$First branching fraction measurement of the suppressed decay Ξ0c→π−Λ+c$

First branching fraction measurement of the suppressed decay Ξ0c→π−Λ+c

Bibliografiska uppgifter
Parent link:	Physical Review D: particles, fields, gravitation, and cosmology Vol. 102, iss. 7.— 2020.— [071101, 11 p.]
Institutionella upphovsmän:	Национальный исследовательский Томский политехнический университет Инженерная школа информационных технологий и робототехники Отделение автоматизации и робототехники (ОАР), Национальный исследовательский Томский политехнический университет Исследовательская школа физики высокоэнергетических процессов
Övriga upphovsmän:	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
Sammanfattning:	Title screen The Ξ0c baryon is unstable and usually decays into charmless final states by the c→su¯d transition. It can, however, also disintegrate into a π− meson and a Λ+c baryon via s quark decay or via cs→dc weak scattering. The interplay between the latter two processes governs the size of the branching fraction B(Ξ0c→π−Λ+c), first measured here to be (0.55±0.02±0.18)%, where the first uncertainty is statistical and second systematic. This result is compatible with the larger of the theoretical predictions that connect models of hyperon decays using partially conserved axial currents and SU(3) symmetry with those involving the heavy-quark expansion and heavy-quark symmetry. In addition, the branching fraction of the normalization channel, B(Ξ+c→pK−π+)=(1.135±0.002±0.387)% is measured.
Språk:	engelska
Publicerad:	2020
Ämnen:	электронный ресурс труды учёных ТПУ
Länkar:	https://doi.org/10.1103/PhysRevD.102.071101
Materialtyp:	Elektronisk Bokavsnitt
KOHA link:	https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=664692

Internet

https://doi.org/10.1103/PhysRevD.102.071101