Observation of the doubly Cabibbo-suppressed decay Ξ+c → pϕ

Observation of the doubly Cabibbo-suppressed decay Ξ+c → pϕ

Bibliographic Details
Parent link:	Journal of High Energy Physics Vol. 2019, iss. 4.— 2019.— [84, 17 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, Adeva B. Bernardo, Shapkin M. M. Mikhail Mikhaylovich, Panshin G. L. Gennady Leonidovich, Strokov S. A. Sergey Aleksandrovich
Summary:	Title screen The doubly Cabibbo-suppressed decay Ξ+c → pϕ with ϕ → K+K− is observed for the first time, with a statistical significance of more than fifteen standard deviations. The data sample used in this analysis corresponds to an integrated luminosity of 2 fb−1 recorded with the LHCb detector in pp collisions at a centre-of-mass energy of 8 TeV. The ratio of branching fractions between the decay Ξ+c → pϕ and the singly Cabibbo-suppressed decay Ξ+c → pK−π+ is measured to beB(Ξ+c→pϕ)B(Ξ+c→pK−π+)=(19.8±0.7±0.9±0.2)×10−3,B(Ξc+→pϕ)B(Ξc+→pK−π+)=(19.8±0.7±0.9±0.2)×10−3,where the first uncertainty is statistical, the second systematic and the third due to the knowledge of the ϕ → K+K− branching fraction.
Language:	English
Published:	2019
Subjects:	электронный ресурс труды учёных ТПУ charm physics Flavor physics Hadron-Hadron scattering (experiments) Branching fraction
Online Access:	https://doi.org/10.1007/JHEP04(2019)084
Format:	Electronic Book Chapter
KOHA link:	https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=663383

Internet

https://doi.org/10.1007/JHEP04(2019)084