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dc.contributor.author
CMS Collaboration
dc.contributor.author
Sirunyan, Albert M.
dc.contributor.author
Backhaus, Malte
dc.contributor.author
Bäni, Lukas
dc.contributor.author
Berger, Pirmin
dc.contributor.author
Chernyavskaya, Nadezda
dc.contributor.author
Dissertori, Günther
dc.contributor.author
Dittmar, Michael
dc.contributor.author
Donegà, Mauro
dc.contributor.author
Dorfer, Christian
dc.contributor.author
Grab, Christophorus
dc.contributor.author
Heidegger, Constantin
dc.contributor.author
Hits, Dmitry
dc.contributor.author
Hoss, Jan
dc.contributor.author
Klijnsma, Thomas
dc.contributor.author
Lustermann, Werner
dc.contributor.author
Manzoni, Riccardo A.
dc.contributor.author
Marionneau, Matthieu
dc.contributor.author
Meinhard, Maren T.
dc.contributor.author
Micheli, Francesco
dc.contributor.author
Musella, Pasquale
dc.contributor.author
Nessi-Tedaldi, Francesca
dc.contributor.author
Pata, Joosep
dc.contributor.author
Pauss, Felicitas
dc.contributor.author
Perrin, Gaël
dc.contributor.author
Perrozzi, Luca
dc.contributor.author
Pigazzini, Simone
dc.contributor.author
Quittnat, Milena
dc.contributor.author
Ruini, Daniele
dc.contributor.author
Sanz Becerra, Diego A.
dc.contributor.author
Schönenberger, Myriam
dc.contributor.author
Shchutska, Lesya
dc.contributor.author
Tavolaro, Vittorio R.
dc.contributor.author
Theofilatos, Konstantinos
dc.contributor.author
Vesterbacka Olsson, Minna L.
dc.contributor.author
Wallny, Rainer
dc.contributor.author
Zhu, De H.
dc.contributor.author
et al.
dc.date.accessioned
2019-01-17T17:27:59Z
dc.date.available
2018-11-09T05:54:27Z
dc.date.available
2018-11-27T12:53:27Z
dc.date.available
2019-01-17T17:27:59Z
dc.date.issued
2018-10-05
dc.identifier.other
10.1103/PhysRevLett.121.141801
en_US
dc.identifier.uri
http://hdl.handle.net/20.500.11850/302495
dc.identifier.doi
10.3929/ethz-b-000302495
dc.description.abstract
This Letter presents the observation of the rare Z boson decay Z→ψℓ+ℓ−. Here, ψ represents contributions from direct J/ψ and ψ(2S)→J/ψX, ℓ+ℓ− is a pair of electrons or muons, and the J/ψ meson is detected via its decay to μ+μ−. The sample of proton-proton collision data, collected by the CMS experiment at the LHC at a center-of-mass energy of 13 TeV, corresponds to an integrated luminosity of 35.9  fb−1. The signal is observed with a significance in excess of 5 standard deviations. After subtraction of the ψ(2S)→J/ψX contribution, the ratio of the branching fraction of the exclusive decay Z→J/ψℓ+ℓ− to the decay Z→μ+μ−μ+μ− within a fiducial phase space is measured to be B(Z→J/ψℓ+ℓ−)/B(Z→μ+μ−μ+μ−)=0.67±0.18(stat)±0.05(syst).
en_US
dc.format
application/pdf
en_US
dc.language.iso
en
en_US
dc.publisher
American Physical Society
en_US
dc.rights.uri
http://creativecommons.org/licenses/by/4.0/
dc.title
Observation of the Z→𝜓ℓ+ℓ− Decay in pp Collisions at √s =13 TeV
en_US
dc.type
Journal Article
dc.rights.license
Creative Commons Attribution 4.0 International
dc.date.published
2018-10-04
ethz.journal.title
Physical Review Letters
ethz.journal.volume
121
en_US
ethz.journal.issue
14
en_US
ethz.pages.start
141801
en_US
ethz.size
17 p.
en_US
ethz.version.deposit
publishedVersion
en_US
ethz.identifier.wos
ethz.identifier.scopus
ethz.publication.place
New York, NY
en_US
ethz.publication.status
published
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
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::08803 - Grab, Christoph (Tit.Prof.)
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::09631 - Shchutska, Lesya (ehemalig) / Shchutska, Lesya (former)
en_US
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.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::09631 - Shchutska, Lesya (ehemalig) / Shchutska, Lesya (former)
ethz.date.deposited
2018-11-09T05:54:28Z
ethz.source
SCOPUS
ethz.eth
yes
en_US
ethz.availability
Open access
en_US
ethz.rosetta.installDate
2018-11-27T12:53:31Z
ethz.rosetta.lastUpdated
2018-11-27T12:53:31Z
ethz.rosetta.exportRequired
true
ethz.rosetta.versionExported
true
ethz.COinS
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