Searches for low-mass dimuon resonances

LHCb collaboration

doi:10.1007/JHEP10(2020)156

Searches for low-mass dimuon resonances

LHCb collaboration

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

Abstract

Searches are performed for a low-mass dimuon resonance, X, produced in proton-proton collisions at a center-of-mass energy of 13 TeV, using a data sample corresponding to an integrated luminosity of 5.1 fb ⁻¹ and collected with the LHCb detector. The X bosons can either decay promptly or displaced from the proton-proton collision, where in both cases the requirements placed on the event and the assumptions made about the production mechanisms are kept as minimal as possible. The searches for promptly decaying X bosons explore the mass range from near the dimuon threshold up to 60 GeV, with nonnegligible X widths considered above 20 GeV. The searches for displaced X → μ ⁺μ ⁻ decays consider masses up to 3 GeV. None of the searches finds evidence for a signal and 90% confidence-level exclusion limits are placed on the X → μ ⁺μ ⁻ cross sections, each with minimal model dependence. In addition, these results are used to place world-leading constraints on GeV-scale bosons in the two-Higgs-doublet and hidden-valley scenarios. [Figure not available: see fulltext.].

Original language	English
Article number	156
Number of pages	26
Journal	Journal of High Energy Physics
Volume	2020
Issue number	10
DOIs	https://doi.org/10.1007/JHEP10(2020)156
Publication status	Published - 26 Oct 2020

Keywords

beyond standard model
decay
exotics
hadron-hadron scattering (experiments)
hdecay
u(1)s
DECAY
Beyond Standard Model
Hadron-Hadron scattering (experiments)
Exotics
U(1)S
HDECAY

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Cite this

@article{02a851d415c34157ad95b73f66dc6db7,

title = "Searches for low-mass dimuon resonances",

abstract = "Searches are performed for a low-mass dimuon resonance, X, produced in proton-proton collisions at a center-of-mass energy of 13 TeV, using a data sample corresponding to an integrated luminosity of 5.1 fb −1 and collected with the LHCb detector. The X bosons can either decay promptly or displaced from the proton-proton collision, where in both cases the requirements placed on the event and the assumptions made about the production mechanisms are kept as minimal as possible. The searches for promptly decaying X bosons explore the mass range from near the dimuon threshold up to 60 GeV, with nonnegligible X widths considered above 20 GeV. The searches for displaced X → μ +μ − decays consider masses up to 3 GeV. None of the searches finds evidence for a signal and 90% confidence-level exclusion limits are placed on the X → μ +μ − cross sections, each with minimal model dependence. In addition, these results are used to place world-leading constraints on GeV-scale bosons in the two-Higgs-doublet and hidden-valley scenarios. [Figure not available: see fulltext.].",

keywords = "beyond standard model, decay, exotics, hadron-hadron scattering (experiments), hdecay, u(1)s, DECAY, Beyond Standard Model, Hadron-Hadron scattering (experiments), Exotics, U(1)S, HDECAY",

author = "R. Aaij and C.A. Beteta and T. Ackernley and B. Adeva and M. Adinolfi and H. Afsharnia and C.A. Aidala and S. Aiola and Z. Ajaltouni and S. Akar and J. Albrecht and F. Alessio and M. Alexander and A.A. Albero and Z. Aliouche and G. Alkhazov and P.A. Cartelle and A.A. Alves and S. Amato and Y. Amhis and L. An and L. Anderlini and G. Andreassi and A. Andreianov and M. Andreotti and F. Archilli and A. Artamonov and M. Artuso and K. Arzymatov and E. Aslanides and M. Atzeni and B. Audurier and S. Bachmann and M. Bachmayer and J.J. Back and S. Baker and P.B. Rodriguez and V. Balagura and W. Baldini and J.B. Leite and R.J. Barlow and S. Barsuk and W. Barter and M. Bartolini and F. Baryshnikov and J.M. Basels and G. Bassi and V. Batozskaya and B. Batsukh and A. Battig and {LHCb collaboration} and {de Vries}, Jacco and Marcel Merk",

note = "Publisher Copyright: {\textcopyright} 2020, The Author(s).",

year = "2020",

month = oct,

day = "26",

doi = "10.1007/JHEP10(2020)156",

language = "English",

volume = "2020",

journal = "Journal of High Energy Physics",

issn = "1029-8479",

publisher = "Springer Verlag",

number = "10",

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TY - JOUR

T1 - Searches for low-mass dimuon resonances

AU - Aaij, R.

AU - Beteta, C.A.

AU - Ackernley, T.

AU - Adeva, B.

AU - Adinolfi, M.

AU - Afsharnia, H.

AU - Aidala, C.A.

AU - Aiola, S.

AU - Ajaltouni, Z.

AU - Akar, S.

AU - Albrecht, J.

AU - Alessio, F.

AU - Alexander, M.

AU - Albero, A.A.

AU - Aliouche, Z.

AU - Alkhazov, G.

AU - Cartelle, P.A.

AU - Alves, A.A.

AU - Amato, S.

AU - Amhis, Y.

AU - An, L.

AU - Anderlini, L.

AU - Andreassi, G.

AU - Andreianov, A.

AU - Andreotti, M.

AU - Archilli, F.

AU - Artamonov, A.

AU - Artuso, M.

AU - Arzymatov, K.

AU - Aslanides, E.

AU - Atzeni, M.

AU - Audurier, B.

AU - Bachmann, S.

AU - Bachmayer, M.

AU - Back, J.J.

AU - Baker, S.

AU - Rodriguez, P.B.

AU - Balagura, V.

AU - Baldini, W.

AU - Leite, J.B.

AU - Barlow, R.J.

AU - Barsuk, S.

AU - Barter, W.

AU - Bartolini, M.

AU - Baryshnikov, F.

AU - Basels, J.M.

AU - Bassi, G.

AU - Batozskaya, V.

AU - Batsukh, B.

AU - Battig, A.

AU - LHCb collaboration

AU - de Vries, Jacco

AU - Merk, Marcel

PY - 2020/10/26

Y1 - 2020/10/26

N2 - Searches are performed for a low-mass dimuon resonance, X, produced in proton-proton collisions at a center-of-mass energy of 13 TeV, using a data sample corresponding to an integrated luminosity of 5.1 fb −1 and collected with the LHCb detector. The X bosons can either decay promptly or displaced from the proton-proton collision, where in both cases the requirements placed on the event and the assumptions made about the production mechanisms are kept as minimal as possible. The searches for promptly decaying X bosons explore the mass range from near the dimuon threshold up to 60 GeV, with nonnegligible X widths considered above 20 GeV. The searches for displaced X → μ +μ − decays consider masses up to 3 GeV. None of the searches finds evidence for a signal and 90% confidence-level exclusion limits are placed on the X → μ +μ − cross sections, each with minimal model dependence. In addition, these results are used to place world-leading constraints on GeV-scale bosons in the two-Higgs-doublet and hidden-valley scenarios. [Figure not available: see fulltext.].

AB - Searches are performed for a low-mass dimuon resonance, X, produced in proton-proton collisions at a center-of-mass energy of 13 TeV, using a data sample corresponding to an integrated luminosity of 5.1 fb −1 and collected with the LHCb detector. The X bosons can either decay promptly or displaced from the proton-proton collision, where in both cases the requirements placed on the event and the assumptions made about the production mechanisms are kept as minimal as possible. The searches for promptly decaying X bosons explore the mass range from near the dimuon threshold up to 60 GeV, with nonnegligible X widths considered above 20 GeV. The searches for displaced X → μ +μ − decays consider masses up to 3 GeV. None of the searches finds evidence for a signal and 90% confidence-level exclusion limits are placed on the X → μ +μ − cross sections, each with minimal model dependence. In addition, these results are used to place world-leading constraints on GeV-scale bosons in the two-Higgs-doublet and hidden-valley scenarios. [Figure not available: see fulltext.].

KW - beyond standard model

KW - decay

KW - exotics

KW - hadron-hadron scattering (experiments)

KW - hdecay

KW - u(1)s

KW - DECAY

KW - Beyond Standard Model

KW - Hadron-Hadron scattering (experiments)

KW - Exotics

KW - U(1)S

KW - HDECAY

U2 - 10.1007/JHEP10(2020)156

DO - 10.1007/JHEP10(2020)156

M3 - Article

SN - 1029-8479

VL - 2020

JO - Journal of High Energy Physics

JF - Journal of High Energy Physics

IS - 10

M1 - 156

ER -