Study of CP violating effects in time dependent B0(B0)-->D(*)-/+pi+/- decays期刊界 All Journals 搜尽天下杂志传播学术成果专业期刊搜索期刊信息化学术搜索

*Study of CP violating effects in time dependent B0(B0)-->D()-/+pi+/- decays**

Authors:	Sarangi T R Abe K Abe K Abe T Aihara H Asano Y Aulchenko V Aushev T Bahinipati S Bakich A M Ban Y Banerjee S Bitenc U Bizjak I Blyth S Bondar A Bracko M Browder T E Chang M-C Chang P Chen K-F Cheon B G Chistov R Choi S-K Choi Y Chuvikov A Cole S Danilov M Dash M Dong L Y Drutskoy A Eidelman S Eiges V Fratina S Gabyshev N Garmash A Gershon T Gokhroo G Haba J Hara K Hastings N C Hayashii H Hazumi M Higuchi T Hinz L Hokuue T Hoshi Y Hou W-S Inami K Ishikawa A Ishino H Itoh R Iwasaki H Iwasaki M Kang J H Kang J S Kapusta P Kataoka S U Kawai H Kawasaki T Kichimi H Kim H J Kim H O Kim S K Kim T H

Affiliation:	High Energy Accelerator Research Organization (KEK), Tsukuba.

Abstract:	We report measurements of time dependent decay rates for B0(B(0))-->D(()-/+)pi(+/-) decays and extraction of CP violation parameters containing phi(3). Using fully reconstructed D(())pi events from a 140 fb(-1) data sample collected at the Upsilon(4S) resonance, we obtain the CP violation parameters for D()pi and Dpi decays, 2R(D(())pi)sin((2phi(1)+phi(3)+/-delta(D(())pi)), where R(D(())pi) is the ratio of the magnitudes of the doubly Cabibbo-suppressed and Cabibbo-favored amplitudes, and delta(D(())pi) is the strong phase difference between them. Under the assumption of delta(D(())pi) being close to either 0 degrees or 180 degrees, we obtain \|2R(D(*)pi)sin((2phi(1)+phi(3))\|=0.060+/-0.040(stat)+/-0.019(syst) and \|2R(Dpi)sin((2phi(1)+phi(3))\|=0.061+/-0.037(stat)+/-0.018(syst).

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