Search for a Low-Mass Higgs Boson in Υ(3S) → γA0, A0 → τ+ τ- at BABAR

被引：58

作者：

Aubert, B. ^{[1
]}

Karyotakis, Y. ^{[1
]}

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

Poireau, V. ^{[1
]}

Prencipe, E. ^{[1
]}

Prudent, X. ^{[1
]}

Tisserand, V. ^{[1
]}

Garra Tico, J. ^{[2
]}

Grauges, E. ^{[2
]}

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

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

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

Eigen, G. ^{[5
]}

Stugu, B. ^{[5
]}

Sun, L. ^{[5
]}

Battaglia, M. ^{[6
]}

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

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

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

Lynch, G. ^{[6
]}

Osipenkov, I. L. ^{[6
]}

Tackmann, K. ^{[6
]}

Tanabe, T. ^{[6
]}

Hawkes, C. M. ^{[7
]}

Soni, N. ^{[7
]}

Watson, A. T. ^{[7
]}

Koch, H. ^{[8
]}

Schroeder, T. ^{[8
]}

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

Fulsom, B. G. ^{[9
]}

Hearty, C. ^{[9
]}

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

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

Barrett, M. ^{[10
]}

Khan, A. ^{[10
]}

Randle-Conde, A. ^{[10
]}

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

Bukin, A. D. ^{[11
]}

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

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

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

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

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

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

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

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

Bondioli, M. ^{[12
]}

Curry, S. ^{[12
]}

Eschrich, I. ^{[12
]}

Kirkby, D. ^{[12
]}

机构：

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

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

[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 San Diego, La Jolla, CA 92093 USA

[15] Univ Calif Santa Barbara, Santa Barbara, CA 93106 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] Colorado State Univ, Ft Collins, CO 80523 USA

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

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

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

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

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

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

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

[28] Ist Nazl Fis Nucl, Sez Genova, I-16146 Genoa, Italy

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

[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] 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] Ist Nazl Fis Nucl, Sez Milano, I-20133 Milan, Italy

来源：

PHYSICAL REVIEW LETTERS | 2009年 / 103卷 / 18期

基金：

加拿大自然科学与工程研究理事会;

关键词：

BROKEN SYMMETRIES; WEAK INTERACTIONS; PARTICLES; PHYSICS; MODEL;

D O I：

10.1103/PhysRevLett.103.181801

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We search for a light Higgs boson A(0) in the radiative decay Upsilon(3S) -> gamma A(0), A(0) -> tau(+) tau(-), tau(+) -> e(+) nu(e)(nu) over bar (tau) or tau(+) -> mu(+) nu(mu)(nu) over bar (tau) . The data sample contains 122 X 10(6) Upsilon(3S) events recorded with the BABAR detector. We find no evidence for a narrow structure in the studied tau(+) tau(-) invariant mass region of 4.03 < m(tau+ tau-) < 10: 10 GeV= c(2). We exclude at the 90% confidence level (C.L.) a low-mass Higgs boson decaying to tau(+) tau(-) with a product branching fraction B(Upsilon(3S) -> A(0)) B(A(0) -> tau(+) tau(-)) > (1.5 - 16) X 10(-5) across the m(tau+ tau-) range. We also set a 90% C. L. upper limit on the tau(+) tau(-) decay of the eta(b) at B(eta(b) -> tau(+) tau(-)) < 8%.

引用

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