TY  - JOUR
AU  - LHCb Collaboration (Aaij, R. et al
AU  - Henry, L.
AU  - Jashal, B. K.
AU  - Martinez-Vidal, F.
AU  - Oyanguren, A.
AU  - Remon Alepuz, C.
AU  - Ruiz Vidal, J.
PY  - 2021
DA  - 2021//
TI  - Measurement of CP Violation in the Decay B plus -> K+ pi(0)
T2  - Phys. Rev. Lett.
JO  - Physical Review Letters
SP  - 091802
EP  - 11pp
VL  - 126
IS  - 9
PB  - Amer Physical Soc
AB  - A measurement of CP violation in the decay B+ -> K+pi(0) is reported using data corresponding to an integrated luminosity of 5.4 fb- 1 collected with the LHCb experiment at a center-of-mass energy of root s = 13 TeV. The CP asymmetry is measured to be 0.025 +/- 0.015 +/- 0.006 +/- 0.003, where the uncertainties are statistical, systematic, and due to an external input. This is the most precise measurement of this quantity. It confirms and significantly enhances the observed anomalous difference between the direct CP asymmetries of the B-0 -> K+pi(-) and B+ -> K+pi 0 decays, known as the K pi puzzle.
SN  - 0031-9007
UR  - https://arxiv.org/abs/2012.12789
UR  - https://doi.org/10.1103/PhysRevLett.126.091802
DO  - 10.1103/PhysRevLett.126.091802
LA  - English
N1  - WOS:000627616700004
ID  - LHCbCollaborationAaij_etal2021
ER  -