Search for a Higgs boson decaying into a Z and a photon in pp collisions at âˆšs=7 and 8TeV

Serguei Chatrchyan; Felix Bachmair; Lukas Bäni; Lorenzo Bianchini; Pierluigi Bortignon; Marco-Andrea Buchmann; Bruno Casal; Nicolas Chanon; Amanda Deisher; Günther Dissertori; Michael Dittmar; Mauro Donegà; Marc Dünser; Philipp Eller; Klaus Freudenreich; Christoph Grab; Dmitry Hits; Pierre Lecomte; Werner Lustermann; Boris Mangano; Andrea C Marini; Pablo Martinez Ruiz Del Arbol; Daniel Meister; Niklas Mohr; Filip Moortgat; Christoph Nägeli; Pascal Nef; Francesca Nessi-Tedaldi; Francesco Pandolfi; Luc Pape; Felicitas Pauss; Marco Peruzzi; Frédéric J Ronga; Marco Rossini; Leonardo Sala; Ann-Karin Sanchez; Andrey Starodumov; Benjamin Stieger; Maiko Takahashi; Alessandro Thea; Ludwig Tauscher; Konstantinos Theofilatos; Daniel Treille; Christina Urscheler; Rainer Wallny; Hannsjörg A Weber; CMS Collaboration

doi:10.1016/j.physletb.2013.09.057

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Search for a Higgs boson decaying into a Z and a photon in pp collisions at âˆšs=7 and 8TeV

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Search for a Higgs boson decaying into a Z and a photon in pp collisions at âˆšs=7 and 8TeV

Serguei Chatrchyan, Felix Bachmair, Lukas Bäni, Lorenzo Bianchini, Pierluigi Bortignon, Marco-Andrea Buchmann, Bruno Casal, Nicolas Chanon, Amanda Deisher, Günther Dissertori, …

Physics letters. B, Vol.726(5-Apr), pp.587-609

11/01/2013

DOI: 10.1016/j.physletb.2013.09.057

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Abstract

A search for a Higgs boson decaying into a Z boson and a photon is described. The analysis is performed using proton-proton collision datasets recorded by the CMS detector at the LHC. Events were collected at center-of-mass energies of 7 TeV and 8 TeV, corresponding to integrated luminosities of 5.0fb-1 and 19.6fb-1, respectively. The selected events are required to have opposite-sign electron or muon pairs. No excess above standard model predictions has been found in the 120-160 GeV mass range and the first limits on the Higgs boson production cross section times the H→Zγ branching fraction at the LHC have been derived. The observed at 95% confidence level limits are between about 4 and 25 times the standard model cross section times the branching fraction. For a standard model Higgs boson mass of 125 GeV the expected limit at the 95% confidence level is 10 and the observed limit is 9.5. Models predicting the Higgs boson production cross section times the H→Zγ branching fraction to be larger than one order of magnitude of the standard model prediction are excluded for most of the 125-157 GeV mass range.

High Energy Physics

Physics

Experiment

Higgs

Phenomenology

Details

Title: Subtitle: Search for a Higgs boson decaying into a Z and a photon in pp collisions at âˆšs=7 and 8TeV
Creators: Serguei Chatrchyan
Felix Bachmair
Lukas Bäni
Lorenzo Bianchini
Pierluigi Bortignon
Marco-Andrea Buchmann
Bruno Casal
Nicolas Chanon
Amanda Deisher
Günther Dissertori
Michael Dittmar
Mauro Donegà
Marc Dünser
Philipp Eller
Klaus Freudenreich
Christoph Grab
Dmitry Hits
Pierre Lecomte
Werner Lustermann
Boris Mangano
Andrea C Marini
Pablo Martinez Ruiz Del Arbol
Daniel Meister
Niklas Mohr
Filip Moortgat
Christoph Nägeli
Pascal Nef
Francesca Nessi-Tedaldi
Francesco Pandolfi
Luc Pape
Felicitas Pauss
Marco Peruzzi
Frédéric J Ronga
Marco Rossini
Leonardo Sala
Ann-Karin Sanchez
Andrey Starodumov
Benjamin Stieger
Maiko Takahashi
Alessandro Thea
Ludwig Tauscher
Konstantinos Theofilatos
Daniel Treille
Christina Urscheler
Rainer Wallny
Hannsjörg A Weber - RWTH Aachen University
CMS Collaboration
Contributors: C. R Newsom (Contributor) - University of Iowa, Physics and Astronomy
Y Onel (Contributor) - University of Iowa, Physics and Astronomy
Resource Type: Journal article
Publication Details: Physics letters. B, Vol.726(5-Apr), pp.587-609
DOI: 10.1016/j.physletb.2013.09.057
ISSN: 0370-2693
eISSN: 1873-2445
Publisher: Elsevier
Language: English
Date published: 11/01/2013
Academic Unit: Physics and Astronomy
Record Identifier: 9984199945202771

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