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dc.contributor.author천병구-
dc.date.accessioned2018-02-14T04:19:26Z-
dc.date.available2018-02-14T04:19:26Z-
dc.date.issued2011-11-
dc.identifier.citationPhysical Review Letters, NOV 21 2011, 107 22en_US
dc.identifier.issn0031-9007-
dc.identifier.urihttp://journals.aps.org/prl/abstract/10.1103/PhysRevLett.107.221801-
dc.description.abstractWe report the first observation of the doubly Cabibbo-suppressed decays D+ -> K+eta(()'()) using a 791 fb(-1) data sample collected with the Belle detector at the KEKB asymmetric-energy e(+)e(-) collider. The ratio of the branching fractions of doubly Cabibbo-suppressed relative to singly Cabibbo-suppressed D+ -> pi(+)eta(()'()) decays are B(D+ -> K+eta) / B(D+ -> pi(+)eta) =(3.06 +/- 0.43 +/- 0.14)% and B(D+ -> K+eta')/B(D+->pi(+)eta') = (3.77 +/- 0.39 +/- 0.10)%. From these, we find that the relative final-state phase difference between the tree and annihilation amplitudes in D+ decays, delta(TA), is (72 +/- 9)degrees or (288 +/- 9)degrees. We also report the most precise measurements of CP asymmetries to date: A(CP)(D+->pi+eta) = (+1.74 +/- 1.13 +/- 0.19)% and A(CP)(D+->pi+eta') = (-0.12 +/- 1.12 +/- 0.17)%.en_US
dc.description.sponsorshipWe thank the KEKB group for excellent operation of the accelerator, the KEK cryogenics group for efficient solenoid operations, and the KEK computer group and the NII 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); MEST, NRF, NSDC of KISTI, and WCU (Korea); MNiSW (Poland); MES and RFAAE (Russia); ARRS (Slovenia); SNSF (Switzerland); NSC and MOE (Taiwan); and DOE (USA). E. Won acknowledges support by NRF Grant No. 2011-0027652 and B. R. Ko acknowledges support by NRF Grant No. 2011-0025750.en_US
dc.language.isoenen_US
dc.publisherAMER Physical SOCen_US
dc.subjectBELLEen_US
dc.titleObservation of D+ -˃ K+eta(()'()) and Search for CP Violation in D+ -˃ pi(+)eta(()'()) Decaysen_US
dc.typeArticleen_US
dc.relation.no22-
dc.relation.volume107-
dc.relation.page1-6-
dc.relation.journalPHYSICAL REVIEW LETTERS-
dc.contributor.googleauthorWon, Eunil-
dc.contributor.googleauthorAihara, Hiroaki-
dc.contributor.googleauthorNitoh, Osamu-
dc.contributor.googleauthorKim, Sun Kee-
dc.contributor.googleauthorPakhlov, Pavel-
dc.contributor.googleauthorUglov, Timofey-
dc.contributor.googleauthorDanilov, Mikhail-
dc.contributor.googleauthorMizuk, Roman-
dc.contributor.googleauthorChilikin, Kirill-
dc.contributor.googleauthorCheon, B. G.-
dc.relation.code2011207605-
dc.sector.campusS-
dc.sector.daehakCOLLEGE OF NATURAL SCIENCES[S]-
dc.sector.departmentDEPARTMENT OF PHYSICS-
dc.identifier.pidbgcheon-


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