Search for the decay mode B0 → pp(p)over-bar (p)over-bar

被引：5

作者：

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

Poireau, V. ^{[1
]}

Tisserand, V. ^{[1
]}

Grauges, E. ^{[2
]}

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

Eigen, G. ^{[5
]}

Brown, D. N. ^{[6
,7
,36
]}

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

Fritsch, M. ^{[8
]}

Koch, H. ^{[8
]}

Schroeder, T. ^{[8
]}

Hearty, C. ^{[9
,10
]}

Mattison, T. S. ^{[10
]}

McKenna, J. A. ^{[10
]}

So, R. Y. ^{[10
]}

Blinov, V. E. ^{[11
,12
,13
]}

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

Druzhinin, V. P. ^{[11
,12
]}

Golubev, V. B. ^{[11
,12
]}

Kozyrev, E. A. ^{[11
,12
]}

Kravchenko, E. A. ^{[11
,12
]}

Onuchin, A. P. ^{[11
,12
,13
]}

Serednyakov, S. I. ^{[11
,12
]}

Skovpen, Yu. I. ^{[11
,12
]}

Solodov, E. P. ^{[11
,12
]}

Todyshev, K. Yu. ^{[11
,12
]}

Lankford, A. J. ^{[14
]}

Gary, J. W. ^{[15
]}

Long, O. ^{[15
]}

Eisner, A. M. ^{[16
]}

Lockman, W. S. ^{[16
]}

Vazquez, W. Panduro ^{[16
]}

Chao, D. S. ^{[17
]}

Cheng, C. H. ^{[17
]}

Echenard, B. ^{[17
]}

Flood, K. T. ^{[17
]}

Hitlin, D. G. ^{[17
]}

Kim, J. ^{[17
]}

Li, Y. ^{[17
]}

Miyashita, T. S. ^{[17
]}

Ongmongkolkul, P. ^{[17
]}

Porter, F. C. ^{[17
]}

Rohrken, M. ^{[17
]}

Huard, Z. ^{[18
]}

Meadows, B. T. ^{[18
]}

Pushpawela, B. G. ^{[18
]}

Sokoloff, M. D. ^{[18
]}

Sun, L. ^{[18
,85
]}

Smith, J. G. ^{[19
]}

Wagner, S. R. ^{[19
]}

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] Univ Bari, 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] 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] Inst Particle Phys, Vancouver, BC V6T 1Z1, Canada

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

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

[12] Novosibirsk State Univ, Novosibirsk 630090, Russia

[13] Novosibirsk State Tech Univ, Novosibirsk 630092, Russia

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

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

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

[17] CALTECH, Pasadena, CA 91125 USA

[18] Univ Cincinnati, Cincinnati, OH 45221 USA

[19] Univ Colorado, Boulder, CO 80309 USA

[20] CNRS, IN2P3, Lab Leprince Ringuet, Ecole Polytech, F-91125 Palaiseau, France

[21] INFN, Sez Ferrara, I-44122 Ferrara, Italy

[22] Univ Ferrara, Dipartimento Fis & Sci Terra, I-44122 Ferrara, Italy

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

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

[25] Humboldt Univ, Inst Phys, D-12489 Berlin, Germany

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

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

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

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

[30] CNRS, IN2P3, Lab Accerateur Lineaire, F-91898 Orsay, France

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

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

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

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

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

[36] Univ Louisville, Louisville, KY 40292 USA

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

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

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

[40] MIT, Lab Nucl Sci, 77 Massachusetts Ave, Cambridge, MA 02139 USA

[41] Inst Particle Phys, Montreal, PQ H3A 2T8, Canada

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

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

[44] Univ Milan, Dipartimento Fis, I-20133 Milan, Italy

[45] Univ Mississippi, University, MS 38677 USA

[46] Univ Montreal, Phys Particules, Montreal, PQ H3C 3J7, Canada

[47] Univ Napoli Federico II, INFN, Sez Napoli, I-80126 Naples, Italy

[48] Univ Napoli Federico II, Dipartimento Sci Fis, I-80126 Naples, Italy

[49] Natl Inst Nucl Phys & High Energy Phys, NIKHEF, NL-1009 DB Amsterdam, Netherlands

[50] Univ Notre Dame, Notre Dame, IN 46556 USA

来源：

PHYSICAL REVIEW D | 2018年 / 98卷 / 07期

基金：

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

关键词：

BABAR DETECTOR; PHYSICS;

D O I：

10.1103/PhysRevD.98.071102

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

A search is presented for the four-body decay B-0 -> pp (p) over bar (p) over bar in a sample of 471 million B (B) over bar pairs collected with the BABAR detector, operated at the SLAC PEP-II asymmetric-energy e(+) e(-) collider. The center-of-mass energy is 10.58 GeV. From a fit to the distribution of the energy-substituted mass m(ES), the branching fraction B(B-0 -> pp (p) over bar (p) over bar) = (1.1 +/- 0.5 +/- 0.2) x 10(-7) is extracted, where the first uncertainty is statistical and the second is systematic. The significance of the signal, including the systematic uncertainty, is 2.9 standard deviations. The upper limit on the branching fraction is determined to be 2.0 x 10(-7) at 90% confidence level.

引用

页数：7

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