Measurement of the Λ0b→ J/ψΛ angular distribution and the Λ0b polarisation in pp collisions

Measurement of the Λ0b→ J/ψΛ angular distribution and the Λ0b polarisation in pp collisions

Bibliographic Details
Parent link:	Journal of High Energy Physics Vol. 2020, iss. 6.— 2020.— [110, 29 p.]
Corporate Authors:	Национальный исследовательский Томский политехнический университет Исследовательская школа физики высокоэнергетических процессов, Национальный исследовательский Томский политехнический университет Инженерная школа информационных технологий и робототехники Отделение автоматизации и робототехники (ОАР)
Other Authors:	Aaij R. Roel, Beteta C. A. Carlos Abellan, Ackernley T., Adeva B. Bernardo, Eydelman S. I. Semen Isaakovich, Kharisova A. E. Anastasiya Evgenjevna, Panshin G. L. Gennady Leonidovich
Summary:	Title screen This paper presents an analysis of the Λ0b→ J/ψΛ angular distribution and the transverse production polarisation of Λ0bΛb0 baryons in proton-proton collisions at centre-of-mass energies of 7, 8 and 13 TeV. The measurements are performed using data corresponding to an integrated luminosity of 4.9 fb−1, collected with the LHCb experiment. The polarisation is determined in a fiducial region of Λ0bΛb0 transverse momentum and pseudorapidity of 1 < pT < 20 GeV/c and 2 < η < 5, respectively. The data are consistent with Λ0bΛb0 baryons being produced unpolarised in this region. The parity-violating asymmetry parameter of the Λ → pπ− decay is also determined from the data and its value is found to be consistent with a recent measurement by the BES III collaboration.
Published:	2020
Subjects:	электронный ресурс труды учёных ТПУ B physics Heavy quark production Flavor physics Hadron-Hadron scattering (experiments) Polarization
Online Access:	https://doi.org/10.1007/JHEP06(2020)110
Format:	Electronic Book Chapter
KOHA link:	https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=664636

Internet

https://doi.org/10.1007/JHEP06(2020)110