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https://elib.bsu.by/handle/123456789/260355| 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. |
| Authors: | Chekhovsky, V. Mossolov, V. Gonzalez, Suarez J. CMS Collaboration |
| Keywords: | ЭБ БГУ::ЕСТЕСТВЕННЫЕ И ТОЧНЫЕ НАУКИ::Физика |
| Issue Date: | 2018 |
| Publisher: | American Physical Society |
| Citation: | Phy Rev D 2018;97(7). |
| Abstract: | An analysis of the bottom baryon decay Λb→J/ψ(→μ+μ-)Λ(→pπ-) is performed to measure the Λb polarization and three angular parameters in data from pp collisions at s=7 and 8 TeV, collected by the CMS experiment at the Large Hadron Collider. The Λb polarization is measured to be 0.00±0.06(stat)±0.06(syst) and the parity-violating asymmetry parameter is determined to be 0.14±0.14(stat)±0.10(syst). The measurements are compared to various theoretical predictions, including those from perturbative quantum chromodynamics. |
| Description: | Published by the American Physical Society under the terms of the »https://creativecommons.org/licenses/by/4.0/» Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI. Funded by SCOAP3. |
| URI: | https://elib.bsu.by/handle/123456789/260355 |
| DOI: | 10.1103/PhysRevD.97.072010 |
| Scopus: | 85046806311 |
| Sponsorship: | CERN, for the CMS Collaboration. |
| Appears in Collections: | Статьи НИУ «Институт ядерных проблем» |
Files in This Item:
| File | Description | Size | Format | |
|---|---|---|---|---|
| PhysRevD.97.072010.pdf | 549,05 kB | Adobe PDF | View/Open |
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