Search for CP violation and observation of P violation in Λ0b→pπ−π+π− decays; Physical Review D; Vol. 102, iss. 5

Search for CP violation and observation of P violation in Λ0b→pπ−π+π− decays

Opis bibliograficzny
Parent link:Physical Review D: particles, fields, gravitation, and cosmology
Vol. 102, iss. 5.— 2020.— [051101, 12 p.]
organizacja autorów: 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
Kolejni autorzy: 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
Streszczenie:Title screen
A search for CP violation in the Λ0b→pπ−π+π− decay is performed using LHCb data corresponding to an integrated luminosity of 6.6  fb−1 collected in pp collisions at center-of-mass energies of 7, 8 and 13 TeV. The analysis uses both triple product asymmetries and the unbinned energy test method. The highest significances of CP asymmetry are 2.9 standard deviations from triple product asymmetries and 3.0 standard deviations for the energy test method. Once the global p-value is considered, all results are consistent with no CP violation. Parity violation is observed at a significance of 5.5 standard deviations for the triple product asymmetry method and 5.3 standard deviations for the energy test method. The reported deviations are given in regions of phase space.
Język:angielski
Wydane: 2020
Hasła przedmiotowe:
электронный ресурс
труды учёных ТПУ
Dostęp online:https://doi.org/10.1103/PhysRevD.102.051101
Format: Elektroniczne Rozdział
KOHA link:https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=664693

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