Search for a dark photon in electroproduced e+e- pairs with the Heavy Photon Search experiment at JLab

被引：38

作者：

Adrian, P. H. ^{[1
]}

Baltzell, N. A. ^{[2
]}

Battaglieri, M. ^{[3
]}

Bondi, M. ^{[4
]}

Boyarinov, S. ^{[2
]}

Bueltmann, S. ^{[5
]}

Burkert, V. D. ^{[2
]}

Calvo, D. ^{[6
]}

Carpinelli, M. ^{[7
,8
]}

Celentano, A. ^{[3
]}

Charles, G. ^{[9
]}

Colaneri, L. ^{[10
,11
]}

Cooper, W. ^{[12
]}

Cuevas, C. ^{[2
]}

D'Angelo, A. ^{[10
,11
]}

Dashyan, N. ^{[13
]}

De Napoli, M. ^{[4
]}

De Vita, R. ^{[3
]}

Deur, A. ^{[2
]}

Dupre, R. ^{[9
]}

Egiyan, H. ^{[2
]}

Elouadrhiri, L. ^{[2
]}

Essig, R. ^{[14
]}

Fadeyev, V ^{[15
]}

Field, C. ^{[1
]}

Filippi, A. ^{[6
]}

Freyberger, A. ^{[2
]}

Garcon, M. ^{[16
]}

Gevorgyan, N. ^{[13
]}

Girod, F. X. ^{[2
]}

Graf, N. ^{[1
]}

Graham, M. ^{[1
]}

Griffioen, K. A. ^{[17
]}

Grillo, A. ^{[15
]}

Guidal, M. ^{[9
]}

Herbst, R. ^{[1
]}

Holtrop, M. ^{[18
]}

Jaros, J. ^{[1
]}

Kalicy, G. ^{[5
]}

Khandaker, M. ^{[19
]}

Kubarovsky, V ^{[2
]}

Leonora, E. ^{[4
]}

Livingston, K. ^{[20
]}

Maruyama, T. ^{[1
]}

McCarty, K. ^{[18
]}

McCormick, J. ^{[1
]}

McKinnon, B. ^{[20
]}

Moffeit, K. ^{[20
]}

Moreno, O. ^{[1
,15
]}

Camacho, C. Munoz ^{[9
]}

机构：

[1] Stanford Univ, SLAC Natl Accelerator Lab, Stanford, CA 94309 USA

[2] Thomas Jefferson Natl Accelerator Facil, Newport News, VA 23606 USA

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

[4] Ist Nazl Fis Nucl, Sez Catania, I-95123 Catania, Italy

[5] Old Dominion Univ, Norfolk, VA 23529 USA

[6] Ist Nazl Fis Nucl, Sez Torino, I-10125 Turin, Italy

[7] Univ Sassari, I-07100 Sassari, Italy

[8] Ist Nazl Fis Nucl, Lab Nazl Sud, I-95123 Catania, Italy

[9] Univ Paris Saclay, Univ Paris Sud, Inst Phys Nucl, CNRS IN2P3, F-91406 Orsay, France

[10] Univ Roma Tor Vergata, I-00133 Rome, Italy

[11] Ist Nazl Fis Nucl, Sez Roma Tor Vergata, I-00133 Rome, Italy

[12] Fermilab Natl Accelerator Lab, Batavia, IL 60510 USA

[13] Yerevan Phys Inst, Yerevan 375036, Armenia

[14] SUNY Stony Brook, CN Yang Inst Theoret Phys, Stony Brook, NY 11794 USA

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

[16] Univ Paris Saclay, CEA, IRFU, F-91191 Gif Sur Yvette, France

[17] Coll William & Mary, Williamsburg, VA 23187 USA

[18] Univ New Hampshire, Durham, NH 03824 USA

[19] Idaho State Univ, Pocatello, ID 83209 USA

[20] Univ Glasgow, Glasgow G12 8QQ, Lanark, Scotland

[21] Perimeter Inst, Waterloo, ON N2L 2Y5, Canada

[22] Univ Padua, I-35122 Padua, Italy

[23] Ist Nazl Fis Nucl, Sez Padova, I-16146 Padua, Italy

来源：

PHYSICAL REVIEW D | 2018年 / 98卷 / 09期

基金：

英国科学技术设施理事会; 美国能源部;

关键词：

VECTOR GAUGE BOSON; PHI-MESON DECAYS; PARTICLES; LIMITS;

D O I：

10.1103/PhysRevD.98.091101

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The Heavy Photon Search experiment took its first data in a 2015 engineering run using a 1.056 GeV, 50 nA electron beam provided by CEBAF at the Thomas Jefferson National Accelerator Facility, searching for a prompt, electroproduced dark photon with a mass between 19 and 81 MeV/c(2). A search for a resonance in the e(+)e(-) invariant mass distribution, using 1.7 days (1170 nb(-1)) of data, showed no evidence of dark photon decays above the large QED background, confirming earlier searches and demonstrating the full functionality of the experiment. Upper limits on the square of the coupling of the dark photon to the standard model photon are set at the level of 6 x 10(-6). Future runs with higher luminosity will explore new territory.

引用

页数：6

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