Measurement of the Λ0b→ J/ψΛ angular distribution and the Λ0b polarisation in pp collisions; Journal of High Energy Physics; Vol. 2020, iss. 6

Measurement of the Λ0b→ J/ψΛ angular distribution and the Λ0b polarisation in pp collisions; Journal of High Energy Physics; Vol. 2020, iss. 6

Bibliografski detalji
Parent link:Journal of High Energy Physics
Vol. 2020, iss. 6.— 2020.— [110, 29 p.]
Autori kompanije: Национальный исследовательский Томский политехнический университет Исследовательская школа физики высокоэнергетических процессов, Национальный исследовательский Томский политехнический университет Инженерная школа информационных технологий и робототехники
Daljnji autori: 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
Sažetak: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.
Jezik:engleski
Izdano: 2020
Teme:
электронный ресурс
труды учёных ТПУ
B physics
Heavy quark production
Flavor physics
Hadron-Hadron scattering (experiments)
Polarization
Online pristup:https://doi.org/10.1007/JHEP06(2020)110
Format: Elektronički Poglavlje knjige
KOHA link:https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=664636

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