Search for stopped long-lived particles produced in pp collisions at root s=7 TeV
Identifikátory výsledku
Kód výsledku v IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F12%3A10129038" target="_blank" >RIV/00216208:11320/12:10129038 - isvavai.cz</a>
Výsledek na webu
<a href="http://dx.doi.org/10.1007/JHEP08(2012)026" target="_blank" >http://dx.doi.org/10.1007/JHEP08(2012)026</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1007/JHEP08(2012)026" target="_blank" >10.1007/JHEP08(2012)026</a>
Alternativní jazyky
Jazyk výsledku
angličtina
Název v původním jazyce
Search for stopped long-lived particles produced in pp collisions at root s=7 TeV
Popis výsledku v původním jazyce
A search has been performed for long-lived particles that have stopped in the CMS detector, during 7TeV proton-proton operations of the CERN LHC. The existence of such particles could be inferred from observation of their decays when there were no proton-proton collisions in the CMS detector, namely during gaps between LHC beam crossings. Using a data set in which CMS recorded an integrated luminosity of 4.0 fb(-1), and a search interval corresponding to 246 hours of trigger live time, 12 events are observed, with a mean background prediction of 8.6 +/- 2.4 events. Limits are presented at 95% confidence level on long-lived gluino and stop production, over 13 orders of magnitude of particle lifetime. Assuming the "cloud model" of R-hadron interactions,a gluino with mass below 640 GeV and a stop with mass below 340 GeV are excluded, for lifetimes between 10 mu s and 1000s.
Název v anglickém jazyce
Search for stopped long-lived particles produced in pp collisions at root s=7 TeV
Popis výsledku anglicky
A search has been performed for long-lived particles that have stopped in the CMS detector, during 7TeV proton-proton operations of the CERN LHC. The existence of such particles could be inferred from observation of their decays when there were no proton-proton collisions in the CMS detector, namely during gaps between LHC beam crossings. Using a data set in which CMS recorded an integrated luminosity of 4.0 fb(-1), and a search interval corresponding to 246 hours of trigger live time, 12 events are observed, with a mean background prediction of 8.6 +/- 2.4 events. Limits are presented at 95% confidence level on long-lived gluino and stop production, over 13 orders of magnitude of particle lifetime. Assuming the "cloud model" of R-hadron interactions,a gluino with mass below 640 GeV and a stop with mass below 340 GeV are excluded, for lifetimes between 10 mu s and 1000s.
Klasifikace
Druh
J<sub>x</sub> - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)
CEP obor
BF - Elementární částice a fyzika vysokých energií
OECD FORD obor
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Návaznosti výsledku
Projekt
<a href="/cs/project/LA08015" target="_blank" >LA08015: Spolupráce ČR s CERN</a><br>
Návaznosti
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Ostatní
Rok uplatnění
2012
Kód důvěrnosti údajů
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Údaje specifické pro druh výsledku
Název periodika
Journal of High Energy Physics
ISSN
1126-6708
e-ISSN
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Svazek periodika
2012
Číslo periodika v rámci svazku
8
Stát vydavatele periodika
IT - Italská republika
Počet stran výsledku
31
Strana od-do
1-31
Kód UT WoS článku
000309883600059
EID výsledku v databázi Scopus
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