Study of (B)over-bar→Ξc(Λ)over-barc- and (B)over-bar→Λc+(Λ)over-barc-(K)over-bar decays at BABAR

被引：0

作者：

Aubert, B. ^{[1
,2
]}

Bona, M. ^{[1
,2
]}

Boutigny, D. ^{[1
,2
]}

Karyotakis, Y. ^{[1
,2
]}

Lees, J. P. ^{[1
,2
]}

Poireau, V. ^{[1
,2
]}

Prudent, X. ^{[1
,2
]}

Tisserand, V. ^{[1
,2
]}

Zghiche, A. ^{[1
,2
]}

Tico, J. Garra ^{[3
]}

Grauges, E. ^{[3
]}

Lopez, L. ^{[4
,5
]}

Palano, A. ^{[4
,5
]}

Pappagallo, M. ^{[4
,5
]}

Eigen, G. ^{[6
]}

Stugu, B. ^{[6
]}

Sun, L. ^{[6
]}

Abrams, G. S. ^{[7
]}

Battaglia, M. ^{[7
]}

Brown, D. N. ^{[7
,46
]}

Button-Shafer, J. ^{[7
]}

Cahn, R. N. ^{[7
]}

Groysman, Y. ^{[7
]}

Jacobsen, R. G. ^{[7
]}

Kadyk, J. A. ^{[7
]}

Kerth, L. T. ^{[7
]}

Kolomensky, Yu. G. ^{[7
]}

Kukartsev, G. ^{[7
]}

Pegna, D. Lopes ^{[7
]}

Lynch, G. ^{[7
]}

Mir, L. M. ^{[7
]}

Orimoto, T. J. ^{[7
]}

Osipenkov, I. L. ^{[7
]}

Ronan, M. T. ^{[7
]}

Tackmann, K. ^{[7
]}

Tanabe, T. ^{[7
]}

Wenzel, W. A. ^{[7
]}

del Amo Sanchez, P. ^{[8
]}

Hawkes, C. M. ^{[8
]}

Watson, A. T. ^{[8
]}

Koch, H. ^{[9
]}

Schroeder, T. ^{[9
]}

Walker, D. ^{[10
]}

Asgeirsson, D. J. ^{[11
]}

Cuhadar-Donszelmann, T. ^{[11
]}

Fulsom, B. G. ^{[11
]}

Hearty, C. ^{[11
]}

Mattison, T. S. ^{[11
]}

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

Barrett, M. ^{[12
]}

机构：

[1] IN2P3 CNRS, Phys Particules Lab, F-74941 Annecy Le Vieux, France

[2] Univ Savoie, F-74941 Annecy Le Vieux, France

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

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

[5] Ist Nazl Fis Nucl, I-70126 Bari, Italy

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

[7] Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA

[8] Univ Birmingham, Birmingham B15 2TT, W Midlands, England

[9] Ruhr Univ Bochum, Inst Expt Phys 1, D-44780 Bochum, Germany

[10] Univ Bristol, Bristol BS8 1TL, Avon, England

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

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

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

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

[15] Univ Calif Los Angeles, Los Angeles, CA 90024 USA

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

[17] Univ Calif San Diego, La Jolla, CA 92093 USA

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

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

[20] CALTECH, Pasadena, CA 91125 USA

[21] Univ Cincinnati, Cincinnati, OH 45221 USA

[22] Univ Colorado, Boulder, CO 80309 USA

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

[24] Univ Dortmund, Inst Phys, D-44221 Dortmund, Germany

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

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

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

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

[29] Ist Nazl Fis Nucl, I-44100 Ferrara, Italy

[30] Ist Nazl Fis Nucl, Lab Nazl Frascati, I-00044 Frascati, Italy

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

[32] Ist Nazl Fis Nucl, I-16146 Genoa, Italy

[33] Harvard Univ, Cambridge, MA 02138 USA

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

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

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

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

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

[39] Univ Karlsruhe, Inst Expt Kernphys, D-76021 Karlsruhe, Germany

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

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

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

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

[44] Queen Mary Univ London, London E1 4NS, England

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

[46] Univ Louisville, Louisville, KY 40292 USA

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

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

[49] Univ Massachusetts, Amherst, MA 01003 USA

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

来源：

PHYSICAL REVIEW D | 2008年 / 77卷 / 03期

基金：

英国科学技术设施理事会;

关键词：

D O I：

10.1103/PhysRevD.77.031101

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We report measurements of B-meson decays into two- and three-body final states containing two charmed baryons using a sample of 230x10(6) Upsilon(4S)-> B (B) over bar decays. We find significant signals in two modes, measuring branching fractions B(B-->Lambda(+)(c)(Lambda) over bar K--(c)-)=(1.14 +/- 0.15 +/- 0.17 +/- 0.60)x10(-3) and B(B-->Xi(0)(c)(Lambda) over bar (-)(c))xB(Xi(0)(c)->Xi(-)pi(+))=(2.08 +/- 0.65 +/- 0.29 +/- 0.54)x10(-5), where the uncertainties are statistical, systematic, and from the branching fraction B(Lambda(+)(c)-> pK(-)pi(+)), respectively. We also set upper limits at the 90% confidence level on two other modes: B((B) over bar (0)->Xi(+)(c)(Lambda) over bar (-)(c))xB(Xi(+)(c)->Xi(-)pi(+)pi(+))< 5.6x10(-5) and B((B) over bar (0)->Lambda(+)(c)(Lambda) over bar (-)(c)(K) over bar (0))< 1.5x10(-3). We observe structure centered at an invariant mass of 2.93 GeV/c(2) in the Lambda K-+(c)- mass distribution of the decay B-->Lambda(+)(c)(Lambda) over bar K--(c)-.

引用

页数：8

共 18 条

[1] GEANT4-a simulation toolkit [J].

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 .

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, 2003, 506 (03) :250-303

[2] SEARCH FOR HADRONIC B-]U DECAYS [J].

ALBRECHT, H ;

GLASER, R ;

HARDER, G ;

KRUGER, A ;

NILSSON, AW ;

NIPPE, A ;

OEST, T ;

REIDENBACH, M ;

SCHAFER, M ;

SCHMIDTPARZEFALL, W ;

SCHRODER, H ;

SCHULZ, HD ;

SEFKOW, F ;

WURTH, R ;

APPUHN, RD ;

DRESCHER, A ;

HAST, C ;

HERRERA, G ;

KOLANOSKI, H ;

LANGE, A ;

LINDNER, A ;

MANKEL, R ;

SCHECK, H ;

SCHWEDA, G ;

SPAAN, B ;

WALTHER, A ;

WEGENER, D ;

PAULINI, M ;

REIM, K ;

VOLLAND, U ;

WEGENER, H ;

FUNK, W ;

STIEWE, J ;

WERNER, S ;

BALL, S ;

GABRIEL, JC ;

GEYER, C ;

HOLSCHER, A ;

HOFMANN, W ;

HOLZER, B ;

KHAN, S ;

SPENGLER, J ;

CHARLESWORTH, CEK ;

EDWARDS, KW ;

FRISKEN, WR ;

KAPITZA, H ;

KRIEGER, P ;

KUTSCHKE, R ;

MACFARLANE, DB ;

MCLEAN, KW .

PHYSICS LETTERS B, 1990, 241 (02) :278-282

[3] Production and decay of Ξc0 at BABAR -: art. no. 142003 [J].

Aubert, B ;

Barate, R ;

Boutigny, D ;

Couderc, F ;

Karyotakis, Y ;

Lees, JP ;

Poireau, V ;

Tisserand, V ;

Zghiche, A ;

Grauges, E ;

Palano, A ;

Pappagallo, M ;

Pompili, A ;

Chen, JC ;

Qi, ND ;

Rong, G ;

Wang, P ;

Zhu, YS ;

Eigen, G ;

Ofte, I ;

Stugu, B ;

Abrams, GS ;

Borgland, AW ;

Breon, AB ;

Brown, DN ;

Button-Shafer, J ;

Cahn, RN ;

Charles, E ;

Day, CT ;

Gill, MS ;

Gritsan, AV ;

Groysman, Y ;

Jacobsen, RG ;

Kadel, RW ;

Kadyk, J ;

Kerth, LT ;

Kolomensky, YG ;

Kukartsev, G ;

Lynch, G ;

Mir, LM ;

Oddone, PJ ;

Orimoto, TJ ;

Pripstein, M ;

Roe, NA ;

Ronan, MT ;

Wenzel, WA ;

Barrett, M ;

Ford, KE ;

Harrison, TJ ;

Hart, AJ .

PHYSICAL REVIEW LETTERS, 2005, 95 (14)

[4] The BABAR detector [J].

Aubert, B ;

Bazan, A ;

Boucham, A ;

Boutigny, D ;

De Bonis, I ;

Favier, J ;

Gaillard, JM ;

Jeremie, A ;

Karyotakis, Y ;

Le Flour, T ;

Lees, JP ;

Lieunard, S ;

Petitpas, P ;

Robbe, P ;

Tisserand, V ;

Zachariadou, K ;

Palano, A ;

Chen, GP ;

Chen, JC ;

Qi, ND ;

Rong, G ;

Wang, P ;

Zhu, YS ;

Eigen, G ;

Reinertsen, PL ;

Stugu, B ;

Abbott, B ;

Abrams, GS ;

Amerman, L ;

Borgland, AW ;

Breon, AB ;

Brown, DN ;

Button-Shafer, J ;

Clark, AR ;

Dardin, S ;

Day, C ;

Dow, SF ;

Fan, Q ;

Gaponenko, I ;

Gill, MS ;

Goozen, FR ;

Gowdy, SJ ;

Gritsan, A ;

Groysman, Y ;

Hernikl, C ;

Jacobsen, RG ;

Jared, RC ;

Kadel, RW ;

Kadyk, J ;

Karcher, A .

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, 2002, 479 (01) :1-116

[5] Inclusive Λ+c production in e+e- annihilations at √s=10.54 GeV and in Y(4S) decays [J].

Aubert, B. ;

Bona, M. ;

Boutigny, D. ;

Couderc, F. ;

Karyotakis, Y. ;

Lees, J. P. ;

Poireau, V. ;

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. ;

Charles, E. ;

Gill, M. S. ;

Groysman, Y. ;

Jacobsen, R. G. ;

Kadyk, J. A. ;

Kerth, L. T. ;

Kolomensky, Yu. G. ;

Kukartsev, G. ;

Lynch, G. ;

Mir, L. M. ;

Orimoto, T. J. ;

Pripstein, M. ;

Roe, N. A. ;

Ronan, M. T. ;

Wenzel, W. A. ;

Sanchez, P. del Amo ;

Barrett, M. ;

Ford, K. E. ;

Harrison, T. J. ;

Hart, A. J. ;

Hawkes, C. M. ;

Watson, A. T. ;

Held, T. ;

Koch, H. ;

Lewandowski, B. ;

Pelizaeus, M. .

PHYSICAL REVIEW D, 2007, 75 (01)

[6] Study of inclusive B- and (B)over-bar0 decays to flavor-tagged D, Ds, and Λc+ [J].

Aubert, B. ;

Barate, R. ;

Bona, M. ;

Boutigny, D. ;

Couderc, F. ;

Karyotakis, Y. ;

Lees, J. P. ;

Poireau, V. ;

Tisserand, V. ;

Zghiche, A. ;

Grauges, E. ;

Palano, A. ;

Pappagallo, M. ;

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. ;

Charles, E. ;

Day, C. T. ;

Gill, M. S. ;

Groysman, Y. ;

Jacobsen, R. G. ;

Kadyk, J. A. ;

Kerth, L. T. ;

Kolomensky, Yu. G. ;

Kukartsev, G. ;

Lynch, G. ;

Mir, L. M. ;

Oddone, P. J. ;

Orimoto, T. J. ;

Pripstein, M. ;

Roe, N. A. ;

Ronan, M. T. ;

Wenzel, W. A. ;

Barrett, M. ;

Ford, K. E. ;

Harrison, T. J. ;

Hart, A. J. ;

Hawkes, C. M. ;

Morgan, S. E. ;

Watson, A. T. .

PHYSICAL REVIEW D, 2007, 75 (07)

[7] BRANCHING RATIOS OF EXCLUSIVE DECAYS OF BOTTOM MESONS INTO BARYON-ANTIBARYON PAIRS [J].

BALL, P ;

DOSCH, HG .

ZEITSCHRIFT FUR PHYSIK C-PARTICLES AND FIELDS, 1991, 51 (03) :445-453

[8] Production of doubly-charmed baryons in B decays [J].

Chen, Chuan-Hung .

PHYSICS LETTERS B, 2006, 638 (2-3) :214-220

[9] Doubly charmful baryonic B decays -: art. no. 074015 [J].

Cheng, HY ;

Chua, CK ;

Tsai, SY .

PHYSICAL REVIEW D, 2006, 73 (07)

[10] B-MESON EXCLUSIVE DECAYS INTO BARYONS [J].

CHERNYAK, VL ;

ZHITNITSKY, IR .

NUCLEAR PHYSICS B, 1990, 345 (01) :137-172

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