Search for long-lived particles in events with photons and missing energy in proton-proton collisions at root s=7 TeV

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F13%3A10139367" target="_blank" >RIV/00216208:11320/13:10139367 - isvavai.cz</a>

Result on the web

<a href="http://dx.doi.org/10.1016/j.physletb.2013.04.027" target="_blank" >http://dx.doi.org/10.1016/j.physletb.2013.04.027</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.physletb.2013.04.027" target="_blank" >10.1016/j.physletb.2013.04.027</a>

Result language

angličtina

Original language name

Search for long-lived particles in events with photons and missing energy in proton-proton collisions at root s=7 TeV

Original language description

Results are presented from a search for long-lived neutralinos decaying into a photon and an invisible particle, a signature associated with gauge-mediated supersymmetry breaking in supersymmetric models. The analysis is based on a 4.9 fb(-1) sample of proton-proton collisions at root s = 7 TeV, collected with the CMS detector at the LHC. The missing transverse energy and the time of arrival of the photon at the electromagnetic calorimeter are used to search for an excess of events over the expected background. No significant excess is observed, and lower limits at the 95% confidence level are obtained on the mass of the lightest neutralino, m > 220 GeV (for c tau < 500 mm), as well as on the proper decay length of the lightest neutralino, c tau > 6000mm (for m < 150 GeV).

Czech name

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Czech description

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Type

J_x - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

CEP classification

BF - Elementary particle theory and high energy physics

OECD FORD branch

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Project

<a href="/en/project/LA08015" target="_blank" >LA08015: Collaboration of the Czech Republic with CERN</a><br>

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2013

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

ISSN

0370-2693

e-ISSN

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Volume of the periodical

722

Issue of the periodical within the volume

4-5

Country of publishing house

NL - THE KINGDOM OF THE NETHERLANDS

Number of pages

22

Pages from-to

273-294

UT code for WoS article

000319638000005

EID of the result in the Scopus database

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