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

(B a B ar Collaboration)

doi:10.1103/PhysRevLett.125.181801

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

(B a B ar Collaboration)

School of Physics and Astronomy

Research output: Contribution to journal › Article › peer-review

Abstract

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 (φL) would be produced predominantly through radiation from a τ lepton. We report herein a search for e+e-→τ+τ-φL, φL→ℓ+ℓ- (ℓ=e, μ) using data collected by the BABAR experiment at SLAC. No significant signal is observed, and we set limits on the φL coupling to leptons in the range 0.04<mφL<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.

Original language	English
Article number	181801
Journal	Physical Review Letters
Volume	125
Issue number	18
DOIs	https://doi.org/10.1103/PhysRevLett.125.181801
State	Published - 28 Oct 2020

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10.1103/PhysRevLett.125.181801

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@article{a13b1bd8e8e34840ab15740d97a6912c,

title = "Search for a Dark Leptophilic Scalar in e+e- Collisions",

abstract = "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 (φL) would be produced predominantly through radiation from a τ lepton. We report herein a search for e+e-→τ+τ-φL, φL→ℓ+ℓ- (ℓ=e, μ) using data collected by the BABAR experiment at SLAC. No significant signal is observed, and we set limits on the φL coupling to leptons in the range 0.04",

author = "{(B a B ar Collaboration)} and Lees, {J. P.} and V. Poireau and V. Tisserand and E. Grauges and A. Palano and G. Eigen and Brown, {D. N.} and Kolomensky, {Yu G.} and M. Fritsch and H. Koch and T. Schroeder and R. Cheaib and C. Hearty and Mattison, {T. S.} and McKenna, {J. A.} and So, {R. Y.} and Blinov, {V. E.} and Buzykaev, {A. R.} and Druzhinin, {V. P.} and Golubev, {V. B.} and Kozyrev, {E. A.} and Kravchenko, {E. A.} and Onuchin, {A. P.} and Serednyakov, {S. I.} and Skovpen, {Yu I.} and Solodov, {E. P.} and Todyshev, {K. Yu} and Lankford, {A. J.} and B. Dey and Gary, {J. W.} and O. Long and Eisner, {A. M.} and Lockman, {W. S.} and {Panduro Vazquez}, W. and Chao, {D. S.} and Cheng, {C. H.} and B. Echenard and Flood, {K. T.} and Hitlin, {D. G.} and J. Kim and Y. Li and Lin, {D. X.} and Miyashita, {T. S.} and P. Ongmongkolkul and J. Oyang and Porter, {F. C.} and M. R{\"o}hrken and Z. Huard and Meadows, {B. T.} and A. Soffer",

note = "Publisher Copyright: {\textcopyright} 2020 authors. Published by the American Physical Society. Funded by SCOAP3.",

year = "2020",

month = oct,

day = "28",

doi = "10.1103/PhysRevLett.125.181801",

language = "אנגלית",

volume = "125",

journal = "Physical Review Letters",

issn = "0031-9007",

publisher = "American Physical Society",

number = "18",

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TY - JOUR

T1 - Search for a Dark Leptophilic Scalar in e+e- Collisions

AU - (B a B ar Collaboration)

AU - Lees, J. P.

AU - Poireau, V.

AU - Tisserand, V.

AU - Grauges, E.

AU - Palano, A.

AU - Eigen, G.

AU - Brown, D. N.

AU - Kolomensky, Yu G.

AU - Fritsch, M.

AU - Koch, H.

AU - Schroeder, T.

AU - Cheaib, R.

AU - Hearty, C.

AU - Mattison, T. S.

AU - McKenna, J. A.

AU - So, R. Y.

AU - Blinov, V. E.

AU - Buzykaev, A. R.

AU - Druzhinin, V. P.

AU - Golubev, V. B.

AU - Kozyrev, E. A.

AU - Kravchenko, E. A.

AU - Onuchin, A. P.

AU - Serednyakov, S. I.

AU - Skovpen, Yu I.

AU - Solodov, E. P.

AU - Todyshev, K. Yu

AU - Lankford, A. J.

AU - Dey, B.

AU - Gary, J. W.

AU - Long, O.

AU - Eisner, A. M.

AU - Lockman, W. S.

AU - Panduro Vazquez, W.

AU - Chao, D. S.

AU - Cheng, C. H.

AU - Echenard, B.

AU - Flood, K. T.

AU - Hitlin, D. G.

AU - Kim, J.

AU - Li, Y.

AU - Lin, D. X.

AU - Miyashita, T. S.

AU - Ongmongkolkul, P.

AU - Oyang, J.

AU - Porter, F. C.

AU - Röhrken, M.

AU - Huard, Z.

AU - Meadows, B. T.

AU - Soffer, A.

PY - 2020/10/28

Y1 - 2020/10/28

N2 - 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 (φL) would be produced predominantly through radiation from a τ lepton. We report herein a search for e+e-→τ+τ-φL, φL→ℓ+ℓ- (ℓ=e, μ) using data collected by the BABAR experiment at SLAC. No significant signal is observed, and we set limits on the φL coupling to leptons in the range 0.04

AB - 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 (φL) would be produced predominantly through radiation from a τ lepton. We report herein a search for e+e-→τ+τ-φL, φL→ℓ+ℓ- (ℓ=e, μ) using data collected by the BABAR experiment at SLAC. No significant signal is observed, and we set limits on the φL coupling to leptons in the range 0.04

UR - http://www.scopus.com/inward/record.url?scp=85094897709&partnerID=8YFLogxK

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DO - 10.1103/PhysRevLett.125.181801

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AN - SCOPUS:85094897709

VL - 125

JO - Physical Review Letters

JF - Physical Review Letters

SN - 0031-9007

IS - 18

M1 - 181801

ER -

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

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