Search for a Dark Leptophilic Scalar in e+ e- Collisions

被引：0

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
]}

Cheaib, R. ^{[10
]}

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
]}

Dey, B. ^{[15
]}

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
]}

Lin, D. X. ^{[17
]}

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

Ongmongkolkul, P. ^{[17
]}

Oyang, J. ^{[17
]}

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

Rohrken, M. ^{[17
]}

Huard, Z. ^{[18
]}

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

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

机构：

[1] Univ Savoie, Lab Annecy le Vieux Phys Particules LAPP, CNRS IN2P3, 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-170126 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 Exot 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] 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 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] Ecole Polytech, Lab Leprince Ringuet, CNRS IN2P3, F-91128 Palaiseau, France

[21] Ist Nazl Fis Nucl, Sez Ferrara, I-44122 Ferrara, Italy

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

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

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

[25] Harvey Mudd Coll, Claremont, CA 91711 USA

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

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

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

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

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

[31] Univ Paris Saclay, IJCLab, CNRS IN2P3, F-91405 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, Cambridge, MA 02139 USA

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

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

[43] Ist Nazl Fis Nucl, 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, Sez Napoli, Ist Nazl Fis Nucl, 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 LETTERS | 2020年 / 125卷 / 18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：

BHABHA SCATTERING; BABAR DETECTOR;

D O I：

10.1103/PhysRevLett.125.181801

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Many scenarios of physics beyond the standard model predict the existence of new gauge singlets, which might be substantially lighter than the weak scale. The experimental constraints on additional scalars with masses in the MeV to GeV range could be significantly weakened if they interact predominantly with leptons rather than quarks. At an e(+) e(-) collider, such a leptophilic scalar (phi(L)) would be produced predominantly through radiation from a tau lepton. We report herein a search for e(+) e(- )-> tau(+) tau(-)phi(L), phi(L)-> l(+) l(-) (l = e, mu) using data collected by the BABAR experiment at SLAC. No significant signal is observed, and we set limits on the phi(L) coupling to leptons in the range 0.04 < m phi(L) < 7.0 GeV. These bounds significantly improve upon the current constraints, excluding almost entirely the parameter space favored by the observed discrepancy in the muon anomalous magnetic moment below 4 GeV at 90% confidence level.

引用

页数：8

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