Observation of the decay Λ b 0  → ψ(2S)pπ−; Journal of High Energy Physics; № 8

Observation of the decay Λ b 0  → ψ(2S)pπ−; Journal of High Energy Physics; № 8

Bibliographic Details
Parent link:Journal of High Energy Physics
№ 8.— 2018.— [131, 19 p.]
Corporate Authors: Национальный исследовательский Томский политехнический университет Исследовательская школа физики высокоэнергетических процессов, Национальный исследовательский Томский политехнический университет Инженерная школа информационных технологий и робототехники
Other Authors: Aaij R. Roel, Adeva B. Bernardo, Adinolfi M. Marco, Aidala C. A. Christine, Panshin G. L. Gennady Leonidovich, Strokov S. A. Sergey Aleksandrovich, Vagner A. R. Aleksandr Rudolfovich
Summary:Title screen
The Cabibbo-suppressed decay Λ b 0  → ψ(2S)pπ− is observed for the first time using a data sample collected by the LHCb experiment in proton-proton collisions corresponding to 1.0, 2.0 and 1.9 fb−1 of integrated luminosity at centre-of-mass energies of 7, 8 and 13 TeV, respectively. The ψ(2S) mesons are reconstructed in the μ+μ− final state. The branching fraction with respect to that of the Λ b 0  → ψ(2S)pK− decay mode is measured to beB(Λ0b→ψ(2S)pπ−)B(Λ0b→ψ(2S)pK−)=(11.4±1.3±0.2)%,B(Λb0→ψ(2S)pπ−)B(Λb0→ψ(2S)pK−)=(11.4±1.3±0.2)%,where the first uncertainty is statistical and the second is systematic. The ψ(2S)p and ψ(2S)π−mass spectra are investigated and no evidence for exotic resonances is found.
Language:English
Published: 2018
Subjects:
электронный ресурс
труды учёных ТПУ
физика
адронное взаимодействие
Online Access:http://earchive.tpu.ru/handle/11683/57710
https://doi.org/10.1007/JHEP08(2018)131
Format: Electronic Book Chapter
KOHA link:https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=658997

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