MINISTR ŠKOLSTVÍ KE SPOLUPRÁCI ČR S SÚJV
INTEREST JINR, Wave 6
The passing of Ivo Zvára
Call for the projects solved in collaboration with JINR (Projects 3+3) 
Call for the Grants of the Plenipotentiary of the Government of the Czech Republic in JINR
MEYS
22 October 2021
Czech Ambassador in Russia visited JINR
INTEREST JINR, Wave 5
Russia Visa Centre
9 August 2021
Working Stays CR - JINR 2022Measurement of the Lambda(b) polarization and angular parameters in Lambda(b) -> J/psi Lambda decays from pp collisions at root s=7 and 8 TeV
Author
| Sirunyan A.M. | Yerevan Physics Institute, Armenia |
| Finger Miroslav, prof. Ing. DrSc. | Faculty of Mathematics and Physics, Charles University in Prague |
| Finger Michael, M.Sc. CSc. | Faculty of Mathematics and Physics, Charles University in Prague, JINR Dubna |
| et al. | CMS collaboration |
Year
2018
Scientific journal
Physical Review D, 97 (7), 072010
Web
Abstract
An analysis of the bottom baryon decay Lambda(b) -> J/psi(-> mu(+)mu(-))Lambda( -> p pi(-)) is performed to measure the Lambda(b) polarization and three angular parameters in data from pp collisions at root s = 7 and 8 TeV, collected by the CMS experiment at the Large Hadron Collider. The Lambda(b) 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.
Cite article as:
A. Sirunyan, M. Finger, M. Finger, . et al., "Measurement of the Lambda(b) polarization and angular parameters in Lambda(b) -> J/psi Lambda decays from pp collisions at root s=7 and 8 TeV", Physical Review D, 97 (7), 072010 (2018)