Title:
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Measurement of CP Violation in the Phase Space of B±→K±π+π− and B±→K±K+K− Decays
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Author:
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Calvo Gómez, Míriam; Camboni, Alessandro; Vilasís Cardona, Xavier; LHCb Collaboration - CERN
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Other authors:
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Universitat Ramon Llull. La Salle; CERN |
Abstract:
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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. |
Publication date:
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2013-09-03 |
Subject (UDC):
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53 - Física |
Subject(s):
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Gran col·lisionador d'hadrons (França i Suïssa) Partícules (Física nuclear) |
Rights:
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L'accés als continguts d'aquest document queda condicionat a l'acceptació de les condicions d'ús establertes per la següent llicència Creative Commons:http://creativecommons.org/licenses/by/4.0/
© CERN |
Pages:
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9 p. |
Document type:
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Article Article - Published version |
DOI:
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https://doi.org/10.1103/PhysRevLett.111.101801
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Published by:
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American Physical Society
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Publish at:
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Physical Review Letters, 2013, Vol. 111, No. 10 (Setembre)
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