Measurement of the Λb polarization and angular parameters in Λb →j /ψ Λ decays from pp collisions at s =7 and 8 TeV MEASUREMENT of the Λb POLARIZATION ⋯ A. M. SIRUNYAN et al.
An analysis of the bottom baryon decay Λb → J=ψð→ μþμ−ÞΛð→ pπ−Þ is performed to measure the Λb polarization and three angular parameters in data from pp collisions at ffiffi s p ¼ 7 and 8 TeV, collected by the CMS experiment at the Large Hadron Collider. The Λb polarization is measured to be 0.0...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English English |
| Published: |
American Physical Society
2018
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| Subjects: | |
| Online Access: | http://irep.iium.edu.my/65579/ http://irep.iium.edu.my/65579/1/65579_Measurement%20of%20the%20%CE%9Bb%20polarization_article.pdf http://irep.iium.edu.my/65579/2/65579_Measurement%20of%20the%20%CE%9Bb%20polarization_scopus.pdf |
| _version_ | 1848786412750503936 |
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| author | Sirunyan, A. M. Tumasyan, A. R. Adam, Wolfgang Ambrogi, Federico Asilar, Ece Md. Ali, Mohd. Adli |
| author_facet | Sirunyan, A. M. Tumasyan, A. R. Adam, Wolfgang Ambrogi, Federico Asilar, Ece Md. Ali, Mohd. Adli |
| author_sort | Sirunyan, A. M. |
| building | IIUM Repository |
| collection | Online Access |
| description | An analysis of the bottom baryon decay Λb → J=ψð→ μþμ−ÞΛð→ pπ−Þ is performed to measure
the Λb polarization and three angular parameters in data from pp collisions at ffiffi
s p ¼ 7 and 8 TeV,
collected by the CMS experiment at the Large Hadron Collider. The Λb polarization is measured to be
0.00 0.06ðstatÞ 0.06ðsystÞ and the parity-violating asymmetry parameter is determined to be
0.14 0.14ðstatÞ 0.10ðsystÞ. The measurements are compared to various theoretical predictions,
including those from perturbative quantum chromodynamics. |
| first_indexed | 2025-11-14T17:08:38Z |
| format | Article |
| id | iium-65579 |
| institution | International Islamic University Malaysia |
| institution_category | Local University |
| language | English English |
| last_indexed | 2025-11-14T17:08:38Z |
| publishDate | 2018 |
| publisher | American Physical Society |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | iium-655792019-04-11T09:02:50Z http://irep.iium.edu.my/65579/ Measurement of the Λb polarization and angular parameters in Λb →j /ψ Λ decays from pp collisions at s =7 and 8 TeV MEASUREMENT of the Λb POLARIZATION ⋯ A. M. SIRUNYAN et al. Sirunyan, A. M. Tumasyan, A. R. Adam, Wolfgang Ambrogi, Federico Asilar, Ece Md. Ali, Mohd. Adli Q Science (General) QC Physics An analysis of the bottom baryon decay Λb → J=ψð→ μþμ−ÞΛð→ pπ−Þ is performed to measure the Λb polarization and three angular parameters in data from pp collisions at ffiffi s p ¼ 7 and 8 TeV, collected by the CMS experiment at the Large Hadron Collider. The Λb polarization is measured to be 0.00 0.06ðstatÞ 0.06ðsystÞ and the parity-violating asymmetry parameter is determined to be 0.14 0.14ðstatÞ 0.10ðsystÞ. The measurements are compared to various theoretical predictions, including those from perturbative quantum chromodynamics. American Physical Society 2018-04-01 Article PeerReviewed application/pdf en http://irep.iium.edu.my/65579/1/65579_Measurement%20of%20the%20%CE%9Bb%20polarization_article.pdf application/pdf en http://irep.iium.edu.my/65579/2/65579_Measurement%20of%20the%20%CE%9Bb%20polarization_scopus.pdf Sirunyan, A. M. and Tumasyan, A. R. and Adam, Wolfgang and Ambrogi, Federico and Asilar, Ece and Md. Ali, Mohd. Adli (2018) Measurement of the Λb polarization and angular parameters in Λb →j /ψ Λ decays from pp collisions at s =7 and 8 TeV MEASUREMENT of the Λb POLARIZATION ⋯ A. M. SIRUNYAN et al. Physical Review D, 97 (7). pp. 1-19. ISSN 2470-0010 E-ISSN 2470-0029 https://journals.aps.org/prd/pdf/10.1103/PhysRevD.97.072010 10.1103/PhysRevD.97.072010 |
| spellingShingle | Q Science (General) QC Physics Sirunyan, A. M. Tumasyan, A. R. Adam, Wolfgang Ambrogi, Federico Asilar, Ece Md. Ali, Mohd. Adli Measurement of the Λb polarization and angular parameters in Λb →j /ψ Λ decays from pp collisions at s =7 and 8 TeV MEASUREMENT of the Λb POLARIZATION ⋯ A. M. SIRUNYAN et al. |
| title | Measurement of the Λb polarization and angular parameters in Λb →j /ψ Λ decays from pp collisions at s =7 and 8 TeV MEASUREMENT of the Λb POLARIZATION ⋯ A. M. SIRUNYAN et al. |
| title_full | Measurement of the Λb polarization and angular parameters in Λb →j /ψ Λ decays from pp collisions at s =7 and 8 TeV MEASUREMENT of the Λb POLARIZATION ⋯ A. M. SIRUNYAN et al. |
| title_fullStr | Measurement of the Λb polarization and angular parameters in Λb →j /ψ Λ decays from pp collisions at s =7 and 8 TeV MEASUREMENT of the Λb POLARIZATION ⋯ A. M. SIRUNYAN et al. |
| title_full_unstemmed | Measurement of the Λb polarization and angular parameters in Λb →j /ψ Λ decays from pp collisions at s =7 and 8 TeV MEASUREMENT of the Λb POLARIZATION ⋯ A. M. SIRUNYAN et al. |
| title_short | Measurement of the Λb polarization and angular parameters in Λb →j /ψ Λ decays from pp collisions at s =7 and 8 TeV MEASUREMENT of the Λb POLARIZATION ⋯ A. M. SIRUNYAN et al. |
| title_sort | measurement of the λb polarization and angular parameters in λb →j /ψ λ decays from pp collisions at s =7 and 8 tev measurement of the λb polarization ⋯ a. m. sirunyan et al. |
| topic | Q Science (General) QC Physics |
| url | http://irep.iium.edu.my/65579/ http://irep.iium.edu.my/65579/ http://irep.iium.edu.my/65579/ http://irep.iium.edu.my/65579/1/65579_Measurement%20of%20the%20%CE%9Bb%20polarization_article.pdf http://irep.iium.edu.my/65579/2/65579_Measurement%20of%20the%20%CE%9Bb%20polarization_scopus.pdf |