Observation of the semileptonic decay B+→pp¯¯¯μ+νμ

Observation of the semileptonic decay B+→pp¯¯¯μ+νμ

Bibliographic Details
Parent link:Journal of High Energy Physics
Vol. 2020, iss. 3.— 2020.— [146, 21 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, Kharisova A. E. Anastasiya Evgenjevna, Panshin G. L. Gennady Leonidovich, Strokov S. A. Sergey Aleksandrovich
Summary:Title screen
The Cabibbo-suppressed semileptonic decay B+→pp¯¯¯μ+νμB+→pp¯μ+νμ is observed for the first time using a sample of pp collisions corresponding to an integrated luminosity of 1.0, 2.0 and 1.7 fb−1 at centre-of-mass energies of 7, 8 and 13 TeV, respectively. The differential branching fraction is measured as a function of the pp¯¯¯pp¯ invariant mass using the decay mode B+→ J/ψK+ for normalisation. The total branching fraction is measured to beB(B+→pp¯¯¯μ+νμ)=(5.27+0.23−0.24±0.21±0.15)×10−6,B(B+→pp¯μ+νμ)=(5.27−0.24+0.23±0.21±0.15)×10−6,where the first uncertainty is statistical, the second systematic and the third is from the uncertainty on the branching fraction of the normalisation channel.
Published: 2020
Subjects:
электронный ресурс
труды учёных ТПУ
B physics
branching fraction
flavor physics
Hadron-Hadron scattering (experiments)
Online Access:https://doi.org/10.1007/JHEP03(2020)146
Format: Electronic Book Chapter
KOHA link:https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=662339

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