Journal articles
Search for exotic decays of a Higgs boson into undetectable particles and photons
V. Khachatryan
M. Besançon
1
F. Couderc
1
M. Dejardin
1
D. Denegri
1
B. Fabbro
1
J.L. Faure
1
C. Favaro
1
F. Ferri
1
S. Ganjour
1
A. Givernaud
1
P. Gras
1
G. Hamel De Monchenault
1
P. Jarry
1
E. Locci
1
M. Machet
1
J. Malcles
1
J. Rander
1
A. Rosowsky
1
M. Titov
1
A. Zghiche
1
I. Antropov
2
S. Baffioni
2
F. Beaudette
2
P. Busson
2
L. Cadamuro
2
E. Chapon
2
C. Charlot
2
T. Dahms
2
O. Davignon
2
N. Filipovic
2
A. Florent
2
R. Granier De Cassagnac
2
S. Lisniak
2
L. Mastrolorenzo
2
P. Mine
2
I.N. Naranjo
2
M. Nguyen
2
C. Ochando
2
G. Ortona
2
P. Paganini
2
S. Regnard
2
R. Salerno
2
J.B. Sauvan
2
Y. Sirois
2
T. Strebler
2
Y. Yilmaz
2
A. Zabi
2
J.-L. Agram
3
J. Andrea
3
A. Aubin
3
D. Bloch
3
J.-M. Brom
3
M. Buttignol
3
E.C. Chabert
3
N. Chanon
3
C. Collard
3
E. Conte
3
X. Coubez
3
J.-C. Fontaine
3
D. Gele
3
U. Goerlach
3
C. Goetzmann
3
A.-C. Le Bihan
3
J.A. Merlin
3
K. Skovpen
3
P. Van Hove
3
S. Gadrat
4
S. Beauceron
5
C. Bernet
5
G. Boudoul
5
E. Bouvier
5
C.A. Carrillo Montoya
5
J. Chasserat
5
R. Chierici
5
D. Contardo
5
B. Courbon
5
P. Depasse
5
H. El Mamouni
5
J. Fan
5
J. Fay
5
S. Gascon
5
M. Gouzevitch
5
B. Ille
5
F. Lagarde
I.B. Laktineh
5
M. Lethuillier
5
L. Mirabito
5
A.L. Pequegnot
5
S. Perries
5
J.D. Ruiz Alvarez
5
D. Sabes
5
L. Sgandurra
5
V. Sordini
5
M. Vander Donckt
5
P. Verdier
5
S. Viret
5
H. Xiao
5
A. Zghiche 1
Author
I. Antropov 2
Author
S. Baffioni 2
Author IdHAL : stephanie-barrillon ORCID : https://orcid.org/0000-0002-7075-1673
F. Beaudette 2
Author
R. Granier De Cassagnac 2
Author IdHAL : raphgrandecass arXiv : https://arxiv.org/a/rgdc ORCID : https://orcid.org/0000-0002-1275-7292
S. Lisniak 2
Author
L. Mastrolorenzo 2
Author
P. Mine 2
Author
P. Paganini 2
Author IdHAL : pascal-paganini ORCID : https://orcid.org/0000-0001-9580-683X
S. Regnard 2
Author
R. Salerno 2
Author
J.B. Sauvan 2
Author
L. Sgandurra 5
Author
V. Sordini 5
Author IdHAL : viola-sordini ORCID : https://orcid.org/0000-0003-0885-824X
M. Vander Donckt 5
Author
P. Verdier 5
Author
1
IRFU - Institut de Recherches sur les lois Fondamentales de l'Univers (CEA Saclay
F-91191 Gif sur Yvette cedex - France)
- CEA - Commissariat à l'énergie atomique et aux énergies alternatives : DRF/IRFU (Centre de Saclay Centre de Grenoble Centre de Cadarache etc - France)
- Université Paris-Saclay (Espace Technologique, Bat. Discovery - RD 128 - 2e ét., 91190 Saint-Aubin - France)
2
LLR - Laboratoire Leprince-Ringuet (Route de Saclay - 91128 Palaiseau Cedex - France)
- IN2P3 - Institut National de Physique Nucléaire et de Physique des Particules du CNRS (France)
- X - École polytechnique (École polytechnique, 91128 Palaiseau Cedex - France)
- CNRS - Centre National de la Recherche Scientifique : UMR7638 (France)
3
IPHC - Institut Pluridisciplinaire Hubert Curien (23 rue Loess - BP 28 67037 Strasbourg Cedex - France)
- UNISTRA - Université de Strasbourg (4 rue Blaise Pascal - CS 90032 - 67081 Strasbourg cedex - France)
- IN2P3 - Institut National de Physique Nucléaire et de Physique des Particules du CNRS (France)
- CNRS - Centre National de la Recherche Scientifique : UMR7178 (France)
4
CC-IN2P3 - Centre de Calcul de l'IN2P3 (Domaine scientifique de La Doua
43 bd du 11 Novembre 1918
69622 Villeurbanne Cedex - France)
5
IPNL - Institut de Physique Nucléaire de Lyon (Campus LyonTech-la Doua
Bâtiment Paul DIRAC
4 Rue Enrico Fermi
69622 Villeurbanne Cedex - France)
- UCBL - Université Claude Bernard Lyon 1 (43, boulevard du 11 novembre 1918, 69622 Villeurbanne cedex - France)
- Université de Lyon (92 rue Pasteur - CS 30122, 69361 Lyon Cedex 07 - France)
- IN2P3 - Institut National de Physique Nucléaire et de Physique des Particules du CNRS (France)
- CNRS - Centre National de la Recherche Scientifique : UMR5822 (France)
Abstract : A search is presented for exotic decays of a Higgs boson into undetectable particles and one or two isolated photons in pp collisions at a center-of-mass energy of 8 TeV. The data correspond to an integrated luminosity of up to 19.4 inverse femtobarns collected with the CMS detector at the LHC. Higgs bosons produced in gluon-gluon fusion and in association with a Z boson are investigated, using models in which the Higgs boson decays into a gravitino and a neutralino or a pair of neutralinos, followed by the decay of the neutralino to a gravitino and a photon. The selected events are consistent with the background-only hypothesis, and limits are placed on the product of cross sections and branching fractions. Assuming a standard model Higgs boson production cross-section, a 95% confidence level upper limit is set on the branching fraction of a 125 GeV Higgs boson decaying into undetectable particles and one or two isolated photons as a function of the neutralino mass. For neutralino masses from 1 to 120 GeV an upper limit in the range of 7 to 13% is obtained. Further results are given as a function of the neutralino lifetime, and also for a range of Higgs boson masses.
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Journal articles
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http://hal.in2p3.fr/in2p3-01171155
Contributor : Sylvie Flores <>
Submitted on : Friday, July 3, 2015 - 8:17:50 AM
Last modification on : Friday, November 20, 2020 - 5:38:01 PM
Contributor : Sylvie Flores <>
Submitted on : Friday, July 3, 2015 - 8:17:50 AM
Last modification on : Friday, November 20, 2020 - 5:38:01 PM
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- HAL Id : in2p3-01171155, version 1
- ARXIV : 1507.00359
- DOI : 10.1016/j.physletb.2015.12.017
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V. Khachatryan, M. Besançon, F. Couderc, M. Dejardin, D. Denegri, et al.. Search for exotic decays of a Higgs boson into undetectable particles and photons. Physics Letters B, Elsevier, 2016, 753, pp.363-388. ⟨10.1016/j.physletb.2015.12.017⟩. ⟨in2p3-01171155⟩
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