map the spectrum of light hybrid mesons. GlueX, which has a linearly polarized photon beam and a large acceptance for both charged and neutral particles, has access to both the neutral, γp → ηπ0 p, and charged, γp → ηπ−∆++, final states. These proceedings will discuss the amplitude analysis of ηπ channels at GlueX with a focus on the study of the production of the a2(1320) meson as function of Mandelstam t.","PeriodicalId":210091,"journal":{"name":"Suplemento de la Revista Mexicana de Física","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-08-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132202887","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}
引用次数: 0
Double parton scattering via photon-proton interactions: a new light on the transverse proton structure 光子-质子相互作用下的双部子散射:对横向质子结构的新认识
Suplemento de la Revista Mexicana de Física Pub Date : 2022-08-02 DOI: 10.31349/suplrevmexfis.3.0308096
M. Rinaldi
{"title":"Double parton scattering via photon-proton interactions: a new light on the transverse proton structure","authors":"M. Rinaldi","doi":"10.31349/suplrevmexfis.3.0308096","DOIUrl":"https://doi.org/10.31349/suplrevmexfis.3.0308096","url":null,"abstract":"In this contribution we present the main results of the investigation about double parton scattering (DPS) in quasi-real photon proton interactions. We show the first evaluation of the DPS cross-section at leading-order for the four-jet photo-production observed at HERA. To this aim the $gamma-p$ effective cross section has been computed for the first time. One of the main outcomes of this analysis is that the DPS contribution is not negligible and potentially measurable. Furthermore, possible future data could be used to get new information on the transverse proton structure not accessible in other processes.","PeriodicalId":210091,"journal":{"name":"Suplemento de la Revista Mexicana de Física","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-08-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133878113","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}
引用次数: 0
Light front wave functions from AdS/QCD models AdS/QCD模型的光前波函数
Suplemento de la Revista Mexicana de Física Pub Date : 2022-08-02 DOI: 10.31349/suplrevmexfis.3.0308098
Alfredo Vega, A. Martin Contreras
{"title":"Light front wave functions from AdS/QCD models","authors":"Alfredo Vega, A. Martin Contreras","doi":"10.31349/suplrevmexfis.3.0308098","DOIUrl":"https://doi.org/10.31349/suplrevmexfis.3.0308098","url":null,"abstract":"In this talk, we present an extension to the matching procedure proposed by Brodsky and de Teramond to obtain the two-body wave functions in the light-front formalism for holographic models. We consider different static dilaton fields and AdS-like geometric deformations.","PeriodicalId":210091,"journal":{"name":"Suplemento de la Revista Mexicana de Física","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-08-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114822178","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}
引用次数: 0
Nucleon structure from a light-front hamiltonian 从光前沿哈密顿算符得到的核子结构
Suplemento de la Revista Mexicana de Física Pub Date : 2022-08-01 DOI: 10.31349/suplrevmexfis.3.0308111
Siqi Xu, C. Mondal, Yang Li, Xingbo Zhao, J. Vary
{"title":"Nucleon structure from a light-front hamiltonian","authors":"Siqi Xu, C. Mondal, Yang Li, Xingbo Zhao, J. Vary","doi":"10.31349/suplrevmexfis.3.0308111","DOIUrl":"https://doi.org/10.31349/suplrevmexfis.3.0308111","url":null,"abstract":"\u0000 \u0000 \u0000We obtain the light-front wave functions (LFWFs) of the nucleon in the leading Fock sector representation using basis light-front quantization (BLFQ) approach. We adopt a light-front effective Hamiltonian, which includes a three-dimensional confining potential and a one-gluon exchange interaction with fixed coupling, and solve for it mass eigenstates. We then employ the LFWFs to compute the axial form factor and the transverse charge and magnetization densities for the nucleon. The axial form factor is found to be consistent with the experimental data. The charge and magnetization densities agree qualitatively with the phenomenological fits. \u0000 \u0000 \u0000","PeriodicalId":210091,"journal":{"name":"Suplemento de la Revista Mexicana de Física","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114775061","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}
引用次数: 1
Covalent hadronic molecules via QCD sum rules 共价强子分子的QCD求和规则
Suplemento de la Revista Mexicana de Física Pub Date : 2022-08-01 DOI: 10.31349/suplrevmexfis.3.0308036
R. Dong, Hua-Xing Chen, Niu Su, Hong-Zhou Xi, Yi-Xin Yan
{"title":"Covalent hadronic molecules via QCD sum rules","authors":"R. Dong, Hua-Xing Chen, Niu Su, Hong-Zhou Xi, Yi-Xin Yan","doi":"10.31349/suplrevmexfis.3.0308036","DOIUrl":"https://doi.org/10.31349/suplrevmexfis.3.0308036","url":null,"abstract":"After carefully examining Feynman diagrams corresponding to the $bar D Sigma_c$ hadronic molecular state, we propose a possible binding mechanism induced by shared light quarks. We systematically study its corresponding light-quark-exchange interaction using the method of QCD sum rules, and the obtained results suggest that there can be the $bar D Sigma_c$ covalent molecule of $I=1/2$. Our QCD sum rule analyses further indicate a model-independent hypothesis: the light-quark-exchange interaction is attractive when the shared light quarks are totally antisymmetric so that obey the Pauli principle.","PeriodicalId":210091,"journal":{"name":"Suplemento de la Revista Mexicana de Física","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131248933","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}
引用次数: 0
Studying the quark gap equation at finite temperature, magnetic field and different numbers of flavor and color numbers 研究了有限温度、磁场和不同味色数下的夸克间隙方程
Suplemento de la Revista Mexicana de Física Pub Date : 2022-08-01 DOI: 10.31349/suplrevmexfis.3.0308128
M. A. Bedolla, A. Bashir, A. Ahmad, Jesús Javier Cobos Martínez
{"title":"Studying the quark gap equation at finite temperature, magnetic field and different numbers of flavor and color numbers","authors":"M. A. Bedolla, A. Bashir, A. Ahmad, Jesús Javier Cobos Martínez","doi":"10.31349/suplrevmexfis.3.0308128","DOIUrl":"https://doi.org/10.31349/suplrevmexfis.3.0308128","url":null,"abstract":"In recent years, a momentum-independent symmetry preserving vector-vector contact interaction has been used to provide exploratory studies in QCD. It helps calculate different static and dynamic observables of all mesons and baryons. In this work, we revisit how the quark gap equation is affected by changing the number of quark colors and/or flavors, or by placing quarks in a thermal bath in the presence of an external magnetic field. In particular, we describe how the phenomenon of magnetic catalysis and its inverse can be studied.","PeriodicalId":210091,"journal":{"name":"Suplemento de la Revista Mexicana de Física","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132454826","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}
引用次数: 0
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