TY - JOUR
T1 - Searches for low-mass dimuon resonances
AU - LHCb Collaboration
AU - Aaij, R.
AU - Abellán Beteta, C.
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 - Alfonso Albero, A.
AU - Aliouche, Z.
AU - Alkhazov, G.
AU - Alvarez Cartelle, P.
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 - Bifani, S.
AU - Calladine, R.
AU - Chatzikonstantinidis, G.
AU - Cooke, N.
AU - Farley, N.
AU - Griffith, P.
AU - Ilten, P.
AU - Parkinson, C. J.
AU - Plews, J.
AU - Popov, D.
AU - Sergi, A.
AU - Slater, M. W.
AU - Swallow, P. N.
AU - Watson, N. K.
AU - Zarebski, K. A.
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 - Exotics
KW - Hadron-Hadron scattering (experiments)
UR - http://www.scopus.com/inward/record.url?scp=85094101918&partnerID=8YFLogxK
U2 - 10.1007/JHEP10(2020)156
DO - 10.1007/JHEP10(2020)156
M3 - Article
AN - SCOPUS:85094101918
SN - 1126-6708
VL - 2020
JO - Journal of High Energy Physics
JF - Journal of High Energy Physics
IS - 10
M1 - 156
ER -