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Measurement of branching fractions of color-suppressed decays of the (b)over-bar(0) meson to d-(*)0 pi(0), d-(*)0 eta, d-(*)0 omega, and d-0 eta '

文献类型：期刊论文

作者Aubert, B; Barate, R; Boutigny, D; Gaillard, JM; Hicheur, A; Karyotakis, Y; Lees, JP; Robbe, P; Tisserand, V; Zghiche, A
刊名Physical review d
出版日期2004-02-01
卷号69期号:3页码:21
ISSN号0556-2821
DOI10.1103/physrevd.69.032004
通讯作者Aubert, b()
英文摘要Using a sample of 88.8x10(6) b (b) over bar events collected with the babar detector at the pep-ii storage rings at the stanford linear accelerator center, we measure the branching fractions of seven color-suppressed b-meson decays: b((b) over bar (0)-->d(0)pi(0))=[2.9+/-0.2(stat)+/-0.3(syst)]x10(-4), b((b) over bar (0)-->d(*0)pi(0))=[2.9+/-0.4(stat)+/-0.5(syst)]x10(-4), b((b) over bar (0)-->d(0)eta)=[2.5+/-0.2(stat)+/-0.3(syst)]x10(-4), (0)-->d(*0)eta)=[2.6+/-0.4(stat)+/-0.4(syst)]x10(-4), b((b) over bar (0)-->d(0)omega)=[3.0+/-0.3(stat)+/-0.4(syst)]x10(-4), b((b) over bar (0)-->d(*0)omega)=[4.2+/-0.7(stat)+/-0.9(syst)]x10(-4), and b((b) over bar (0)-->d(0)eta('))=[1.7+/-0.4(stat)+/-0.2(syst)]x10(-4). we set the 90% confidence-level upper limit: b((b) over bar (0)-->d(*0)eta('))<2.6x10(-4). the channels (b) over bar (0)-->d(*0)eta, d(*0)omega, and d(0)eta(') are seen with more than five-sigma statistical significance. all of these branching fractions are significantly larger than theoretical expectations based on the "naive" factorization model.
WOS关键词B-MESONS ; NONLEPTONIC DECAYS ; FACTORIZATION ; SEARCH ; LIGHT
WOS研究方向Astronomy & Astrophysics ; Physics
WOS类目Astronomy & Astrophysics ; Physics, Particles & Fields
语种英语
出版者AMERICAN PHYSICAL SOC
WOS记录号WOS:000220001600007
URI标识http://www.irgrid.ac.cn/handle/1471x/2176387
专题高能物理研究所
通讯作者Aubert, B
作者单位1.Lab Annecy Le Vieux Phys Particules, F-74941 Annecy Le Vieux, France
2.Univ Bari, Dipartimento Fis, I-70126 Bari, Italy
3.Ist Nazl Fis Nucl, I-70126 Bari, Italy
4.Inst High Energy Phys, Beijing 100039, Peoples R China
5.Univ Bergen, Inst Phys, N-5007 Bergen, Norway
6.Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA
7.Univ Birmingham, Birmingham B15 2TT, W Midlands, England
8.Ruhr Univ Bochum, Inst Expt Phys, D-44780 Bochum, Germany
9.Univ Bristol, Bristol BS8 1TL, Avon, England
10.Univ British Columbia, Vancouver, BC V6T 1Z1, Canada
推荐引用方式
GB/T 7714		 Aubert, B,Barate, R,Boutigny, D,et al. Measurement of branching fractions of color-suppressed decays of the (b)over-bar(0) meson to d-(*)0 pi(0), d-(*)0 eta, d-(*)0 omega, and d-0 eta '[J]. Physical review d,2004,69(3):21.
APA Aubert, B.,Barate, R.,Boutigny, D.,Gaillard, JM.,Hicheur, A.,...&Neal, H.(2004).Measurement of branching fractions of color-suppressed decays of the (b)over-bar(0) meson to d-(*)0 pi(0), d-(*)0 eta, d-(*)0 omega, and d-0 eta '.Physical review d,69(3),21.
MLA Aubert, B,et al."Measurement of branching fractions of color-suppressed decays of the (b)over-bar(0) meson to d-(*)0 pi(0), d-(*)0 eta, d-(*)0 omega, and d-0 eta '".Physical review d 69.3(2004):21.

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