Search for a Dark Photon in e+e- Collisions at BABAR

被引：387

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
,44
]}

Feng, M. ^{[6
,7
]}

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

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

Lee, M. J. ^{[6
,7
]}

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

Koch, H. ^{[8
]}

Schroeder, T. ^{[8
]}

Hearty, C. ^{[9
]}

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

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

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

Khan, A. ^{[10
]}

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

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

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

Golubev, V. B. ^{[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
]}

Mandelkern, M. ^{[14
]}

Dey, B. ^{[15
]}

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

Long, O. ^{[15
]}

Campagnari, C. ^{[16
]}

Sevilla, M. Franco ^{[16
]}

Hong, T. M. ^{[16
]}

Kovalskyi, D. ^{[16
]}

Richman, J. D. ^{[16
]}

West, C. A. ^{[16
]}

Eisner, A. M. ^{[17
]}

Lockman, W. S. ^{[17
]}

Vazquez, W. Panduro ^{[17
]}

Schumm, B. A. ^{[17
]}

Seiden, A. ^{[17
]}

Chao, D. S. ^{[18
]}

Cheng, C. H. ^{[18
]}

Echenard, B. ^{[18
]}

Flood, K. T. ^{[18
]}

机构：

[1] Univ Savoie, Lab Annecy le Vieux Phys Particules LAPP, IN2P3, CNRS, 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, 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 SB RAS, 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 Barbara, Santa Barbara, CA 93106 USA

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

[18] CALTECH, Pasadena, CA 91125 USA

[19] Univ Cincinnati, Cincinnati, OH 45221 USA

[20] Univ Colorado, Boulder, CO 80309 USA

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

[22] Tech Univ Dortmund, D-44221 Dortmund, 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-44122 Ferrara, Italy

[26] Univ Ferrara, Dipartimento Fis & Sci Terra, I-44122 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] Indian Inst Technol Guwahati, Gauhati 781039, Assam, India

[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] Jazan Univ, Dept Phys, Jazan 22822, Saudi Arabia

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

[38] CNRS, IN2P3, Accelerateur Lineaire Lab, 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] 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 | 2014年 / 113卷 / 20期

基金：

美国国家科学基金会; 加拿大自然科学与工程研究理事会;

关键词：

BHABHA SCATTERING; DETECTOR; BOSON;

D O I：

10.1103/PhysRevLett.113.201801

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Dark sectors charged under a new Abelian interaction have recently received much attention in the context of dark matter models. These models introduce a light new mediator, the so-called dark photon (A'), connecting the dark sector to the standard model. We present a search for a dark photon in the reaction e(+)e(-) ->gamma A', A' -> e(+)e(-), mu(+) mu(-) using 514 fb(-1) of data collected with the BABAR detector. We observe no statistically significant deviations from the standard model predictions, and we set 90% confidence level upper limits on the mixing strength between the photon and dark photon at the level of 10(-4) - 10(-3) for dark photon masses in the range 0.02-10.2 GeV. We further constrain the range of the parameter space favored by interpretations of the discrepancy between the calculated and measured anomalous magnetic moment of the muon.

引用

页数：8

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