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http://hdl.handle.net/2445/174990
Title: | Search for A ' -> mu(+)mu(-) Decays |
Author: | Alfonso Albero, Alejandro Calvo Gómez, Míriam Camboni, Alessandro Coquereau, Samuel Garrido Beltrán, Lluís Gascón Fora, David Gironella Gironell, Pere Graciani Díaz, Ricardo Graugés Pous, Eugeni Manera Escalero, R. Vázquez Gómez, Ricard Vilasis-Cardona, Xavier LHCb Collaboration |
Keywords: | Fotons Gran Col·lisionador d'Hadrons Photons Large Hadron Collider (France and Switzerland) |
Issue Date: | 29-Jan-2020 |
Publisher: | American Physical Society |
Abstract: | Searches are performed for both promptlike and long-lived dark photons, A′, produced in proton-proton collisions at a center-of-mass energy of 13 TeV. These searches look for A′→μ+μ− decays using a data sample corresponding to an integrated luminosity of 5.5 fb−1 collected with the LHCb detector. Neither search finds evidence for a signal, and 90% confidence-level exclusion limits are placed on the γ-A′ kinetic mixing strength. The promptlike A′ search explores the mass region from near the dimuon threshold up to 70 GeV and places the most stringent constraints to date on dark photons with 214<m(A′)≲740 MeV and 10.6<m(A′)≲30 GeV. The search for long-lived A′→μ+μ− decays places world-leading constraints on low-mass dark photons with lifetimes O(1) ps |
Note: | Reproducció del document publicat a: https://doi.org/10.1103/PhysRevLett.124.041801 |
It is part of: | Physical Review Letters, 2020, vol. 124, num. 4, p. 041801 |
URI: | http://hdl.handle.net/2445/174990 |
Related resource: | https://doi.org/10.1103/PhysRevLett.124.041801 |
ISSN: | 0031-9007 |
Appears in Collections: | Articles publicats en revistes (Física Quàntica i Astrofísica) Articles publicats en revistes (Institut de Ciències del Cosmos (ICCUB)) |
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