Search for lepton flavour violating decays of heavy resonances and quantum black holes to an eμ pair in proton–proton collisions at √s = 8 TeV
dc.contributor.author
CMS Collaboration
dc.contributor.author
Khachatryan, Vardan
dc.contributor.author
Bachmair, Felix
dc.contributor.author
Bäni, Lukas
dc.contributor.author
Bianchini, Lorenzo
dc.contributor.author
Casal, Bruno
dc.contributor.author
Dissertori, Günther
dc.contributor.author
Dittmar, Michael
dc.contributor.author
Donegà, Mauro
dc.contributor.author
Eller, Philipp
dc.contributor.author
Grab, Christoph
dc.contributor.author
Heidegger, Constantin
dc.contributor.author
Hits, Dmitry
dc.contributor.author
Hoss, Jan
dc.contributor.author
Kasieczka, Gregor
dc.contributor.author
Lecomte, Pierre
dc.contributor.author
Lustermann, Werner
dc.contributor.author
Mangano, Boris
dc.contributor.author
Marionneau, Matthieu
dc.contributor.author
Martinez Ruiz del Arbol, Pablo
dc.contributor.author
Masciovecchio, Mario
dc.contributor.author
Meinhard, Maren T.
dc.contributor.author
Meister, Daniel
dc.contributor.author
Micheli, Francesco
dc.contributor.author
Musella, Pasquale
dc.contributor.author
Nessi-Tedaldi, Francesca
dc.contributor.author
Pandolfi, Francesco
dc.contributor.author
Pata, Joosep
dc.contributor.author
Pauss, Felicitas
dc.contributor.author
Perrozzi, Luca
dc.contributor.author
Quittnat, Milena
dc.contributor.author
Rossini, Marco
dc.contributor.author
Schönenberger, Myriam
dc.contributor.author
Starodumov, Andrey
dc.contributor.author
Takahashi, Maiko
dc.contributor.author
Tavolaro, Vittorio R.
dc.contributor.author
Theofilatos, Konstantinos
dc.contributor.author
Wallny, Rainer
dc.contributor.author
et al.
dc.date.accessioned
2018-04-27T16:04:25Z
dc.date.available
2017-06-12T10:13:28Z
dc.date.available
2018-04-27T16:04:25Z
dc.date.issued
2016-06
dc.identifier.issn
1434-6044
dc.identifier.issn
1434-6052
dc.identifier.other
10.1140/epjc/s10052-016-4149-y
en_US
dc.identifier.uri
http://hdl.handle.net/20.500.11850/119051
dc.identifier.doi
10.3929/ethz-b-000119051
dc.description.abstract
A search for narrow resonances decaying to an electron and a muon is presented. The e μ mass spectrum is also investigated for non-resonant contributions from the production of quantum black holes (QBHs). The analysis is performed using data corresponding to an integrated luminosity of 19.7 fb-1 collected in proton-proton collisions at a centre-of-mass energy of 8 TeV with the CMS detector at the LHC. With no evidence for physics beyond the standard model in the invariant mass spectrum of selected eμ pairs, upper limits are set at 95 % confidence level on the product of cross section and branching fraction for signals arising in theories with charged lepton flavour violation. In the search for narrow resonances, the resonant production of a τ sneutrino in R-parity violating supersymmetry is considered. The τ sneutrino is excluded for masses below 1.28 TeV for couplings λ132=λ231=λ′311=0.01, and below 2.30 TeV for λ132=λ231=0.07 and λ′311=0.11. These are the most stringent limits to date from direct searches at high-energy colliders. In addition, the resonance searches are interpreted in terms of a model with heavy partners of the Z boson and the photon. In a framework of TeV-scale quantum gravity based on a renormalization of Newton’s constant, the search for non-resonant contributions to the e μ mass spectrum excludes QBH production below a threshold mass Mth of 1.99 TeV. In models that invoke extra dimensions, the bounds range from 2.36 TeV for one extra dimension to 3.63 TeV for six extra dimensions. This is the first search for QBHs decaying into the e μ final state.
en_US
dc.format
application/pdf
en_US
dc.language.iso
en
en_US
dc.publisher
Springer
en_US
dc.rights.uri
http://creativecommons.org/licenses/by/4.0/
dc.title
Search for lepton flavour violating decays of heavy resonances and quantum black holes to an eμ pair in proton–proton collisions at √s = 8 TeV
en_US
dc.type
Journal Article
dc.rights.license
Creative Commons Attribution 4.0 International
dc.date.published
2016-06-10
ethz.journal.title
The European Physical Journal C
ethz.journal.volume
76
en_US
ethz.journal.issue
6
en_US
ethz.journal.abbreviated
Eur. Phys. J. C
ethz.pages.start
317
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ethz.size
25 p.
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ethz.version.deposit
publishedVersion
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ethz.identifier.wos
ethz.identifier.nebis
001879220
ethz.publication.place
Heidelberg
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ethz.publication.status
published
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ETH Zürich::00002 - ETH Zürich, direkt::00012 - Lehre und Forschung, direkt::00007 - Departemente, direkt::02010 - Departement Physik / Department of Physics::02532 - Institut für Teilchenphysik (IPP) / Institute for Particle Physics (IPP)::03381 - Pauss, Felicitas (emeritus)
en_US
ethz.leitzahl
ETH Zürich::00002 - ETH Zürich::00012 - Lehre und Forschung::00007 - Departemente::02010 - Dep. Physik / Dep. of Physics::02532 - Institut für Teilchen- und Astrophysik / Inst. Particle Physics and Astrophysics::03593 - Dissertori, Günther / Dissertori, Günther
en_US
ethz.leitzahl
ETH Zürich::00002 - ETH Zürich::00012 - Lehre und Forschung::00007 - Departemente::02010 - Dep. Physik / Dep. of Physics::02532 - Institut für Teilchen- und Astrophysik / Inst. Particle Physics and Astrophysics::03904 - Wallny, Rainer / Wallny, Rainer
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ethz.leitzahl
ETH Zürich::00002 - ETH Zürich::00012 - Lehre und Forschung::00007 - Departemente::02010 - Dep. Physik / Dep. of Physics::02532 - Institut für Teilchen- und Astrophysik / Inst. Particle Physics and Astrophysics::08803 - Grab, Christoph (Tit.Prof.)
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ethz.leitzahl.certified
ETH Zürich::00002 - ETH Zürich, direkt::00012 - Lehre und Forschung, direkt::00007 - Departemente, direkt::02010 - Departement Physik / Department of Physics::02532 - Institut für Teilchenphysik (IPP) / Institute for Particle Physics (IPP)::03381 - Pauss, Felicitas (emeritus)
ethz.leitzahl.certified
ETH Zürich::00002 - ETH Zürich::00012 - Lehre und Forschung::00007 - Departemente::02010 - Dep. Physik / Dep. of Physics::02532 - Institut für Teilchen- und Astrophysik / Inst. Particle Physics and Astrophysics::03593 - Dissertori, Günther / Dissertori, Günther
ethz.leitzahl.certified
ETH Zürich::00002 - ETH Zürich::00012 - Lehre und Forschung::00007 - Departemente::02010 - Dep. Physik / Dep. of Physics::02532 - Institut für Teilchen- und Astrophysik / Inst. Particle Physics and Astrophysics::03904 - Wallny, Rainer / Wallny, Rainer
ethz.leitzahl.certified
ETH Zürich::00002 - ETH Zürich::00012 - Lehre und Forschung::00007 - Departemente::02010 - Dep. Physik / Dep. of Physics::02532 - Institut für Teilchen- und Astrophysik / Inst. Particle Physics and Astrophysics::08803 - Grab, Christoph (Tit.Prof.)
ethz.date.deposited
2017-06-12T10:16:52Z
ethz.source
ECIT
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imp593654998581493175
ethz.ecitpid
pub:181038
ethz.eth
yes
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ethz.availability
Open access
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ethz.rosetta.installDate
2017-07-12T11:58:50Z
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2022-03-28T19:57:31Z
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