Study of the decay (B)over-bar0 → Λc+ (p)over-bar π+ π- and its intermediate states

被引：4

作者：

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

Poireau, V. ^{[1
]}

Tisserand, V. ^{[1
]}

Grauges, E. ^{[2
]}

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

Eigen, G. ^{[5
]}

Stugu, B. ^{[5
]}

Brown, D. N. ^{[6
,7
,43
]}

Kerth, L. T. ^{[6
,7
]}

Kolomensky, Yu. G. ^{[6
,7
]}

Lynch, G. ^{[6
,7
]}

Koch, H. ^{[8
]}

Schroeder, T. ^{[8
]}

Asgeirsson, D. J. ^{[9
]}

Hearty, C. ^{[9
]}

Mattison, T. S. ^{[9
]}

McKenna, J. A. ^{[9
]}

So, R. Y. ^{[9
]}

Khan, A. ^{[10
]}

Blinov, V. E. ^{[11
]}

Buzykaev, A. R. ^{[11
]}

Druzhinin, V. P. ^{[11
]}

Golubev, V. B. ^{[11
]}

Kravchenko, E. A. ^{[11
]}

Onuchin, A. P. ^{[11
]}

Serednyakov, S. I. ^{[11
]}

Skovpen, Yu. I. ^{[11
]}

Solodov, E. P. ^{[11
]}

Todyshev, K. Yu. ^{[11
]}

Yushkov, A. N. ^{[11
]}

Kirkby, D. ^{[12
]}

Lankford, A. J. ^{[12
]}

Mandelkern, M. ^{[12
]}

Atmacan, H. ^{[13
]}

Gary, J. W. ^{[13
]}

Long, O. ^{[13
]}

Vitug, G. M. ^{[13
]}

Campagnari, C. ^{[14
]}

Hong, T. M. ^{[14
]}

Kovalskyi, D. ^{[14
]}

Richman, J. D. ^{[14
]}

West, C. A. ^{[14
]}

Eisner, A. M. ^{[15
]}

Kroseberg, J. ^{[15
]}

Lockman, W. S. ^{[15
]}

Martinez, A. J. ^{[15
]}

Schumm, B. A. ^{[15
]}

Seiden, A. ^{[15
]}

Chao, D. S. ^{[16
]}

Cheng, C. H. ^{[16
]}

机构：

[1] Univ Savoie, CNRS IN2P3, Lab Annecy le Vieux Phys Particules LAPP, 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] Univ Calif Berkeley, Berkeley, CA 94720 USA

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

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

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

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

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

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

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

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

[16] CALTECH, Pasadena, CA 91125 USA

[17] Univ Cincinnati, Cincinnati, OH 45221 USA

[18] Univ Colorado, Boulder, CO 80309 USA

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

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

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

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

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

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

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

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

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

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

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

[30] Harvard Univ, Cambridge, MA 02138 USA

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

[32] Humboldt Univ, 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] IN2P3 CNRS, 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 | 2013年 / 87卷 / 09期

基金：

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

关键词：

D O I：

10.1103/PhysRevD.87.092004

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We study the decay (B) over bar (0) -> Lambda(+)(c) (p) over bar pi(+) pi(-), reconstructing the Lambda(+)(c) baryon in the pK(-) pi(+) mode, using a data sample of 467 X 10(6) B (B) over bar pairs collected with the BABAR detector at the PEP-II storage rings at SLAC. We measure branching fractions for decays with intermediate Sigma(c) baryons to be B[(B) over bar (0) -> Sigma(c)(2455)(++) (p) over bar (-) pi(-)] = (21.3 +/- 1.0 +/- 1.0 +/- 5.5) X 10(-5), B[(B) over bar (0) -> Sigma(c)(2520)(++) (p) over bar (-) pi(-)] = (11.5 +/- 1.0 +/- 0.5 +/- 3.0) X 10(-5), B[(B) over bar (0) -> Sigma(c)(2455)(0) (p) over bar (-) pi(-)] - (9.1 +/- 0.7 +/- 0.4 +/- 2.4) X 10(-5), and B[(B) over bar (0) -> Sigma(c)(2520)(++) (p) over bar (-) pi(-)] - (2.2 +/- 0.7 +/- 0.1 +/- 0.6) X 10(-5), where the uncertainties are statistical, systematic, and due to the uncertainty on the Lambda(+)(c) -> pK(-) pi(+) branching fraction, respectively. For decays without Sigma(c)(2455) or Sigma(c)(2520) resonances, we measure B[(B) over bar (0) -> Lambda(+)(c) (p) over bar pi(+) pi(-)](non-Sigma c) =(79 +/- 4 +/- 4 +/- 20) X 10(-5). The total branching fraction is determined to be B[(B) over bar (0) -> Lambda(+)(c) (p) over bar pi(+) pi(-)](total) = (123 +/- 5 +/- 7 +/- 32) X 10(-5). We examine multibody mass combinations in the resonant three-particle Sigma(c) final states and in the four-particle Lambda(+)(c) (p) over bar pi(+) pi(-) final state, and observe different characteristics for the (p) over bar pi combination in neutral versus doubly charged Sigma(c) decays.

引用

页数：17

共 50 条

[1] Observation of the decay (B)over-bar0 → Λc+(p)over-barπ0
Aubert, B.
Karyotakis, Y.
Lees, J. P.
Poireau, V.
Prencipe, E.
Prudent, X.
Tisserand, V.
Tico, J. Garra
Grauges, E.
Martinelli, M.
Palano, A.
Pappagallo, M.
Eigen, G.
Stugu, B.
Sun, L.
Battaglia, M.
Brown, D. N.
Hooberman, B.
Kerth, L. T.
Kolomensky, Yu. G.
Lynch, G.
Osipenkov, I. L.
Tackmann, K.
Tanabe, T.
Hawkes, C. M.
Soni, N.
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Koch, H.
Schroeder, T.
Asgeirsson, D. J.
Hearty, C.
Mattison, T. S.
McKenna, J. A.
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Khan, A.
Randle-Conde, A.
Blinov, V. E.
Bukin, A. D.
Buzykaev, A. R.
Druzhinin, V. P.
Golubev, V. B.
Onuchin, A. P.
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Skovpen, Yu. I.
Solodov, E. P.
Todyshev, K. Yu.
Bondioli, M.
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PHYSICAL REVIEW D, 2010, 82 (03)
[2] Search for the decay (B)over-bar0 → Λc+(p)over-barp(p)over-bar
Lees, J. P.
Poireau, V.
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Palano, A.
Eigen, G.
Stugu, B.
Brown, D. N.
Kerth, L. T.
Kolomensky, Yu G.
Lee, M. J.
Lynch, G.
Koch, H.
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So, R. Y.
Khan, A.
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Druzhinin, V. P.
Golubev, V. B.
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Skovpen, Yu. I.
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Lankford, A. J.
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Dey, B.
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[3] Measurements of B((B)over-bar0 → Λc+(p)over-bar and B(B- → Λc+(p)over-barπ-) and studies of Λc+π- resonances
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Soni, N.
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[4] Three-Body Baryonic (B)over-bar0→Λc+(p)over-barπ0 Decay
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[5] Observation of the decay (B)over-bar0→Λc+(p)over-bar -: art. no. 121802
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