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Journal articles
Search for new physics with long-lived particles decaying to photons and missing energy in pp collisions at sqrt(s) = 7 TeV
S. Chatrchyan
M. Besancon
1
S. Choudhury
1
M. Dejardin
1
D. Denegri
1
B. Fabbro
1
J.L. Faure
1
F. Ferri
1
S. Ganjour
1
A. Givernaud
1
P. Gras
1
G. Hamel de Monchenault
1
P. Jarry
1
E. Locci
1
J. Malcles
1
L. Millischer
1
A. Nayak
1
J. Rander
1
A. Rosowsky
1
I. Shreyber
1
M. Titov
1
S. Baffioni
2
F. Beaudette
2
L. Benhabib
2
L. Bianchini
2
M. Bluj
2
C. Broutin
2
Pierre Busson
2
C. Charlot
2
N. Daci
2
T. Dahms
2
L. Dobrzynski
2
R. Granier de Cassagnac
2
M. Haguenauer
2
P. Mine
2
C. Mironov
2
I.N. Naranjo
2
M. Nguyen
2
C. Ochando
2
P. Paganini
2
D. Sabes
2
R. Salerno
2
Y. Sirois
2
C. Veelken
2
A. Zabi
2
J.-L. Agram
3
J. Andrea
3
D. Bloch
3
D. Bodin
3
J.-M. Brom
3
M. Cardaci
3
E.C. Chabert
3
C. Collard
3
E. Conte
3
F. Drouhin
3
C. Ferro
3
J.-C. Fontaine
3
D. Gele
3
U. Goerlach
3
P. Juillot
3
A.-C. Le Bihan
3
P. van Hove
3
F. Fassi
4
D. Mercier
4
S. Beauceron
5
N. Beaupere
5
O. Bondu
5
G. Boudoul
5
J. Chasserat
5
R. Chierici
5
D. Contardo
5
P. Depasse
5
H. El Mamouni
5
J. Fay
5
S. Gascon
5
M. Gouzevitch
5
B. Ille
5
T. Kurca
5
M. Lethuillier
5
L. Mirabito
5
S. Perries
5
V. Sordini
5
Y. Tschudi
5
P. Verdier
5
S. Viret
5
M. Titov 1
Author
S. Baffioni 2
Author IdHAL : stephanie-barrillon ORCID : https://orcid.org/0000-0002-7075-1673
F. Beaudette 2
Author
L. Benhabib 2
Author
L. Bianchini 2
Author
M. Bluj 2
Author
C. Broutin 2
Author
Pierre Busson 2
Author IdHAL : pierre-busson-cnrsgr ORCID : https://orcid.org/0000-0003-1027-3400
R. Granier de Cassagnac 2
Author IdHAL : raphgrandecass arXiv : https://arxiv.org/a/rgdc ORCID : https://orcid.org/0000-0002-1275-7292
M. Haguenauer 2
Author
P. Mine 2
Author
C. Mironov 2
Author
I.N. Naranjo 2
Author
M. Nguyen 2
Author
C. Ochando 2
Author
P. Paganini 2
Author IdHAL : pascal-paganini ORCID : https://orcid.org/0000-0001-9580-683X
A.-C. Le Bihan 3
Author
P. van Hove 3
Author IdHAL : pierre-van-hove arXiv : https://arxiv.org/a/1408.1472 ORCID : https://orcid.org/0000-0002-2431-3381
F. Fassi 4
Author
D. Mercier 4
Author
J. Chasserat 5
Author
R. Chierici 5
Author
D. Contardo 5
Author IdHAL : dcontardo
P. Depasse 5
Author
H. El Mamouni 5
Author
J. Fay 5
Author
S. Gascon 5
Author
M. Gouzevitch 5
Author IdHAL : maxime-gouzevitch arXiv : https://arxiv.org/a/Gouzevitch ORCID : https://orcid.org/0000-0002-5524-880X
B. Ille 5
Author
T. Kurca 5
Author
M. Lethuillier 5
Author IdHAL : morgan-lethuillier ORCID : https://orcid.org/0000-0001-6185-2045
L. Mirabito 5
Author
S. Perries 5
Author
V. Sordini 5
Author IdHAL : viola-sordini ORCID : https://orcid.org/0000-0003-0885-824X
Y. Tschudi 5
Author
P. Verdier 5
Author
S. Viret 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
DRS-IPHC - Département Recherches Subatomiques (23 rue du Loess - BP28 67037 Strasbourg cedex 2 - France)
- 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)
- IN2P3 - Institut National de Physique Nucléaire et de Physique des Particules du CNRS (France)
- CNRS - Centre National de la Recherche Scientifique : UAR6402 / USR6402 (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 performed for long-lived neutral particles decaying into a photon and invisible particles. An example of such a signature is the decay of the lightest neutralino with nonzero lifetime into a gravitino and a photon in gauge-mediated supersymmetry, with the neutralino as the next-to-lightest supersymmetric particle and the gravitino as the lightest. The search uses events containing photons, missing transverse energy, and jets. The impact parameter of the photon relative to the beam-beam collision point can be reconstructed using converted photons. The method is sensitive to lifetimes of the order of 0.1 to 1 ns. The data sample corresponds to an integrated luminosity of 2.23 inverse femtobarns in pp collisions at sqrt(s) = 7 TeV, recorded in the first part of 2011 by the CMS experiment at the LHC. Cross-section limits are presented on pair production for such particles, each of which decays into a photon and invisible particles. The observed 95% confidence level limits vary between 0.11 and 0.21 pb, depending on the neutral particle lifetime.
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Journal articles
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http://hal.in2p3.fr/in2p3-00714321
Contributor : Sylvie Flores <>
Submitted on : Wednesday, July 4, 2012 - 8:00:39 AM
Last modification on : Thursday, June 17, 2021 - 3:18:33 PM
Contributor : Sylvie Flores <>
Submitted on : Wednesday, July 4, 2012 - 8:00:39 AM
Last modification on : Thursday, June 17, 2021 - 3:18:33 PM
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- HAL Id : in2p3-00714321, version 1
- ARXIV : 1207.0627
- DOI : 10.1007/JHEP11(2012)172
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Citation
S. Chatrchyan, M. Besancon, S. Choudhury, M. Dejardin, D. Denegri, et al.. Search for new physics with long-lived particles decaying to photons and missing energy in pp collisions at sqrt(s) = 7 TeV. Journal of High Energy Physics, Springer, 2012, 11, pp.172. ⟨10.1007/JHEP11(2012)172⟩. ⟨in2p3-00714321⟩
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