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Rivet and the analysis preservation in heavy-ion collisions experiments 重离子碰撞实验中的铆钉与分析保存
Suplemento de la Revista Mexicana de Física Pub Date : 2022-12-10 DOI: 10.31349/SuplRevMexFis.3.040909
Antonio Carlos Oliveira da Silva
{"title":"Rivet and the analysis preservation in heavy-ion collisions experiments","authors":"Antonio Carlos Oliveira da Silva","doi":"10.31349/SuplRevMexFis.3.040909","DOIUrl":"https://doi.org/10.31349/SuplRevMexFis.3.040909","url":null,"abstract":"The comparison of experimental data and theoretical predictions is important for our understanding of the mechanisms for interactions and particle production in hadron collisions, both at the Large Hadron Collider and at the Relativistic Heavy-Ion Collider experiments. Several tools were ideated to help with that. Rivet (Robust Independent Validation of Experiment and Theory) is a framework that facilitates the comparison between measurements from high-energy physics experiments and Monte Carlo event generators able to produce outputs using the HepMC package. Rivet contains a repository with analysis algorithms developed by experiments, providing analysis documentation and preservation. The recent developments for the implementation of centrality and multiplicity classes in Rivet are presented in this contribution.","PeriodicalId":210091,"journal":{"name":"Suplemento de la Revista Mexicana de Física","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-12-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123037141","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
Determination of the shear viscosity and light quark diffusivity of QGP with two-particle correlation functions 用双粒子相关函数测定QGP的剪切粘度和轻夸克扩散系数
Suplemento de la Revista Mexicana de Física Pub Date : 2022-12-10 DOI: 10.31349/suplrevmexfis.3.040904
C. Pruneau
{"title":"Determination of the shear viscosity and light quark diffusivity of QGP with two-particle correlation functions","authors":"C. Pruneau","doi":"10.31349/suplrevmexfis.3.040904","DOIUrl":"https://doi.org/10.31349/suplrevmexfis.3.040904","url":null,"abstract":"We discuss measurements of general balance functions recently reported by the ALICE collaboration in the context of a two-stage quark production model and towards the determination of light quark diffusivity.","PeriodicalId":210091,"journal":{"name":"Suplemento de la Revista Mexicana de Física","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-12-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130876625","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
Heavy Flavor and Quarkonia Physics at sPHENIX 斯芬尼克斯的重味和夸克尼亚物理
Suplemento de la Revista Mexicana de Física Pub Date : 2022-12-10 DOI: 10.31349/suplrevmexfis.3.040919
T. Marshall
{"title":"Heavy Flavor and Quarkonia Physics at sPHENIX","authors":"T. Marshall","doi":"10.31349/suplrevmexfis.3.040919","DOIUrl":"https://doi.org/10.31349/suplrevmexfis.3.040919","url":null,"abstract":"The sPHENIX detector, being constructed at BNL’s Relativistic Heavy Ion Collider (RHIC), will begin measuring a plethora of Heavy Flavor and Quarkonia observables with unprecedented statistics and kinematic reach at RHIC energies starting in 2023. This includes the largest recorded sample of b-flavored hadron decays from Heavy Ion collisions at RHIC, allowing for precise probes of the QGP using charm and beauty quarks. These measurements are enabled by the excellent vertexing of the MAPS-based micro-VerTeX detector (MVTX), timing of the INTermediate silicon strip Tracker (INTT), precision tracking by the Time Projection Chamber (TPC), and the ElectroMagnetic and Hadronic Calorimetry systems (EMCal and HCal, respectively), the latter of which is deployed for the first time at RHIC. The sPHENIX collaboration has created the reconstruction software stack as well as realistic data simulations, which allow for testing and optimization of the software and physics selections.","PeriodicalId":210091,"journal":{"name":"Suplemento de la Revista Mexicana de Física","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-12-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123446460","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
Results on light (anti)nuclei production in Pb–Pb collisions with ALICE at the LHC 大型强子对撞机ALICE对Pb-Pb碰撞产生轻(反)核的结果
Suplemento de la Revista Mexicana de Física Pub Date : 2022-12-10 DOI: 10.31349/suplrevmexfis.3.040905
E. Bartsch
{"title":"Results on light (anti)nuclei production in Pb–Pb collisions with ALICE at the LHC","authors":"E. Bartsch","doi":"10.31349/suplrevmexfis.3.040905","DOIUrl":"https://doi.org/10.31349/suplrevmexfis.3.040905","url":null,"abstract":"The high collision energies reached at the LHC lead to significant production yields of light (anti)nuclei in proton-proton, p–Pb and Pb–Pb collisions. Light (anti)nuclei are identified using their specific energy loss (dE/dx), measured in the Time Projection Chamber, and their velocity using the Time-Of-Flight detector. The excellent tracking and particle identification capabilities of the ALICE experiment, as well as its low material budget, make this detector unique for measurements of these rarely produced particles. Results on (anti)deuteron, (anti)triton, (anti)3He and (anti) He production in Pb–Pb collisions at p  sNN = 5.02 TeV, including their transverse momentum (pT) spectra, production  yields and coalescence parameters BA, are presented. These results will be compared to the expectations of coalescence and statistical hadronization models to obtain information on the production mechanism of light (anti)nuclei in heavy-ion collisions. Furthermore, the first measurements of the d and 3He absorption cross section are shown.","PeriodicalId":210091,"journal":{"name":"Suplemento de la Revista Mexicana de Física","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-12-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125576411","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
Temperature of the QGP: a brief overview QGP的温度:简要概述
Suplemento de la Revista Mexicana de Física Pub Date : 2022-12-10 DOI: 10.31349/suplrevmexfis.3.040915
M. Sas
{"title":"Temperature of the QGP: a brief overview","authors":"M. Sas","doi":"10.31349/suplrevmexfis.3.040915","DOIUrl":"https://doi.org/10.31349/suplrevmexfis.3.040915","url":null,"abstract":"These proceedings give a br.ief overview of the measurements of the effective temperature of the quark-gluon plasma.","PeriodicalId":210091,"journal":{"name":"Suplemento de la Revista Mexicana de Física","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-12-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117243254","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
Lattice-QCD-based equations of state at finite temperature and density 有限温度和密度下基于点阵qcd的状态方程
Suplemento de la Revista Mexicana de Física Pub Date : 2022-11-08 DOI: 10.31349/suplrevmexfis.3.040907
J. Karthein, D. Mroczek, A. N. Acuna, J. Noronha-Hostler, P. Parotto, D. Price, C. Ratti
{"title":"Lattice-QCD-based equations of state at finite temperature and density","authors":"J. Karthein, D. Mroczek, A. N. Acuna, J. Noronha-Hostler, P. Parotto, D. Price, C. Ratti","doi":"10.31349/suplrevmexfis.3.040907","DOIUrl":"https://doi.org/10.31349/suplrevmexfis.3.040907","url":null,"abstract":"The equation of state (EoS) of QCD is a crucial input for the modeling of heavy-ion-collision (HIC) and neutron-star-merger systems. Calculations of the fundamental theory of QCD, which could yield the true EoS, are hindered by the infamous Fermi sign problem which only allows direct simulations at zero or imaginary baryonic chemical potential. As a direct consequence, the current coverage of the QCD phase diagram by lattice simulations is limited. In these proceedings, two different equations of state based on first-principle lattice QCD (LQCD) calculations are discussed. The first is solely informed by the fundamental theory by utilizing all available diagonal and non-diagonal susceptibilities up to O(µ 4 B) in order to reconstruct a full EoS at finite baryon number, electric charge and strangeness chemical potentials. For the second, we go beyond information from the lattice in order to explore the conjectured phase structure, not yet determined by LQCD methods, to assist the experimental HIC community in their search for the critical point. We incorporate critical behavior into this EoS by relying on the principle of universality classes, of which QCD belongs to the 3D Ising Model. This allows one to study the effects of a singularity on the thermodynamical quantities that make up the equation of state used for hydrodynamical simulations of HICs. Additionally, we ensure that these EoSs are valid for applications to HICs by enforcing conditions of strangeness neutrality and fixed charge-to-baryonnumber ratio.","PeriodicalId":210091,"journal":{"name":"Suplemento de la Revista Mexicana de Física","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-11-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122283808","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
Femtoscopic study on the ΛΛ-NΞ interaction ΛΛ-NΞ相互作用的飞镜研究
Suplemento de la Revista Mexicana de Física Pub Date : 2022-09-02 DOI: 10.31349/suplrevmexfis.3.0308124
Y. Kamiya, K. Sasaki, T. Fukui, T. Hyodo, K. Morita, K. Ogata, A. Ohnishi, T. Hatsuda
{"title":"Femtoscopic study on the ΛΛ-NΞ interaction","authors":"Y. Kamiya, K. Sasaki, T. Fukui, T. Hyodo, K. Morita, K. Ogata, A. Ohnishi, T. Hatsuda","doi":"10.31349/suplrevmexfis.3.0308124","DOIUrl":"https://doi.org/10.31349/suplrevmexfis.3.0308124","url":null,"abstract":"The correlation functions of pΞ − and ΛΛ pairs from high-energy pp collisions are investigated in the coupled-channel formalism. The NΞΛΛ coupled-channel potentials obtained in the lattice QCD calculation at almost physical quark masses are employed. The pΞ − correlation function shows the large enhancement from the pure Coulomb case, while the ΛΛ correlation function shows the moderate enhancement from the pure quantum statistics case. This agreement indicates that both the NΞ and ΛΛ interactions are moderately attractive without having quasibound or bound state.","PeriodicalId":210091,"journal":{"name":"Suplemento de la Revista Mexicana de Física","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-09-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129218922","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
Plasma screening and the critical end point in the QCD phase diagram 血浆筛选和QCD相位图中的临界终点
Suplemento de la Revista Mexicana de Física Pub Date : 2022-08-18 DOI: 10.31349/suplrevmexfis.3.040917
A. Ayala, Bilgai Almeida Zamora, J. J. Cobos-Mart'inez, S. Hern'andez-Ortiz, L. A. Hern'andez, A. Raya, M. E. Tejeda-Yeomans
{"title":"Plasma screening and the critical end point in the QCD phase diagram","authors":"A. Ayala, Bilgai Almeida Zamora, J. J. Cobos-Mart'inez, S. Hern'andez-Ortiz, L. A. Hern'andez, A. Raya, M. E. Tejeda-Yeomans","doi":"10.31349/suplrevmexfis.3.040917","DOIUrl":"https://doi.org/10.31349/suplrevmexfis.3.040917","url":null,"abstract":"In heavy-ion collisions, fluctuations of conserved charges are known to be sensitive observables to probe criticality for the QCD phase transition and to locate the position of the putative critical end point (CEP). In this work we seek to show that the Linear Sigma Model with quarks produces an effective description of the QCD phase diagram in which deviations from a Hadron Resonance Gas are due to plasma screening effects, encoded in the contribution of the ring diagrams. Accounting for these, it is possible to include in the description the effect of long-range correlations. To set the model parameters we use LQCD results for the crossover transition at vanishing chemical potential. Finally, studying baryon number fluctuations from the model, we show that the CEP can be located within the HADES and/or the lowest end of the NICA energy domain, √ sNN ∼ 2 GeV.","PeriodicalId":210091,"journal":{"name":"Suplemento de la Revista Mexicana de Física","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-08-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114201953","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
Transverse momentum dependent parton distribution functions and QCD evolution equations 横向动量依赖的部子分布函数和QCD演化方程
Suplemento de la Revista Mexicana de Física Pub Date : 2022-08-16 DOI: 10.31349/suplrevmexfis.3.020728
M. Hentschinski
{"title":"Transverse momentum dependent parton distribution functions and QCD evolution equations","authors":"M. Hentschinski","doi":"10.31349/suplrevmexfis.3.020728","DOIUrl":"https://doi.org/10.31349/suplrevmexfis.3.020728","url":null,"abstract":"We provide an overview over Transverse Momentum Dependent (TMD) Parton Distribution Functions (PDFs). While we will also comment on TMD PDFs in general, we will focus on their use for the description of hadronic reactions in the so-called low x limit. Here $x = M^2/s$ and $M$ is the hard scale of the process, while $sqrt{s}$ is the center of mass energy of the reaction. We will explain why this are interesting quantities whose exploration serves a manifold purpose. In particular we will explain why these are interesting quantities both for the accurate description of LHC data and why exploration of such quantities is a central goal of the future Electron Ion Collider. In a second part of this talk we will then discuss how perturbative QCD allows us to formulate and solve differential equations, which describe the dependence of this TMD PDFs on various kinematic variables.","PeriodicalId":210091,"journal":{"name":"Suplemento de la Revista Mexicana de Física","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-08-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115314836","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
A Semi-analytical Method of Calculating Nuclear Collision Trajectory in the QCD Phase Diagram 计算QCD相图中核碰撞轨迹的半解析方法
Suplemento de la Revista Mexicana de Física Pub Date : 2022-08-15 DOI: 10.31349/suplrevmexfis.3.040920
Zi-Wei Lin, T. Mendenhall
{"title":"A Semi-analytical Method of Calculating Nuclear Collision Trajectory in the QCD Phase Diagram","authors":"Zi-Wei Lin, T. Mendenhall","doi":"10.31349/suplrevmexfis.3.040920","DOIUrl":"https://doi.org/10.31349/suplrevmexfis.3.040920","url":null,"abstract":"The finite nuclear thickness affects the energy density (t) and conserved-charge densities such as the net-baryon density nB(t) produced in heavy ion collisions. While the effect is small at high collision energies where the Bjorken energy density formula for the initial state is valid, the effect is large at low collision energies, where the nuclear crossing time is not small compared to the parton formation time. The temperature T(t) and chemical potentials µ(t) of the dense matter can be extracted from the densities for a given equation of state (EOS). Therefore, including the nuclear thickness is essential for the determination of the T-µB trajectory in the QCD phase diagram for relativistic nuclear collisions at low to moderate energies such as the RHIC-BES energies. In this proceeding, we will first discuss our semi-analytical method that includes the nuclear thickness effect and its results on the densities є(t), nB(t), nQ(t), and nS(t). Then, we will show the extracted T(t), µB(t), µQ(t), and µS(t) for a quark-gluon plasma using the ideal gas EOS with quantum or Boltzmann statistics. Finally, we will show the results on the T-µB trajectories in relation to the possible location of the QCD critical end point. This semi-analytical model provides a convenient tool for exploring the trajectories of nuclear collisions in the QCD phase diagram.","PeriodicalId":210091,"journal":{"name":"Suplemento de la Revista Mexicana de Física","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-08-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122620028","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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