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oai:recercat.cat:20.500.14342/33082026-03-11T00:15:17Zcom_2072_482405com_2072_183628col_2072_482415

00925njm 22002777a 4500 dc Calvo Gomez, Miriam author Camboni, Alessandro author Vilasis-Cardona, Xavier author LHCb Collaboration - CERN author 2013-09-03 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. http://hdl.handle.net/20.500.14342/3308 https://doi.org/10.1103/PhysRevLett.111.101801 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