Measurement of the Λb polarization and angular parameters in Λb→J/ψΛ decays from pp collisions at √s=7 and 8 TeV

Please use this identifier to cite or link to this item: http://dr.iiserpune.ac.in:8080/xmlui/handle/123456789/3903

Title:	Measurement of the Λb polarization and angular parameters in Λb→J/ψΛ decays from pp collisions at √s=7 and 8 TeV
Authors:	CMS Collaboration Sirunyan, A. M. CHAUHAN, S. DUBE, SOURABH HEGDE, V. KAPOOR, A. KOTHEKAR, K. PANDEY, S. RANE, A. SHARMA, SEEMA et al. Dept. of Physics
Keywords:	Bottom baryon decay Quantum chromodynamics Parity-violating asymmetry 2018
Issue Date:	Apr-2018
Publisher:	American Physical Society
Citation:	Physical Review D, 97(7), 072010.
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.
URI:	http://dr.iiserpune.ac.in:8080/xmlui/handle/123456789/3903 https://doi.org/10.1103/PhysRevD.97.072010
ISSN:	2470-0010 2470-0029
Appears in Collections:	JOURNAL ARTICLES

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