A. V. Golda, A. A. Golubenko, M. M. Davydov, E. L. Isupov, V. I. Mokeev, S. A. Savkin, V. V. Chistyakova
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Chistyakova","doi":"10.3103/S0027134924700577","DOIUrl":null,"url":null,"abstract":"<p>In this work, a method for evaluating the cross sections of electroproduction of <span>\\(K^{+}\\Lambda^{0}\\)</span> and <span>\\(K^{+}\\Sigma^{0}\\)</span> off protons in the region of invariant masses of final hadrons <span>\\(M_{K}+M_{Y}<W<2.65\\)</span> GeV (<span>\\(M_{K}\\)</span> and <span>\\(M_{Y}\\)</span> being the masses of the kaon and hyperon, respectively) and squares of four-momentum transfers of virtual photons, i.e., photon virtualities <span>\\(0<Q^{2}<5\\)</span> GeV<span>\\({}^{2}\\)</span>, is developed based on experimental data of these exclusive channels’ cross sections measured by the CLAS detector in Hall B at Jefferson Lab. A set of algorithms has been implemented to evaluate the differential cross sections of these channels, along with their statistical and systematic uncertainties. A program was developed for the evaluation of differential cross sections and structure functions using C++ and Python libraries. An interactive website was created for working with the program, enabling the analysis of one-dimensional and two-dimensional dependences of structure functions and differential cross sections. The evaluation of differential cross sections for the <span>\\(K^{+}\\Lambda\\)</span> and <span>\\(K^{+}\\Sigma^{0}\\)</span> electroproduction channels is necessary for extracting the structure function <span>\\(\\sigma_{LT^{\\prime}}\\)</span> from the data on the polarization asymmetry of electroproduction reactions of these final states with longitudinally polarized electrons. The obtained results are also important for the development of realistic Monte Carlo event generators in planning future experiments and for evaluating the efficiency of detecting final particles when extracting reaction cross sections from experimental data.</p>","PeriodicalId":711,"journal":{"name":"Moscow University Physics Bulletin","volume":"79 4","pages":"450 - 461"},"PeriodicalIF":0.4000,"publicationDate":"2024-10-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Cross Section Evaluation for Exclusive Channels of \\\\(\\\\boldsymbol{K}^{\\\\boldsymbol{+}}\\\\boldsymbol{\\\\Lambda}\\\\) and \\\\(\\\\boldsymbol{K}^{\\\\boldsymbol{+}}\\\\boldsymbol{\\\\Sigma}^{\\\\boldsymbol{0}}\\\\) Electroproduction off Protons Using CLAS Detector Data\",\"authors\":\"A. V. Golda, A. A. Golubenko, M. M. Davydov, E. L. Isupov, V. I. Mokeev, S. A. Savkin, V. V. 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引用次数: 0
摘要
在这项工作中,有一种方法可以评估在最终强子的不变质量 \(M_{K}+M_{Y}<W<2.65)GeV(\(M_{K}\)和\(M_{Y}\)分别是kaon和hyperon的质量)和虚光子四动量转移的平方,即、光子虚拟性 \(0<Q^{2}<5\) GeV\({}^{2}\) 是根据杰斐逊实验室B大厅的CLAS探测器测量到的这些专属信道截面的实验数据开发的。我们采用了一套算法来评估这些信道的差分截面及其统计和系统不确定性。使用 C++ 和 Python 库开发了一个程序,用于评估微分截面和结构函数。为使用该程序创建了一个交互式网站,以便分析结构函数和微分截面的一维和二维依赖关系。为了从这些最终态与纵向极化电子的电生化反应的极化不对称数据中提取结构函数\(\sigma_{LT^{\prime}}\),必须对\(K^{+}\Lambda\)和\(K^{+}\Sigma^{0}\)电生化通道的微分截面进行评估。获得的结果对于在规划未来实验时开发现实的蒙特卡洛事件发生器,以及在从实验数据中提取反应截面时评估探测最终粒子的效率也非常重要。
Cross Section Evaluation for Exclusive Channels of \(\boldsymbol{K}^{\boldsymbol{+}}\boldsymbol{\Lambda}\) and \(\boldsymbol{K}^{\boldsymbol{+}}\boldsymbol{\Sigma}^{\boldsymbol{0}}\) Electroproduction off Protons Using CLAS Detector Data
In this work, a method for evaluating the cross sections of electroproduction of \(K^{+}\Lambda^{0}\) and \(K^{+}\Sigma^{0}\) off protons in the region of invariant masses of final hadrons \(M_{K}+M_{Y}<W<2.65\) GeV (\(M_{K}\) and \(M_{Y}\) being the masses of the kaon and hyperon, respectively) and squares of four-momentum transfers of virtual photons, i.e., photon virtualities \(0<Q^{2}<5\) GeV\({}^{2}\), is developed based on experimental data of these exclusive channels’ cross sections measured by the CLAS detector in Hall B at Jefferson Lab. A set of algorithms has been implemented to evaluate the differential cross sections of these channels, along with their statistical and systematic uncertainties. A program was developed for the evaluation of differential cross sections and structure functions using C++ and Python libraries. An interactive website was created for working with the program, enabling the analysis of one-dimensional and two-dimensional dependences of structure functions and differential cross sections. The evaluation of differential cross sections for the \(K^{+}\Lambda\) and \(K^{+}\Sigma^{0}\) electroproduction channels is necessary for extracting the structure function \(\sigma_{LT^{\prime}}\) from the data on the polarization asymmetry of electroproduction reactions of these final states with longitudinally polarized electrons. The obtained results are also important for the development of realistic Monte Carlo event generators in planning future experiments and for evaluating the efficiency of detecting final particles when extracting reaction cross sections from experimental data.
期刊介绍:
Moscow University Physics Bulletin publishes original papers (reviews, articles, and brief communications) in the following fields of experimental and theoretical physics: theoretical and mathematical physics; physics of nuclei and elementary particles; radiophysics, electronics, acoustics; optics and spectroscopy; laser physics; condensed matter physics; chemical physics, physical kinetics, and plasma physics; biophysics and medical physics; astronomy, astrophysics, and cosmology; physics of the Earth’s, atmosphere, and hydrosphere.