Yayınlanmış 1 Ocak 2015 | Sürüm v1
Dergi makalesi Açık

Search for disappearing tracks in proton-proton collisions at root s=8 TeV

Oluşturanlar

  • 1. Yerevan Phys Inst, Yerevan 375036, Armenia
  • 2. Inst Hochenergiephys OeAW, Vienna, Austria

Açıklama

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 root s = 8 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.

Dosyalar

bib-529d4516-8fe7-40f3-9296-a53412e145ff.txt

Dosyalar (391 Bytes)

Ad Boyut Hepisini indir
md5:d99d5c9e21917520aa889242fb3505cd
391 Bytes Ön İzleme İndir