Search for disappearing tracks in proton-proton collisions at TeV.

The CMS collaboration

Research output: Contribution to journalArticle

42 Citations (Scopus)

Abstract

Abstract: A search is presented for long-lived charged particles that decay within the CMS detector and produce the signature of a disappearing track. Disappearing tracks are identified as those with little or no associated calorimeter energy deposits and with missing hits in the outer layers of the tracker. The search uses proton-proton collision data recorded at TeV that corresponds to an integrated luminosity of 19.5 fb−1. The results of the search are interpreted in the context of the anomaly-mediated supersymmetry breaking (AMSB) model. The number of observed events is in agreement with the background expectation, and limits are set on the cross section of direct electroweak chargino production in terms of the chargino mass and mean proper lifetime. At 95% confidence level, AMSB models with a chargino mass less than 260 GeV, corresponding to a mean proper lifetime of 0.2 ns, are excluded.[Figure not available: see fulltext.]

Original languageEnglish (US)
JournalJournal of High Energy Physics
Volume2015
Issue number1
DOIs
StatePublished - Jan 1 2015

Fingerprint

supersymmetry
anomalies
life (durability)
particle decay
collisions
protons
calorimeters
confidence
charged particles
deposits
luminosity
signatures
detectors
cross sections
energy

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics

Keywords

  • Exotics
  • Hadron-Hadron Scattering
  • Supersymmetry

Cite this

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title = "Search for disappearing tracks in proton-proton collisions at TeV.",
abstract = "Abstract: A search is presented for long-lived charged particles that decay within the CMS detector and produce the signature of a disappearing track. Disappearing tracks are identified as those with little or no associated calorimeter energy deposits and with missing hits in the outer layers of the tracker. The search uses proton-proton collision data recorded at TeV that corresponds to an integrated luminosity of 19.5 fb−1. The results of the search are interpreted in the context of the anomaly-mediated supersymmetry breaking (AMSB) model. The number of observed events is in agreement with the background expectation, and limits are set on the cross section of direct electroweak chargino production in terms of the chargino mass and mean proper lifetime. At 95{\%} confidence level, AMSB models with a chargino mass less than 260 GeV, corresponding to a mean proper lifetime of 0.2 ns, are excluded.[Figure not available: see fulltext.]",
keywords = "Exotics, Hadron-Hadron Scattering, Supersymmetry",
author = "{The CMS collaboration} and Marlow, {Daniel Robert} and Olsen, {James D.} and Tully, {Christopher George} and John Chou and Yuri Gershtein and Eva Halkiadakis and Amitabh Lath and Sevil Salur and Stephen Schnetzer and Sunil Somalwar and Scott Thomas",
year = "2015",
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doi = "https://doi.org/10.1007/JHEP01(2015)096",
language = "English (US)",
volume = "2015",
journal = "Journal of High Energy Physics",
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Search for disappearing tracks in proton-proton collisions at TeV. / The CMS collaboration.

In: Journal of High Energy Physics, Vol. 2015, No. 1, 01.01.2015.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Search for disappearing tracks in proton-proton collisions at TeV.

AU - The CMS collaboration

AU - Marlow, Daniel Robert

AU - Olsen, James D.

AU - Tully, Christopher George

AU - Chou, John

AU - Gershtein, Yuri

AU - Halkiadakis, Eva

AU - Lath, Amitabh

AU - Salur, Sevil

AU - Schnetzer, Stephen

AU - Somalwar, Sunil

AU - Thomas, Scott

PY - 2015/1/1

Y1 - 2015/1/1

N2 - Abstract: A search is presented for long-lived charged particles that decay within the CMS detector and produce the signature of a disappearing track. Disappearing tracks are identified as those with little or no associated calorimeter energy deposits and with missing hits in the outer layers of the tracker. The search uses proton-proton collision data recorded at TeV that corresponds to an integrated luminosity of 19.5 fb−1. The results of the search are interpreted in the context of the anomaly-mediated supersymmetry breaking (AMSB) model. The number of observed events is in agreement with the background expectation, and limits are set on the cross section of direct electroweak chargino production in terms of the chargino mass and mean proper lifetime. At 95% confidence level, AMSB models with a chargino mass less than 260 GeV, corresponding to a mean proper lifetime of 0.2 ns, are excluded.[Figure not available: see fulltext.]

AB - Abstract: A search is presented for long-lived charged particles that decay within the CMS detector and produce the signature of a disappearing track. Disappearing tracks are identified as those with little or no associated calorimeter energy deposits and with missing hits in the outer layers of the tracker. The search uses proton-proton collision data recorded at TeV that corresponds to an integrated luminosity of 19.5 fb−1. The results of the search are interpreted in the context of the anomaly-mediated supersymmetry breaking (AMSB) model. The number of observed events is in agreement with the background expectation, and limits are set on the cross section of direct electroweak chargino production in terms of the chargino mass and mean proper lifetime. At 95% confidence level, AMSB models with a chargino mass less than 260 GeV, corresponding to a mean proper lifetime of 0.2 ns, are excluded.[Figure not available: see fulltext.]

KW - Exotics

KW - Hadron-Hadron Scattering

KW - Supersymmetry

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