Observation of the decay B¯0s→χc2K+K−B¯s0→χc2K+K− in the ϕ mass region

Observation of the decay B¯0s→χc2K+K−B¯s0→χc2K+K− in the ϕ mass region

Bibliographic Details
Parent link:	Journal of High Energy Physics № 8.— 2018.— [191, 20 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, Adeva B. Bernardo, Adinolfi M. Marco, Panshin G. L. Gennady Leonidovich, Strokov S. A. Sergey Aleksandrovich, Vagner A. R. Aleksandr Rudolfovich
Summary:	Title screen The B¯¯¯¯0s→χc2K+K−B¯s0→χc2K+K− decay mode is observed and its branching fraction relative to the corresponding χc1 decay mode, in a ±15 MeV/c2 window around the ϕ mass, is found to beB(B¯¯¯¯0s→χc2K+K−)B(B¯¯¯¯0s→χc1K+K−)=(17.1±3.1±0.4±0.9)%,B(B¯s0→χc2K+K−)B(B¯s0→χc1K+K−)=(17.1±3.1±0.4±0.9)%,where the first uncertainty is statistical, the second systematic and the third due to the knowledge of the branching fractions of radiative χc decays. The decay mode B¯¯¯¯0s→χc1K+K−B¯s0→χc1K+K−allows the B s 0 mass to be measured asm(B0s)=5366.83±0.25±0.27 MeV/c2,m(Bs0)=5366.83±0.25±0.27 MeV/c2,where the first uncertainty is statistical and the second systematic. A combination of this result with other LHCb determinations of the B s 0 mass is made.
Published:	2018
Subjects:	электронный ресурс труды учёных ТПУ физика адронное взаимодействие
Online Access:	http://earchive.tpu.ru/handle/11683/57781 https://doi.org/10.1007/JHEP08(2018)191
Format:	Electronic Book Chapter
KOHA link:	https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=658802

Internet

http://earchive.tpu.ru/handle/11683/57781
https://doi.org/10.1007/JHEP08(2018)191