Amplitude analysis of d-s(+) -> pi(+)pi(0)eta and first observation of the w-annihilation dominant decays d-s(+) -> a(0)(980)(+)pi(0) and d-s(+) -> a(0)(980)(0)pi(+)

2023-03-272023-03-272019-09-12Ablikim, M. vd. (2019). ''Amplitude analysis of d-s(+) -> pi(+)pi(0)eta and first observation of the w-annihilation dominant decays d-s(+) -> a(0)(980)(+)pi(0) and d-s(+) -> a(0)(980)(0)pi(+)''. Physical Review Letters, 123(11).0031-90071079-7114https://doi.org/10.1103/PhysRevLett.123.112001https://journals.aps.org/prl/abstract/10.1103/PhysRevLett.123.112001http://hdl.handle.net/11452/31750Çalışmada 447 yazar bulunmaktadır. Bu yazarlardan sadece Bursa Uludağ Üniversitesi mensuplarının girişleri yapılmıştır.We present the first amplitude analysis of the decay D-s(+) -> pi(+)pi(0)eta. We use an e(+)e(-) collision data sample corresponding to an integrated luminosity of 3.19 fb(-1) collected with the BESIII detector at a center-of-mass energy of 4.178 GeV. We observe for the first time the W-annihilation dominant decays D-s(+) -> a(0)(980)(+)pi(0) and D-s(+) -> a(0)(980)(0)pi(+). We measure the absolute branching fraction B(D-s(+) -> a(0)(980)(+(0))pi(0(+)), a(0)(980)(+(0)) -> pi(+(0))eta = (1.46 +/- 0.15(stat) +/- 0.23 sys)%, which is larger than the branching fractions of other measured pure W-annihilation decays by at least one order of magnitude. In addition, we measure the branching fraction of D-s(+) -> pi(+)pi(0)eta with significantly improved precision.eninfo:eu-repo/semantics/openAccessPhysicsAtomic physicsA-centerAbsolute branching fractionsAmplitude analysisBranching fractionsData sampleIntegrated luminosityAmplitude analysis of d-s(+) -> pi(+)pi(0)eta and first observation of the w-annihilation dominant decays d-s(+) -> a(0)(980)(+)pi(0) and d-s(+) -> a(0)(980)(0)pi(+)Article0004853150000042-s2.0-850727250121231131573268Physics, multidisciplinaryCP Violation; Deterioration; CKM MatrixArticleDestructionLuminancePhysics