Search for Higgs boson decays to a photon and a Z boson in pp collisions at $\sqrt{s}$=7 and 8 TeV with the ATLAS detector - INSPIRE

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Search for Higgs boson decays to a photon and a Z boson in pp collisions at $\sqrt{s}$ =7 and 8 TeV with the ATLAS detector

ATLAS

Collaboration

Feb 13, 2014

20 pages

Published in:

Phys.Lett.B 732 (2014) 8-27

Published: May 1, 2014

e-Print:

1402.3051 [hep-ex]

DOI:

10.1016/j.physletb.2014.03.015

PDG:

{{\mathit Z}}{{\mathit \gamma}}

Report number:

CERN-PH-EP-2014-006

Experiments:

CERN-LHC-ATLAS

View in:

reference search156 citations

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Abstract: (Elsevier)

A search is reported for a neutral Higgs boson in the decay channel H→Zγ , Z→ℓ+ℓ− ( ℓ=e,μ ), using 4.5 fb −1 of pp collisions at s=7 TeV and 20.3 fb −1 of pp collisions at s=8 TeV , recorded by the ATLAS detector at the CERN Large Hadron Collider. The observed distribution of the invariant mass of the three final-state particles, mℓℓγ , is consistent with the Standard Model hypothesis in the investigated mass range of 120–150 GeV. For a Higgs boson with a mass of 125.5 GeV, the observed upper limit at the 95% confidence level is 11 times the Standard Model expectation. Upper limits are set on the cross section times branching ratio of a neutral Higgs boson with mass in the range 120–150 GeV between 0.13 and 0.5 pb for s=8 TeV at 95% confidence level.

Note:

9 pages plus author list (20 pages total), 3 figures, 2 tables, submitted to Physics Letters B. All figures including auxiliary figures are available at http://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/HIGG-2013-05/

p p: scattering
Higgs particle: radiative decay
ATLAS
channel cross section: branching ratio: upper limit
CERN LHC Coll
photon
Z0: leptonic decay
mass spectrum: (dilepton photon)
mass dependence
experimental results

References(63)

Figures(4)

[1]

Observation of a new particle in the search for the Standard Model Higgs boson with the ATLAS detector at the LHC

ATLAS

Collaboration

•

Georges Aad
(
- Freiburg U.
)

et al.

- Phys.Lett.B 716 (2012) 1-29
•
e-Print:
- 1207.7214
•
DOI:
- 10.1016/j.physletb.2012.08.020

[2]

Observation of a New Boson at a Mass of 125 GeV with the CMS Experiment at the LHC

CMS

Collaboration

•

Serguei Chatrchyan
(
- Yerevan Phys. Inst.
)

et al.

- Phys.Lett.B 716 (2012) 30-61
•
e-Print:
- 1207.7235
•
DOI:
- 10.1016/j.physletb.2012.08.021

[3]

Measurements of Higgs boson production and couplings in diboson final states with the ATLAS detector at the LHC

ATLAS

Collaboration

•

Georges Aad
(
- Freiburg U.
)

et al.

- Phys.Lett.B 726 (2013) 88-119,
- Phys.Lett.B 734 (2014) 406-406 (erratum)
•
e-Print:
- 1307.1427
•
DOI:
- 10.1016/j.physletb.2014.05.011

[4]

Observation of a New Boson with Mass Near 125 GeV in $pp$ Collisions at $\sqrt{s}$ = 7 and 8 TeV

CMS

Collaboration

•

Serguei Chatrchyan
(
- Yerevan Phys. Inst.
)

et al.

- JHEP 06 (2013) 081
•
e-Print:
- 1303.4571
•
DOI:
- 10.1007/JHEP06(2013)081

[5]

Evidence for the spin-0 nature of the Higgs boson using ATLAS data

ATLAS

Collaboration

•

Georges Aad
(
- Freiburg U.
)

et al.

- Phys.Lett.B 726 (2013) 120-144
•
e-Print:
- 1307.1432
•
DOI:
- 10.1016/j.physletb.2013.08.026

[6]

Study of the Mass and Spin-Parity of the Higgs Boson Candidate Via Its Decays to Z Boson Pairs

CMS

Collaboration

•

Serguei Chatrchyan
(
- Yerevan Phys. Inst.
)

et al.

- Phys.Rev.Lett. 110 (2013) 8, 081803
•
e-Print:
- 1212.6639
•
DOI:
- 10.1103/PhysRevLett.110.081803

[7]

Search for a Higgs Boson Decaying into a Z and a Photon in $pp$ Collisions at $\sqrt{s}$ = 7 and 8 TeV

CMS

Collaboration

•

Serguei Chatrchyan
(
- Yerevan Phys. Inst.
)

et al.

- Phys.Lett.B 726 (2013) 587-609
•
e-Print:
- 1307.5515
•
DOI:
- 10.1016/j.physletb.2013.09.057

[8]

Handbook of LHC Higgs Cross Sections: 1. Inclusive Observables

et al.

e-Print:
- 1101.0593
•
DOI:
- 10.5170/CERN-2011-002

[9]

Handbook of LHC Higgs Cross Sections: 2. Differential Distributions

S. Dittmaier
(
- Freiburg U.
)
,
C. Mariotti
(
- INFN, Turin and
- CERN
)
,
G. Passarino
(
- INFN, Turin and
- Turin U.
)
,
R. Tanaka
(
- Orsay, LAL
)
,
S. Alekhin
(
- DESY, Zeuthen and
- Dubna U., Protvino Branch
)

et al.

e-Print:
- 1201.3084
•
DOI:
- 10.5170/CERN-2012-002

[10]

Handbook of LHC Higgs Cross Sections: 3. Higgs Properties

S Heinemeyer
(
- Cantabria Inst. of Phys.
)
(ed.)
,
C Mariotti
(
- INFN, Turin
)
(ed.)
,
G Passarino
(
- Turin U. and
- INFN, Turin
)
(ed.)
,
R Tanaka
(
- Orsay, LAL
)
(ed.)
,
J R Andersen
(
- Durham U., IPPP
)

et al.

e-Print:
- 1307.1347
•
DOI:
- 10.5170/CERN-2013-004

[11]

Singlet scalars as Higgs imposters at the Large Hadron Collider

Ian Low
(
- Argonne and
- Northwestern U.
)
,
Joseph Lykken
(
- Fermilab
)
,
Gabe Shaughnessy
(
- Argonne and
- Northwestern U.
)

- Phys.Rev.D 84 (2011) 035027
•
e-Print:
- 1105.4587
•
DOI:
- 10.1103/PhysRevD.84.035027

[12]

Have We Observed the Higgs (Imposter)?

Ian Low
(
- Argonne and
- Northwestern U.
)
,
Joseph Lykken
(
- Fermilab
)
,
Gabe Shaughnessy
(
- Wisconsin U., Madison
)

- Phys.Rev.D 86 (2012) 093012
•
e-Print:
- 1207.1093
•
DOI:
- 10.1103/PhysRevD.86.093012

[13]

New Prospects for Higgs Compositeness in $h \to Z\gamma$

Aleksandr Azatov
(
- INFN, Rome and
- Rome U.
)
,
Roberto Contino
(
- INFN, Rome and
- Rome U.
)
,
Andrea Di Iura
(
- INFN, Rome and
- Rome U.
)
,
Jamison Galloway
(
- INFN, Rome and
- Rome U.
)

- Phys.Rev.D 88 (2013) 7, 075019
•
e-Print:
- 1308.2676
•
DOI:
- 10.1103/PhysRevD.88.075019

[14]

Higgs boson decays to γγ and Zγ in models with Higgs extensions

Cheng-Wei Chiang
(
- Taiwan, Natl. Central U. and
- Taiwan, Inst. Phys. and
- NCTS, Hsinchu
)
,
Kei Yagyu
(
- Taiwan, Natl. Central U.
)

- Phys.Rev.D 87 (2013) 3, 033003
•
e-Print:
- 1207.1065
•
DOI:
- 10.1103/PhysRevD.87.033003

[15]

New Scalar Contributions to $h\to Z\gamma$

Chian-Shu Chen
(
- NCTS, Hsinchu
)
,
Chao-Qiang Geng
(
- Taiwan, Natl. Tsing Hua U. and
- NCTS, Hsinchu
)
,
Da Huang
(
- Taiwan, Natl. Tsing Hua U.
)
,
Lu-Hsing Tsai
(
- Taiwan, Natl. Tsing Hua U.
)

- Phys.Rev.D 87 (2013) 075019
•
e-Print:
- 1301.4694
•
DOI:
- 10.1103/PhysRevD.87.075019

[16]

Implications of a Modified Higgs to Diphoton Decay Width

Marcela Carena
(
- Fermilab and
- Chicago U., EFI and
- Chicago U., KICP
)
,
Ian Low
(
- Argonne and
- Northwestern U.
)
,
Carlos E.M. Wagner
(
- Chicago U., EFI and
- Chicago U., KICP and
- Argonne
)

- JHEP 08 (2012) 060
•
e-Print:
- 1206.1082
•
DOI:
- 10.1007/JHEP08(2012)060

[17]

The ATLAS Experiment at the CERN Large Hadron Collider

ATLAS

Collaboration

•

G. Aad
(
- Marseille, CPPM
)

et al.

- JINST 3 (2008) S08003
•
DOI:
- 10.1088/1748-0221/3/08/S08003

[18]

Performance of the ATLAS Trigger System in 2010

ATLAS

Collaboration

•

Georges Aad
(
- Freiburg U.
)

et al.

- Eur.Phys.J.C 72 (2012) 1849
•
e-Print:
- 1110.1530
•
DOI:
- 10.1140/epjc/s10052-011-1849-1

[19]

Improved luminosity determination in pp collisions at sqrt(s) = 7 TeV using the ATLAS detector at the LHC

ATLAS

Collaboration

•

Georges Aad
(
- Freiburg U.
)

et al.

- Eur.Phys.J.C 73 (2013) 8, 2518
•
e-Print:
- 1302.4393
•
DOI:
- 10.1140/epjc/s10052-013-2518-3

[20]

NLO Higgs boson production via gluon fusion matched with shower in POWHEG

Simone Alioli
(
- Milan Bicocca U. and
- INFN, Milan Bicocca
)
,
Paolo Nason
(
- INFN, Milan Bicocca
)
,
Carlo Oleari
(
- Milan Bicocca U. and
- INFN, Milan Bicocca
)
,
Emanuele Re
(
- Milan Bicocca U. and
- INFN, Milan Bicocca
)

- JHEP 04 (2009) 002
•
e-Print:
- 0812.0578
•
DOI:
- 10.1088/1126-6708/2009/04/002

[21]

NLO Higgs boson production via vector-boson fusion matched with shower in POWHEG

Paolo Nason
(
- INFN, Milan Bicocca
)
,
Carlo Oleari
(
- Milan Bicocca U. and
- INFN, Milan Bicocca
)

- JHEP 02 (2010) 037
•
e-Print:
- 0911.5299
•
DOI:
- 10.1007/JHEP02(2010)037

[22]

Higgs production via gluon fusion in the POWHEG approach in the SM and in the MSSM

E. Bagnaschi
(
- Milan U. and
- INFN, Milan and
- Paris, LPTHE
)
,
G. Degrassi
(
- INFN, Rome3 and
- Rome III U.
)
,
P. Slavich
(
- Paris, LPTHE
)
,
A. Vicini
(
- Milan U. and
- INFN, Milan
)

- JHEP 02 (2012) 088
•
e-Print:
- 1111.2854
•
DOI:
- 10.1007/JHEP02(2012)088

[23]

A Brief Introduction to PYTHIA 8.1

Torbjorn Sjostrand
(
- CERN and
- Lund U.
)
,
Stephen Mrenna
(
- Fermilab
)
,
Peter Z. Skands
(
- CERN and
- Fermilab
)

- Comput.Phys.Commun. 178 (2008) 852-867
•
e-Print:
- 0710.3820
•
DOI:
- 10.1016/j.cpc.2008.01.036

[24]

Event generation with SHERPA 1.1

et al.

- JHEP 02 (2009) 007
•
e-Print:
- 0811.4622
•
DOI:
- 10.1088/1126-6708/2009/02/007

[25]

Hard photon production and matrix-element parton-shower merging

Stefan Hoeche
(
- Zurich U.
)
,
Steffen Schumann
(
- Heidelberg U.
)
,
Frank Siegert
(
- Durham U., IPPP and
- University Coll. London
)

- Phys.Rev.D 81 (2010) 034026
•
e-Print:
- 0912.3501
•
DOI:
- 10.1103/PhysRevD.81.034026

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