Dark photon search in the mass range between 1.5 and 3.4 GeV/c2

M. Ablikim; M. N. Achasov; X. C. Ai; O.  Albayrak; M. Albrecht; D. J. Ambrose; A. Amoroso; Z. Haddadi; N. Kalantar-Nayestanaki; M. Kavatsyuk; H. Löhner; J. G. Messchendorp; M. Tiemens; BESIII Collaboration

doi:10.1016/j.physletb.2017.09.067

Dark photon search in the mass range between 1.5 and 3.4 GeV/c²

M. Ablikim, M. N. Achasov, X. C. Ai, O. Albayrak, M. Albrecht, D. J. Ambrose, A. Amoroso, Z. Haddadi, N. Kalantar-Nayestanaki, M. Kavatsyuk, H. Löhner, J. G. Messchendorp, M. Tiemens, BESIII Collaboration

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Abstract

Using a data set of 2.93 fb−1 taken at a center-of-mass energy s=3.773 GeV with the BESIII detector at the BEPCII collider, we perform a search for an extra U(1) gauge boson, also denoted as a dark photon. We examine the initial state radiation reactions e+e−→e+e−γISR and e+e−→μ+μ−γISR for this search, where the dark photon would appear as an enhancement in the invariant mass distribution of the leptonic pairs. We observe no obvious enhancement in the mass range between 1.5 and 3.4 GeV/c2 and set a 90% confidence level upper limit on the mixing strength of the dark photon and the Standard Model photon. We obtain a competitive limit in the tested mass range.

Original language	English
Pages (from-to)	252-257
Number of pages	6
Journal	Physics Letters B
Volume	774
DOIs	https://doi.org/10.1016/j.physletb.2017.09.067
Publication status	Published - 10-Nov-2017

Keywords

PI(0)
LIMIT
ELECTRON-BEAM-DUMP
KLOE EXPERIMENT
VECTOR BOSON
FLAVOR FACTORIES
CROSS-SECTION
U-GAMMA
E(+)E(-)
DECAYS

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Ablikim, M., Achasov, M. N., Ai, X. C., Albayrak, O., Albrecht, M., Ambrose, D. J., Amoroso, A., Haddadi, Z., Kalantar-Nayestanaki, N., Kavatsyuk, M., Löhner, H., Messchendorp, J. G., Tiemens, M., & BESIII Collaboration (2017). Dark photon search in the mass range between 1.5 and 3.4 GeV/c². Physics Letters B, 774, 252-257. https://doi.org/10.1016/j.physletb.2017.09.067

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title = "Dark photon search in the mass range between 1.5 and 3.4 GeV/c2",

abstract = "Using a data set of 2.93 fb−1 taken at a center-of-mass energy s=3.773 GeV with the BESIII detector at the BEPCII collider, we perform a search for an extra U(1) gauge boson, also denoted as a dark photon. We examine the initial state radiation reactions e+e−→e+e−γISR and e+e−→μ+μ−γISR for this search, where the dark photon would appear as an enhancement in the invariant mass distribution of the leptonic pairs. We observe no obvious enhancement in the mass range between 1.5 and 3.4 GeV/c2 and set a 90% confidence level upper limit on the mixing strength of the dark photon and the Standard Model photon. We obtain a competitive limit in the tested mass range.",

keywords = " PI(0), LIMIT, ELECTRON-BEAM-DUMP, KLOE EXPERIMENT, VECTOR BOSON, FLAVOR FACTORIES, CROSS-SECTION, U-GAMMA, E(+)E(-), DECAYS",

author = "M. Ablikim and Achasov, {M. N.} and Ai, {X. C.} and O. Albayrak and M. Albrecht and Ambrose, {D. J.} and A. Amoroso and Z. Haddadi and N. Kalantar-Nayestanaki and M. Kavatsyuk and H. L{\"o}hner and Messchendorp, {J. G.} and M. Tiemens and {BESIII Collaboration}",

year = "2017",

month = nov,

day = "10",

doi = "10.1016/j.physletb.2017.09.067",

language = "English",

volume = "774",

pages = "252--257",

journal = "Physics Letters B",

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TY - JOUR

T1 - Dark photon search in the mass range between 1.5 and 3.4 GeV/c2

AU - Ablikim, M.

AU - Achasov, M. N.

AU - Ai, X. C.

AU - Albayrak, O.

AU - Albrecht, M.

AU - Ambrose, D. J.

AU - Amoroso, A.

AU - Haddadi, Z.

AU - Kalantar-Nayestanaki, N.

AU - Kavatsyuk, M.

AU - Löhner, H.

AU - Messchendorp, J. G.

AU - Tiemens, M.

AU - BESIII Collaboration

PY - 2017/11/10

Y1 - 2017/11/10

N2 - Using a data set of 2.93 fb−1 taken at a center-of-mass energy s=3.773 GeV with the BESIII detector at the BEPCII collider, we perform a search for an extra U(1) gauge boson, also denoted as a dark photon. We examine the initial state radiation reactions e+e−→e+e−γISR and e+e−→μ+μ−γISR for this search, where the dark photon would appear as an enhancement in the invariant mass distribution of the leptonic pairs. We observe no obvious enhancement in the mass range between 1.5 and 3.4 GeV/c2 and set a 90% confidence level upper limit on the mixing strength of the dark photon and the Standard Model photon. We obtain a competitive limit in the tested mass range.

AB - Using a data set of 2.93 fb−1 taken at a center-of-mass energy s=3.773 GeV with the BESIII detector at the BEPCII collider, we perform a search for an extra U(1) gauge boson, also denoted as a dark photon. We examine the initial state radiation reactions e+e−→e+e−γISR and e+e−→μ+μ−γISR for this search, where the dark photon would appear as an enhancement in the invariant mass distribution of the leptonic pairs. We observe no obvious enhancement in the mass range between 1.5 and 3.4 GeV/c2 and set a 90% confidence level upper limit on the mixing strength of the dark photon and the Standard Model photon. We obtain a competitive limit in the tested mass range.

KW - PI(0)

KW - LIMIT

KW - ELECTRON-BEAM-DUMP

KW - KLOE EXPERIMENT

KW - VECTOR BOSON

KW - FLAVOR FACTORIES

KW - CROSS-SECTION

KW - U-GAMMA

KW - E(+)E(-)

KW - DECAYS

U2 - 10.1016/j.physletb.2017.09.067

DO - 10.1016/j.physletb.2017.09.067

M3 - Article

SN - 0370-2693

VL - 774

SP - 252

EP - 257

JO - Physics Letters B

JF - Physics Letters B

ER -