Search for di-muon decays of a low-mass Higgs boson in radiative decays of the Γ(1S)

被引：26

作者：

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

Poireau, V. ^{[1
]}

Tisserand, V. ^{[1
]}

Garra Tico, J. ^{[2
]}

Grauges, E. ^{[2
]}

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

Eigen, G. ^{[5
]}

Stugu, B. ^{[5
]}

Brown, D. N. ^{[6
,7
,44
]}

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
]}

Bondioli, M. ^{[12
]}

Kirkby, D. ^{[12
]}

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

Mandelkern, M. ^{[12
]}

Atmacan, H. ^{[13
]}

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

Liu, F. ^{[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
]}

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] Ist Nazl Fis Nucl, Sez Bari, I-70126 Bari, Italy

[4] Univ Bari, Dipartimento 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] Ist Nazl Fis Nucl, Sez Ferrara, I-44100 Ferrara, Italy

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

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

[27] Ist Nazl Fis Nucl, 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] Harvey Mudd Coll, Claremont, CA 91711 USA

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

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

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

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

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

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

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

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

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

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

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

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

[44] Univ Louisville, Louisville, KY 40292 USA

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

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

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

[48] Univ Massachusetts, Amherst, MA 01003 USA

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

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

来源：

PHYSICAL REVIEW D | 2013年 / 87卷 / 03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：

D O I：

10.1103/PhysRevD.87.031102

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We search for di-muon decays of a low-mass Higgs boson (A(0)) produced in radiative Gamma(1S) decays. The Gamma(1S) sample is selected by tagging the pion pair in the Gamma(2S, 3S) -> pi(+)pi(-) Gamma(1S) transitions, using a data sample of 92.8 x 10(6) Gamma(2S) and 116.8 x 10(6) Gamma(3S) events collected by the BABAR detector. We find no evidence for A(0) production and set 90% confidence level upper limits on the product branching fraction B(Gamma(1S) -> gamma Lambda(0)) x B(Lambda(0)->mu(+)mu(-)) in the range of (0.28 - 9.7) x 10(-6) for 0.212 <= m(A0) <= 9.20 GeV/c(2). The results are combined with our previous measurements of Gamma(2S,3S) -> gamma Lambda(0), Lambda(0) -> mu(+)mu(-) to set limits on the effective coupling of the b quark to the Lambda(0). DOI: 10.1103/PhysRevD.87.031102

引用

页数：8

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