Search for scalar diphoton resonances with 15.4~fb$^{-1}$ of data collected at $\sqrt{s}$=13 TeV in 2015 and 2016 with the ATLAS detector - INSPIRE

DataBETA

Search for scalar diphoton resonances with 15.4~fb $^{-1}$ of data collected at $\sqrt{s}$ =13 TeV in 2015 and 2016 with the ATLAS detector

ATLAS

Collaboration

Aug 8, 2016

22 pages

Published: 2016

Report number:

ATLAS-CONF-2016-059,
ATLAS-CONF-2016-059

Experiments:

CERN-LHC-ATLAS,
CERN-LHC-ATLAS

View in:

CERN Document Server

reference search148 citations

Citations per year

Abstract: (CDS)

A search for new spin-0 resonances decaying into two photons in the ATLAS experiment at the LHC is described. The analysis is based on

pp

collision data corresponding to an integrated luminosity of 15.4 fb

^{-1}

at

\sqrt{s}

=13~\TeV\ recorded in 2015 and 2016. A deviation from the Standard Model background-only hypothesis corresponding to 3.4 standard deviations is observed in the 2015 data for a resonance mass hypothesis of 730~GeV. No significant excess at such mass over the background expectation is observed in the 2016 data. The global significance is estimated to be less than one standard deviation. Limits on the production cross section times branching ratio to two photons of such resonances are reported.

Note:

Preliminary results •
All figures including auxiliary figures are available at https://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/CONFNOTES/ATLAS-CONF-2016-059 •
Preliminary results

p p: scattering
p p: colliding beams
resonance: mass
resonance: scalar
resonance: radiative decay
photon: pair production
two-photon
ATLAS
cross section: branching ratio: upper limit
CERN LHC Coll

References(39)

Figures(0)

[1]

Search for resonances in diphoton events at $\sqrt{s}$ =13 TeV with the ATLAS detector

ATLAS

Collaboration

•

Morad Aaboud
(
- Oujda U.
)

et al.

- JHEP 09 (2016) 001
•
e-Print:
- 1606.03833
•
DOI:
- 10.1007/JHEP09(2016)001

[2]

Search for Resonant Production of High-Mass Photon Pairs in Proton-Proton Collisions at $\sqrt s$ =8 and 13 TeV

CMS

Collaboration

•

Vardan Khachatryan
(
- Yerevan Phys. Inst.
)

et al.

- Phys.Rev.Lett. 117 (2016) 5, 051802
•
e-Print:
- 1606.04093
•
DOI:
- 10.1103/PhysRevLett.117.051802

[3]

MODERN KALUZA-KLEIN THEORIES

T. Appelquist
(
- Yale U.
)
(ed.)
,
A. Chodos
(
- Yale U.
)
(ed.)
,
P.G.O. Freund
(
- Chicago U., EFI
)
(ed.)

- READING, USA: ADDISON-WESLEY (1987) 619 P. (FRONTIERS IN PHYSICS, 65)

[4]

A Large mass hierarchy from a small extra dimension

Lisa Randall
(
- Princeton U. and
- MIT
)
,
Raman Sundrum
(
- Boston U.
)

- Phys.Rev.Lett. 83 (1999) 3370-3373
•
e-Print:
- hep-ph/9905221
•
DOI:
- 10.1103/PhysRevLett.83.3370

[5]

STRONGLY INTERACTING SINGLET - DOUBLET HIGGS MODEL

A. Hill
(
- Michigan U.
)
,
J.J. van der Bij
(
- Fermilab
)

- Phys.Rev.D 36 (1987) 3463-3473
•
DOI:
- 10.1103/PhysRevD.36.3463

[6]

RADIATIVE CORRECTIONS TO W W SCATTERING

M.J.G. Veltman
(
- Michigan U.
)
,
F.J. Yndurain
(
- Madrid, Autonoma U.
)

- Nucl.Phys.B 325 (1989) 1-17
•
DOI:
- 10.1016/0550-3213(89)90369-6

[7]

Influence of strongly coupled, hidden scalars on Higgs signals

T. Binoth
(
- Freiburg U.
)
,
J.J. van der Bij
(
- Freiburg U.
)

- Z.Phys.C 75 (1997) 17-25
•
e-Print:
- hep-ph/9608245
•
DOI:
- 10.1007/s002880050442

[8]

A Minimal spontaneously broken hidden sector and its impact on Higgs boson physics at the large hadron collider

- Phys.Rev.D 72 (2005) 093007
•
e-Print:
- hep-ph/0509209
•
DOI:
- 10.1103/PhysRevD.72.093007

[9]

Higgs-field portal into hidden sectors

Brian Patt
(
- MIT, LNS
)
,
Frank Wilczek
(
- MIT, LNS
)

e-Print:
- hep-ph/0605188

[10]

Higgs singlet extension parameter space in the light of the LHC discovery

Giovanni Marco Pruna
(
- PSI, Villigen and
- Dresden, Tech. U.
)
,
Tania Robens
(
- Dresden, Tech. U.
)

- Phys.Rev.D 88 (2013) 11, 115012
•
e-Print:
- 1303.1150
•
DOI:
- 10.1103/PhysRevD.88.115012

[11]

A Theory of Spontaneous T Violation

T.D. Lee
(
- Columbia U.
)

- Phys.Rev.D 8 (1973) 1226-1239,
- In *Lee, T.D.: Selected papers, vol. 2*, 516-529
•
DOI:
- 10.1103/PhysRevD.8.1226

[12]

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

[13]

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

[14]

The ATLAS Simulation Infrastructure

ATLAS

Collaboration

•

G. Aad
(
- Freiburg U.
)

et al.

- Eur.Phys.J.C 70 (2010) 823-874
•
e-Print:
- 1005.4568
•
DOI:
- 10.1140/epjc/s10052-010-1429-9

[15]

GEANT4 - A Simulation Toolkit

GEANT4

Collaboration

•

S. Agostinelli
(
- Genoa U.
)

et al.

- Nucl.Instrum.Meth.A 506 (2003) 250-303
•
DOI:
- 10.1016/S0168-9002(03)01368-8

[16]

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

[17]

Measurement of the $Z/\gamma^*$ boson transverse momentum distribution in $pp$ collisions at $\sqrt{s}$ = 7 TeV with the ATLAS detector

ATLAS

Collaboration

•

Georges Aad
(
- Marseille, CPPM
)

et al.

- JHEP 09 (2014) 145
•
e-Print:
- 1406.3660
•
DOI:
- 10.1007/JHEP09(2014)145

[18]

The automated computation of tree-level and next-to-leading order differential cross sections, and their matching to parton shower simulations

J. Alwall
(
- Taiwan, Natl. Taiwan U.
)
,
R. Frederix
(
- CERN
)
,
S. Frixione
(
- CERN
)
,
V. Hirschi
(
- SLAC
)
,
F. Maltoni
(
- Louvain U., CP3
)

et al.

- JHEP 07 (2014) 079
•
e-Print:
- 1405.0301
•
DOI:
- 10.1007/JHEP07(2014)079

[19]

A framework for Higgs characterisation

P. Artoisenet
(
- NIKHEF, Amsterdam
)
,
P. de Aquino
(
)
,
F. Demartin
(
- Louvain U., CP3
)
,
R. Frederix
(
- CERN
)
,
S. Frixione
(
- CERN and
- ITPP, Lausanne
)

et al.

- JHEP 11 (2013) 043
•
e-Print:
- 1306.6464
•
DOI:
- 10.1007/JHEP11(2013)043

[20]

Parton distributions for the LHC Run II

NNPDF

Collaboration

•

Richard D. Ball
(
- U. Edinburgh, Higgs Ctr. Theor. Phys. and
- CERN
)

et al.

- JHEP 04 (2015) 040
•
e-Print:
- 1410.8849
•
DOI:
- 10.1007/JHEP04(2015)040

[21]

ATLAS Pythia 8 tunes to 7 TeV data

[22]

Event generation with SHERPA 1.1

et al.

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

[23]

A Parton shower algorithm based on Catani-Seymour dipole factorisation

Steffen Schumann
(
- Dresden, Tech. U.
)
,
Frank Krauss
(
- Durham U., IPPP
)

- JHEP 03 (2008) 038
•
e-Print:
- 0709.1027
•
DOI:
- 10.1088/1126-6708/2008/03/038

[24]

QCD matrix elements and truncated showers

- JHEP 05 (2009) 053
•
e-Print:
- 0903.1219
•
DOI:
- 10.1088/1126-6708/2009/05/053

[25]

New parton distributions for collider physics

Hung-Liang Lai
(
- Michigan State U. and
- Taipei Municipal U. of Education
)
,
Marco Guzzi
(
- Southern Methodist U.
)
,
Joey Huston
(
- Michigan State U.
)
,
Zhao Li
(
- Michigan State U.
)
,
Pavel M. Nadolsky
(
- Southern Methodist U.
)

et al.

- Phys.Rev.D 82 (2010) 074024
•
e-Print:
- 1007.2241
•
DOI:
- 10.1103/PhysRevD.82.074024

1-25 of 39
1
2
25 / page