He XG, Hsueh CL, Shi JQ. Constraints on the phase gamma and new physics from B --> kpi decays.
PHYSICAL REVIEW LETTERS 2000;
84:18-21. [PMID:
11015824 DOI:
10.1103/physrevlett.84.18]
[Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/11/1999] [Revised: 10/15/1999] [Indexed: 05/23/2023]
Abstract
Recent results from CLEO on B-->Kpi indicate that the phase gamma may be substantially different from that obtained from other fit to the KM matrix elements in the standard model. We show that gamma extracted using B-->Kpi,pipi is sensitive to new physics occurring at loop level. It provides a powerful method to probe new physics in electroweak penguin interactions. Using effects due to anomalous gauge couplings as an example, we show that within the allowed ranges for these couplings information about gamma obtained from B-->Kpi,pipi can be very different from the standard model prediction.
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