Journal
PHYSICAL REVIEW D
Volume 84, Issue 2, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevD.84.021101
Keywords
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Funding
- MEXT
- JSPS
- Nagoya's TLPRC (Japan)
- ARC
- DIISR (Australia)
- NSFC (China)
- MSMT (Czechia)
- DST (India)
- MEST
- NRF
- NSDC of KISTI
- WCU (Korea)
- MNiSW (Poland)
- MES
- RFAAE (Russia)
- ARRS (Slovenia)
- SNSF (Switzerland)
- NSC
- MOE (Taiwan)
- DOE (USA)
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We report results on time-dependent CP asymmetries in B -> D*(-/+)pi(+/-) decays based on a data sample containing 657 x 10(6) B (B) over bar pairs collected with the Belle detector at the KEKB asymmetric-energy e(+)e(-) collider at the Y(4S) resonance. We use a partial reconstruction technique, wherein signal B -> D*(-/+)pi(+/-) events are identified using information only from the fast pion from the B decay and the slow pion from the subsequent decay of the D*(-/+), where the former (latter) corresponds to D*(+)(D*(-)) final states. We obtain CP violation parameters S+ = +0.061 +/- 0.018 (stat) +/- 0.012 (syst) and S- = +0.031 +/- 0.019 (stat) +/- 0.015 (syst).
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