Full metadata record
DC Field | Value | Language |
---|---|---|
dc.contributor.author | 천병구 | - |
dc.date.accessioned | 2018-04-03T00:33:19Z | - |
dc.date.available | 2018-04-03T00:33:19Z | - |
dc.date.issued | 2013-02 | - |
dc.identifier.citation | Physical Review D, 2013, 87(3), 31103 | en_US |
dc.identifier.issn | 1550-7998 | - |
dc.identifier.uri | https://journals.aps.org/prd/abstract/10.1103/PhysRevD.87.031103 | - |
dc.description.abstract | We report measurements of the branching fractions and direct CP asymmetries (A(CP)) for B -> K pi, pi pi and KK decays (but not pi(0) pi(0)) based on the final data sample of 772 x 10(6) B (B) over bar pairs collected at the Y(4S) resonance with the Belle detector at the KEKB asymmetric-energy e(+)e(-) collider. We set a 90% confidence-level upper limit for K+K- at 2.0 x 10(-7); all other decays are observed with branching fractions ranging from 10(-6) to 10(-5). In the B-0/(B) over bar (0) -> K-+/-pi(-/+) mode, we confirm Belle's previously reported large A(CP) with a value of -0.069 +/- 0.014 +/- 0.007 and a significance of 4.4 sigma. For all other flavor-specific modes, we find A(CP) values consistent with zero, including A(CP)(K+pi(0)) = +0.043 +/- 0.024 +/- 0.007 with 1.8 sigma significance. The difference of CP asymmetry between B-+/- -> K-+/- pi(0) and B-0/(B) over bar (0) K-+/-pi(-/+) is found to be Delta A(K pi) equivalent to A(CP)(K+pi(0)) - A(CP)(K+pi(-)) = +0.112 +/- 0.027 +/- 0.007 with 4.0 sigma significance. We also calculate the ratios of partial widths for the B -> K pi decays. Using our results, we test the validity of the sum rule A(CP)(K+pi(-)) + A(CP)(K-0 pi(+)) Gamma(K-0 pi(+))/Gamma(K+pi(-)) - A(CP)(K+pi(0))2 Gamma(K+pi(0))/Gamma(K+pi(-)) - A(CP)(K-0 pi(0))2 Gamma(K-0 pi(0))/Gamma(K+pi(-)) =0 and obtain a sum of -0.270 +/- 0.132 +/- 0.060 with 1:9 sigma significance. DOI: 10.1103/PhysRevD.87.031103 | en_US |
dc.description.sponsorship | We thank the KEKB group for excellent operation of the accelerator; the KEK cryogenics group for efficient solenoid operations; and the KEK computer group, the NII, and PNNL/EMSL for valuable computing and SINET4 network support. We acknowledge support from MEXT, JSPS and Nagoya's TLPRC (Japan); ARC and DIISR (Australia); NSFC (China); MSMT (Czechia); DST (India); INFN (Italy); MEST, NRF, GSDC of KISTI, and WCU (Korea); MNiSW (Poland); MES and RFAAE (Russia); ARRS (Slovenia); SNSF (Switzerland); NSC and MOE (Taiwan); and DOE and NSF (USA). | en_US |
dc.language.iso | en | en_US |
dc.publisher | Amer Physical SOC | en_US |
dc.subject | MONTE-CARLO | en_US |
dc.subject | PUZZLE | en_US |
dc.subject | SUPERSYMMETRY | en_US |
dc.subject | VIOLATION | en_US |
dc.subject | PHOTOS | en_US |
dc.title | Measurements of branching fractions and direct CP asymmetries for B -˃ K pi, B -˃ pi pi and B -˃ KK decays | en_US |
dc.type | Article | en_US |
dc.relation.no | 3 | - |
dc.relation.volume | 87 | - |
dc.identifier.doi | 10.1103/PhysRevD.87.031103 | - |
dc.relation.page | 31103-31103 | - |
dc.relation.journal | PHYSICAL REVIEW D | - |
dc.contributor.googleauthor | Duh, Y.-T. | - |
dc.contributor.googleauthor | Wu, T.-Y. | - |
dc.contributor.googleauthor | Chang, P. | - |
dc.contributor.googleauthor | Mohanty, G. B. | - |
dc.contributor.googleauthor | Unno, Y. | - |
dc.contributor.googleauthor | Adachi, I. | - |
dc.contributor.googleauthor | Aihara, H. | - |
dc.contributor.googleauthor | Asner, D. M. | - |
dc.contributor.googleauthor | Aulchenko, V. | - |
dc.contributor.googleauthor | Cheon, B. G. | - |
dc.relation.code | 2013011682 | - |
dc.sector.campus | S | - |
dc.sector.daehak | COLLEGE OF NATURAL SCIENCES[S] | - |
dc.sector.department | DEPARTMENT OF PHYSICS | - |
dc.identifier.pid | bgcheon | - |
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