Study of identified particle ratios using cosmic rays Monte-Carlo models in pp collisions at s=0.9 and 7 TeV
Cosmic rays with high energies can be studied only by measuring the extensive air showers of particles produced in the upper atmosphere. A complete simulation is required to know the primary particle properties, which is possible by studying the modeling of hadronic particle production at the genera...
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| Format: | Article |
| Language: | English |
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Elsevier
2022-12-01
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| Series: | Results in Physics |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2211379722006726 |
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| author | L.-L. Li M. Ajaz A. Atiq M. Atiq M. Waqas M.U. Ashraf A.M. Khubrani M. Adil Khan I.S. Yahia |
| author_facet | L.-L. Li M. Ajaz A. Atiq M. Atiq M. Waqas M.U. Ashraf A.M. Khubrani M. Adil Khan I.S. Yahia |
| author_sort | L.-L. Li |
| collection | DOAJ |
| description | Cosmic rays with high energies can be studied only by measuring the extensive air showers of particles produced in the upper atmosphere. A complete simulation is required to know the primary particle properties, which is possible by studying the modeling of hadronic particle production at the generator level. In this connection, we report the yield ratios π−/π+, K−/K+, p̄/p (same particles ratio), p/π, p/K, and K/π (different particles ratio) with pseudorapidity (η) in pp collisions at s = 0.9 and 7 TeV using models being used for extensive air shower simulation. The ratios were measured at the following transverse momentum (pT) regions; low pT; 0 < pT < 0.8 GeV/c, intermediate pT; 0.8 < pT < 1.2 GeV/c and high pT; pT > 1.2 GeV/c and at different pseudorapidity (η) range of 3.0 < η < 4.5 and 2.5 < η < 4.5. These results are then compared with the data from the LHCb experiment. The ratio of π−/π+ from various model predictions agrees with the measurements at both energies at almost all pT and η regions. There is a reasonable agreement in K−/K+ and p̄/p ratios of model and experimental data at s = 900 GeV except few pT and η regions, in which the models do not describe the experimental data adequately. However, almost all the models fully describe the K−/K+ and p̄/p ratios at s = 7 TeV except few pT and η regions. Moreover, none of the models completely reproduce the different particle ratios at s = 900 GeV, with Pythia and EPOS producing better results. On the other hand, in most cases, the models’ predictions for the different particle ratios are consistent with experimental data s = 7 TeV. These kinds of studies will certainly help tune the Monte-Carlo generators being used for the studies of the hadron productions at various energies. |
| first_indexed | 2024-04-11T14:54:49Z |
| format | Article |
| id | doaj.art-45620b1fb1494be7a30f640b31e072f4 |
| institution | Directory Open Access Journal |
| issn | 2211-3797 |
| language | English |
| last_indexed | 2024-04-11T14:54:49Z |
| publishDate | 2022-12-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Results in Physics |
| spelling | doaj.art-45620b1fb1494be7a30f640b31e072f42022-12-22T04:17:18ZengElsevierResults in Physics2211-37972022-12-0143106058Study of identified particle ratios using cosmic rays Monte-Carlo models in pp collisions at s=0.9 and 7 TeVL.-L. Li0M. Ajaz1A. Atiq2M. Atiq3M. Waqas4M.U. Ashraf5A.M. Khubrani6M. Adil Khan7I.S. Yahia8Department of Basic Sciences, Shanxi Agricultural University, Jinzhong 030801, ChinaDepartment of Physics, Abdul Wali Khan University Mardan, 23200 Mardan, Pakistan; Corresponding authors.Department of Physics, Division of Science and Technology, University of Education, 54770 Lahore, PakistanInstitute of Physics, The Islamia University Bahawalpur, 63100 Bahawalpur, PakistanSchool of Nuclear Science and Technology, University of Chinese Academy of Sciences, Beijing 100049, China; Corresponding authors.National Center for Physics, Shahdra Valley Road, Islamabad 44000, PakistanDepartment of Physics, Faculty of Science, Jazan University, 45142 Jazan, Saudi ArabiaDepartment of Physics, Islamia College Peshawar, 25120 Peshawar, PakistanDepartment of Physics, College of Science, King Khalid University, P.O. Box 9004, Abha 61413, Saudi Arabia; Research Center for Advanced Materials Science (RCAMS), King Khalid University, P.O. Box 9004, Abha 61413, Saudi Arabia; Department of Physics, Faculty of Education, Ain Shams University, Roxy, Cairo, 11757, EgyptCosmic rays with high energies can be studied only by measuring the extensive air showers of particles produced in the upper atmosphere. A complete simulation is required to know the primary particle properties, which is possible by studying the modeling of hadronic particle production at the generator level. In this connection, we report the yield ratios π−/π+, K−/K+, p̄/p (same particles ratio), p/π, p/K, and K/π (different particles ratio) with pseudorapidity (η) in pp collisions at s = 0.9 and 7 TeV using models being used for extensive air shower simulation. The ratios were measured at the following transverse momentum (pT) regions; low pT; 0 < pT < 0.8 GeV/c, intermediate pT; 0.8 < pT < 1.2 GeV/c and high pT; pT > 1.2 GeV/c and at different pseudorapidity (η) range of 3.0 < η < 4.5 and 2.5 < η < 4.5. These results are then compared with the data from the LHCb experiment. The ratio of π−/π+ from various model predictions agrees with the measurements at both energies at almost all pT and η regions. There is a reasonable agreement in K−/K+ and p̄/p ratios of model and experimental data at s = 900 GeV except few pT and η regions, in which the models do not describe the experimental data adequately. However, almost all the models fully describe the K−/K+ and p̄/p ratios at s = 7 TeV except few pT and η regions. Moreover, none of the models completely reproduce the different particle ratios at s = 900 GeV, with Pythia and EPOS producing better results. On the other hand, in most cases, the models’ predictions for the different particle ratios are consistent with experimental data s = 7 TeV. These kinds of studies will certainly help tune the Monte-Carlo generators being used for the studies of the hadron productions at various energies.http://www.sciencedirect.com/science/article/pii/S2211379722006726Identified particles ratiosMC modelspp collisionsLHC energies |
| spellingShingle | L.-L. Li M. Ajaz A. Atiq M. Atiq M. Waqas M.U. Ashraf A.M. Khubrani M. Adil Khan I.S. Yahia Study of identified particle ratios using cosmic rays Monte-Carlo models in pp collisions at s=0.9 and 7 TeV Results in Physics Identified particles ratios MC models pp collisions LHC energies |
| title | Study of identified particle ratios using cosmic rays Monte-Carlo models in pp collisions at s=0.9 and 7 TeV |
| title_full | Study of identified particle ratios using cosmic rays Monte-Carlo models in pp collisions at s=0.9 and 7 TeV |
| title_fullStr | Study of identified particle ratios using cosmic rays Monte-Carlo models in pp collisions at s=0.9 and 7 TeV |
| title_full_unstemmed | Study of identified particle ratios using cosmic rays Monte-Carlo models in pp collisions at s=0.9 and 7 TeV |
| title_short | Study of identified particle ratios using cosmic rays Monte-Carlo models in pp collisions at s=0.9 and 7 TeV |
| title_sort | study of identified particle ratios using cosmic rays monte carlo models in pp collisions at s 0 9 and 7 tev |
| topic | Identified particles ratios MC models pp collisions LHC energies |
| url | http://www.sciencedirect.com/science/article/pii/S2211379722006726 |
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