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Observation of b ->eta ' k-* and evidence for b+->eta ' p(+)

文献类型:期刊论文

AuthorAubert, B.; Barate, R.; Bona, M.; Boutigny, D.; Couderc, F.; Karyotakis, Y.; Lees, J. P.; Poireau, V.; Tisserand, V.; Zghiche, A.
SourcePhysical review letters
Issued Date2007-02-02
Volume98Issue:5Pages:7
ISSN0031-9007
DOI10.1103/physrevlett.98.051802
Corresponding AuthorAubert, b.()
English AbstractWe present an observation of b -> eta'k*. the data sample corresponds to 232 x 10(6) bb pairs collected with the babar detector at the pep-ii asymmetric-energy b factory at the stanford linear accelerator center. we measure the branching fractions (in units of 10(-6)) b(b-0 -> eta'k-*0) = 3.8 +/- 1.1 +/- 0.5 and b(b+ -> eta'k*+) = 4.9(-1.7)(+1.9) +/- 0.8, where the first error is statistical and the second systematic. a simultaneous fit results in the observation of b -> eta'k-* with b(b -> eta'k-*) = 4.1(-0.9)(+1.0) +/- 0.5. we also search for b -> eta'rho and eta'f(0)(980)(f(0) -> pi(+) pi(-)) with results and 90% confidence level upper limits b(b+ -> eta'rho(+)) = 8.7(-2.8-1.3)(+3.1+2.3) (< 14), b(b0 -> eta'rho(0)) < 3.7, and b(b-0 -> eta'f(0)(980)(f(0) -> pi(+) pi(-))) < 1.5. charge asymmetries in the channels with significant yields are consistent with zero.
WOS KeywordQCD FACTORIZATION ; DECAY
WOS Research AreaPhysics
WOS SubjectPhysics, Multidisciplinary
Language英语
WOS IDWOS:000244646100018
PublisherAMERICAN PHYSICAL SOC
URIhttp://www.irgrid.ac.cn/handle/1471x/2175848
Collection高能物理研究所
Corresponding AuthorAubert, B.
Affiliation1.Phys Particules Lab, F-74941 Annecy Le Vieux, France
2.Univ Barcelona, Fac Fis, Dept ECM, E-08028 Barcelona, Spain
3.Univ Bari, Dipartmento Fis, I-70126 Bari, Italy
4.Ist Nazl Fis Nucl, I-70126 Bari, Italy
5.Inst High Energy Phys, Beijing 100039, Peoples R China
6.Univ Bergen, Inst Phys, N-5007 Bergen, Norway
7.Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA
8.Univ Calif Berkeley, Berkeley, CA 94720 USA
9.Univ Birmingham, Birmingham B15 2TT, W Midlands, England
10.Ruhr Univ Bochum, Inst Expt Phys, D-44780 Bochum, Germany
Recommended Citation
GB/T 7714
Aubert, B.,Barate, R.,Bona, M.,et al. Observation of b ->eta ' k-* and evidence for b+->eta ' p(+)[J]. Physical review letters,2007,98(5):7.
APA Aubert, B..,Barate, R..,Bona, M..,Boutigny, D..,Couderc, F..,...&Neal, H..(2007).Observation of b ->eta ' k-* and evidence for b+->eta ' p(+).Physical review letters,98(5),7.
MLA Aubert, B.,et al."Observation of b ->eta ' k-* and evidence for b+->eta ' p(+)".Physical review letters 98.5(2007):7.

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