2026-04-13T07:02:04Zhttps://recercat.cat/oai/requestoai:recercat.cat:20.500.14342/33082026-03-11T00:15:17Zcom_2072_482405com_2072_183628col_2072_482415
RECERCAT
author
Calvo Gomez, Miriam
author
Camboni, Alessandro
author
Vilasis-Cardona, Xavier
author
LHCb Collaboration - CERN
2013-09-03
http://hdl.handle.net/20.500.14342/3308
https://doi.org/10.1103/PhysRevLett.111.101801
The charmless decays B±→K±π+π− and B±→K±K+K− are reconstructed using data, corresponding to an integrated luminosity of 1.0 fb−1, collected by LHCb in 2011. The inclusive charge asymmetries of these modes are measured as ACP(B±→K±π+π−)=0.032±0.008 (stat)±0.004 (syst)±0.007(J/ψK±) and ACP(B±→K±K+K−)=−0.043±0.009 (stat)±0.003 (syst)±0.007(J/ψK±), where the third uncertainty is due to the CP asymmetry of the B±→J/ψK± reference mode. The significance of ACP(B±→K±K+K−) exceeds three standard deviations and is the first evidence of an inclusive CP asymmetry in charmless three-body B decays. In addition to the inclusive CP asymmetries, larger asymmetries are observed in localized regions of phase space.
eng
Attribution 4.0 International © CERN
Gran col·lisionador d'hadrons (França i Suïssa)
Partícules (Física nuclear)
Measurement of CP Violation in the Phase Space of B±→K±π+π− and B±→K±K+K− Decays
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion