Study of (B)over-bar → Xul(v)over-bar decays in B(B)over-bar events tagged by a fully reconstructed B-meson decay and determination of |Vub|

被引：26

作者：

Lees, J. P. ^{[1
]}

Poireau, V. ^{[1
]}

Tisserand, V. ^{[1
]}

Tico, J. Garra ^{[2
]}

Grauges, E. ^{[2
]}

Martinelli, M. ^{[3
,4
]}

Milanes, D. A. ^{[3
]}

Palano, A. ^{[3
,4
]}

Pappagallo, M. ^{[3
,4
]}

Eigen, G. ^{[5
]}

Stugu, B. ^{[5
]}

Brown, D. N. ^{[6
,43
]}

Kerth, L. T. ^{[6
]}

Kolomensky, Yu G. ^{[6
]}

Lynch, G. ^{[6
]}

Tackmann, K. ^{[6
]}

Koch, H. ^{[7
]}

Schroeder, T. ^{[7
]}

Asgeirsson, D. J. ^{[8
]}

Hearty, C. ^{[8
]}

Mattison, T. S. ^{[8
]}

McKenna, J. A. ^{[8
]}

Khan, A. ^{[9
]}

Blinov, V. E. ^{[10
]}

Buzykaev, A. R. ^{[10
]}

Druzhinin, V. P. ^{[10
]}

Golubev, V. B. ^{[10
]}

Kravchenko, E. A. ^{[10
]}

Onuchin, A. P. ^{[10
]}

Serednyakov, S. I. ^{[10
]}

Skovpen, Yu I. ^{[10
]}

Solodov, E. P. ^{[10
]}

Todyshev, K. Yu ^{[10
]}

Yushkov, A. N. ^{[10
]}

Bondioli, M. ^{[11
]}

Kirkby, D. ^{[11
]}

Lankford, A. J. ^{[11
]}

Mandelkern, M. ^{[11
]}

Stoker, D. P. ^{[11
]}

Atmacan, H. ^{[12
]}

Gary, J. W. ^{[12
]}

Liu, F. ^{[12
]}

Long, O. ^{[12
]}

Vitug, G. M. ^{[12
]}

Campagnari, C. ^{[13
]}

Hong, T. M. ^{[13
]}

Kovalskyi, D. ^{[13
]}

Richman, J. D. ^{[13
]}

West, C. A. ^{[13
]}

Eisner, A. M. ^{[14
]}

机构：

[1] Univ Savoie, LAPP, CNRS, IN2P3, F-74941 Annecy Le Vieux, France

[2] Univ Barcelona, Fac Fis, Dept ECM, E-08028 Barcelona, Spain

[3] INFN Sez Bari, I-70126 Bari, Italy

[4] Univ Bari, Dipartmento Fis, I-70126 Bari, Italy

[5] Univ Bergen, Inst Phys, N-5007 Bergen, Norway

[6] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA

[7] Ruhr Univ Bochum, Inst Expt Phys, D-44780 Bochum, Germany

[8] Univ British Columbia, Vancouver, BC V6T 1Z1, Canada

[9] Brunel Univ, Uxbridge UB8 3PH, Middx, England

[10] Budker Inst Nucl Phys, Novosibirsk 630090, Russia

[11] Univ Calif Irvine, Irvine, CA 92697 USA

[12] Univ Calif Riverside, Riverside, CA 92521 USA

[13] Univ Calif Santa Barbara, Santa Barbara, CA 93106 USA

[14] Univ Calif Santa Cruz, Inst Particle Phys, Santa Cruz, CA 95064 USA

[15] CALTECH, Pasadena, CA 91125 USA

[16] Univ Cincinnati, Cincinnati, OH 45221 USA

[17] Univ Colorado, Boulder, CO 80309 USA

[18] Colorado State Univ, Ft Collins, CO 80523 USA

[19] Tech Univ Dortmund, Fak Phys, D-44221 Dortmund, Germany

[20] Tech Univ Dresden, Inst Kern & Teilchenphys, D-01062 Dresden, Germany

[21] Ecole Polytech, Lab Leprince Ringuet, CNRS, IN2P3, F-91128 Palaiseau, France

[22] Univ Edinburgh, Edinburgh EH9 3JZ, Midlothian, Scotland

[23] INFN Sez Ferrara, I-44100 Ferrara, Italy

[24] Univ Ferrara, Dipartmento Fis, I-44100 Ferrara, Italy

[25] INFN Lab Nazl Frascati, I-00044 Frascati, Italy

[26] INFN Sez Genova, I-16146 Genoa, Italy

[27] Univ Genoa, Dipartimento Fis, I-16146 Genoa, Italy

[28] Indian Inst Technol Guwahati, Gauhati 781039, Assam, India

[29] Harvard Univ, Cambridge, MA 02138 USA

[30] Harvey Mudd Coll, Claremont, CA 91711 USA

[31] Heidelberg Univ, Inst Phys, D-69120 Heidelberg, Germany

[32] Univ Berlin, Inst Phys, D-12489 Berlin, Germany

[33] Univ London Imperial Coll Sci Technol & Med, London SW7 2AZ, England

[34] Univ Iowa, Iowa City, IA 52242 USA

[35] Iowa State Univ, Ames, IA 50011 USA

[36] Johns Hopkins Univ, Baltimore, MD 21218 USA

[37] CNRS, IN2P3, Lab Accelerateur Lineaire, F-91898 Orsay, France

[38] Univ Paris 11, Ctr Sci Orsay, F-91898 Orsay, France

[39] Lawrence Livermore Natl Lab, Livermore, CA 94550 USA

[40] Univ Liverpool, Liverpool L69 7ZE, Merseyside, England

[41] Univ London, London E1 4NS, England

[42] Univ London, Royal Holloway & Bedford New Coll, Egham TW20 0EX, Surrey, England

[43] Univ Louisville, Louisville, KY 40292 USA

[44] Johannes Gutenberg Univ Mainz, Inst Kernphys, D-55099 Mainz, Germany

[45] Univ Manchester, Manchester M13 9PL, Lancs, England

[46] Univ Maryland, College Pk, MD 20742 USA

[47] Univ Massachusetts, Amherst, MA 01003 USA

[48] MIT, Nucl Sci Lab, Cambridge, MA 02139 USA

[49] McGill Univ, Montreal, PQ H3A 2T8, Canada

[50] INFN Sez Milano, I-20133 Milan, Italy

来源：

PHYSICAL REVIEW D | 2012年 / 86卷 / 03期

基金：

英国科学技术设施理事会; 美国国家科学基金会; 加拿大自然科学与工程研究理事会;

关键词：

INCLUSIVE SEMILEPTONIC-B; EFFECTIVE FIELD-THEORY; ENERGY MOMENTS; CP-VIOLATION; END-POINT; HEAVY; ANNIHILATION; PARTICLE; FACTORIZATION; SPECTRUM;

D O I：

10.1103/PhysRevD.86.032004

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We report measurements of partial branching fractions for inclusive charmless semileptonic B decays (B) over bar -> X(u)l (v) over bar and the determination of the Cabibbo-Kobayashi-Maskawa (CKM) matrix element vertical bar V-ub vertical bar. The analysis is based on a sample of 467 x 10(6) Y(4S) -> B (B) over bar decays recorded with the BABAR detector at the PEP- II e(+)e(-) storage rings. We select events in which the decay of one of the B mesons is fully reconstructed and an electron or a muon signals the semileptonic decay of the other B meson. We measure partial branching fractions Delta B in several restricted regions of phase space and determine the CKM element vertical bar V-ub vertical bar based on different QCD predictions. For decays with a charged lepton momentum p(l)* > 1.0 GeV in the B meson rest frame, we obtain Delta B = (1.80 +/- 0.13(stat) +/- 0.15(sys) +/- 0.02(theo)) x 10(-3) from a fit to the two-dimensional M-X - q(2) distribution. Here, M-X refers to the invariant mass of the final state hadron X and q(2) is the invariant mass squared of the charged lepton and neutrino. From this measurement we extract vertical bar V-ub vertical bar = (4.33 +/- 0.24(exp) +/- 0.15(theo)) x 10(-3) as the arithmetic average of four results obtained from four different QCD predictions of the partial rate. We separately determine partial branching fractions for (B) over bar (0) and B- decays and derive a limit on the isospin breaking in (B) over bar -> X(u)l (v) over bar decays.

引用

页数：23

共 64 条

[1] Inclusive measure of |Vub| with the analytic coupling model
Aglietti, U.
Di Lodovico, F.
Ferrera, G.
Ricciardi, G.
[J]. EUROPEAN PHYSICAL JOURNAL C, 2009, 59 (04): : 831 - 840
[2] Semi-inclusive B decays and a model for soft-gluon effects
Aglietti, Ugo
Ferrera, Giancarlo
Ricciardi, Giulia
[J]. NUCLEAR PHYSICS B, 2007, 768 (1-2) : 85 - 115
[3] GEANT4-a simulation toolkit
Agostinelli, S
Allison, J
Amako, K
Apostolakis, J
Araujo, H
Arce, P
Asai, M
Axen, D
Banerjee, S
Barrand, G
Behner, F
Bellagamba, L
Boudreau, J
Broglia, L
Brunengo, A
Burkhardt, H
Chauvie, S
Chuma, J
Chytracek, R
Cooperman, G
Cosmo, G
Degtyarenko, P
Dell'Acqua, A
Depaola, G
Dietrich, D
Enami, R
Feliciello, A
Ferguson, C
Fesefeldt, H
Folger, G
Foppiano, F
Forti, A
Garelli, S
Giani, S
Giannitrapani, R
Gibin, D
Cadenas, JJG
González, I
Abril, GG
Greeniaus, G
Greiner, W
Grichine, V
Grossheim, A
Guatelli, S
Gumplinger, P
Hamatsu, R
Hashimoto, K
Hasui, H
Heikkinen, A
Howard, A
[J]. NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, 2003, 506 (03) : 250 - 303
[4] ALBRECHT H, 1990, Z PHYS C PART FIELDS, V48, P543, DOI 10.1007/BF01614687
[5] ALTHOFF M, 1985, Z PHYS C PART FIELDS, V27, P27, DOI 10.1007/BF01642477
[6] Amhis Y., ARXIV12071158 HEAV F
[7] Andersen JR, 2006, J HIGH ENERGY PHYS
[8] Flavor physics in the quark sector
Antonelli, M.
Asner, D. M.
Bauer, D.
Becher, T.
Beneke, M.
Bevan, A. J.
Blanke, M.
Bloise, C.
Bona, M.
Bondar, A.
Bozzi, C.
Brod, J.
Buras, A. J.
Cabibbo, N.
Carbone, A.
Cavoto, G.
Cirigliano, V.
Ciuchini, M.
Coleman, J. P.
Cronin-Hennessy, D. P.
Dalseno, J. P.
Davies, C. H.
Di Lodovico, F.
Dingfelder, J.
Dolezal, Z.
Donati, S.
Dungel, W.
Eigen, G.
Egede, U.
Faccini, R.
Feldmann, T.
Ferroni, F.
Flynn, J. M.
Franco, E.
Fujikawa, M.
Furic, I. K.
Gambino, P.
Gardi, E.
Gershon, T. J.
Giagu, S.
Golowich, E.
Goto, T.
Greub, C.
Grojean, C.
Guadagnoli, D.
Haisch, U. A.
Harr, R. F.
Hoang, A. H.
Hurth, T.
Isidori, G.
[J]. PHYSICS REPORTS-REVIEW SECTION OF PHYSICS LETTERS, 2010, 494 (3-4): : 197 - 414
[9] Determination of the form factors for the decay B0→D*-l+νl and of the CKM matrix element |Vcb|
Aubert, B.
Bona, M.
Boutigny, D.
Karyotakis, Y.
Lees, J. P.
Poireau, V.
Prudent, X.
Tisserand, V.
Zghiche, A.
Tico, J. Garra
Grauges, E.
Lopez, L.
Palano, A.
Eigen, G.
Ofte, I.
Stugu, B.
Sun, L.
Abrams, G. S.
Battaglia, M.
Brown, D. N.
Button-Shafer, J.
Cahn, R. N.
Groysman, Y.
Jacobsen, R. G.
Kadyk, J. A.
Kerth, L. T.
Kolomensky, Yu. G.
Kukartsev, G.
Pegna, D. Lopes
Lynch, G.
Mir, L. M.
Orimoto, T. J.
Pripstein, M.
Roe, N. A.
Ronan, M. T.
Tackmann, K.
Wenzel, W. A.
Sanchez, P. Del Amo
Hawkes, C. M.
Watson, A. T.
Held, T.
Koch, H.
Lewandowski, B.
Pelizaeus, M.
Schroeder, T.
Steinke, M.
Cottingham, W. N.
Walker, D.
Asgeirsson, D. J.
Cuhadar-Donszelmann, T.
[J]. PHYSICAL REVIEW D, 2008, 77 (03):
[10] Measurement of the B0→π-l+ν form-factor shape and branching fraction, and determination of |Vub| with a loose neutrino reconstruction technique
Aubert, B.
Bona, M.
Boutigny, D.
Karyotakis, Y.
Lees, J. P.
Poireau, V.
Prudent, X.
Tisserand, V.
Zghiche, A.
Grauges, E.
Palano, A.
Chen, J. C.
Qi, N. D.
Rong, G.
Wang, P.
Zhu, Y. S.
Eigen, G.
Ofte, I.
Stugu, B.
Abrams, G. S.
Battaglia, M.
Brown, D. N.
Button-Shafer, J.
Cahn, R. N.
Groysman, Y.
Jacobsen, R. G.
Kadyk, J. A.
Kerth, L. T.
Kolomensky, Yu. G.
Kukartsev, G.
Pegna, D. Lopes
Lynch, G.
Mir, L. M.
Orimoto, T. J.
Pripstein, M.
Roe, N. A.
Ronan, M. T.
Tackmann, K.
Wenzel, W. A.
Sanchez, P. del Amo
Barrett, M.
Harrison, T. J.
Hart, A. J.
Hawkes, C. M.
Watson, A. T.
Held, T.
Koch, H.
Lewandowski, B.
Pelizaeus, M.
Peters, K.
[J]. PHYSICAL REVIEW LETTERS, 2007, 98 (09)

← 1 2 3 4 5 6 7 →