Search for long-lived particles decaying to jet pairs


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Aaij R., Adeva B., Adinolfi M., Affolder A., Ajaltouni Z., Akar S., ...Daha Fazla

European Physical Journal C, cilt.75, sa.4, ss.1-12, 2015 (SCI-Expanded) identifier identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 75 Sayı: 4
  • Basım Tarihi: 2015
  • Doi Numarası: 10.1140/epjc/s10052-015-3344-6
  • Dergi Adı: European Physical Journal C
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.1-12
  • Manisa Celal Bayar Üniversitesi Adresli: Evet

Özet

A search is presented for long-lived particles with a mass between 25 and 50 GeV/c2 and a lifetime between 1 and 200 ps in a sample of proton–proton collisions at a centre-of-mass energy of s=7 TeV, corresponding to an integrated luminosity of 0.62 fb-1, collected by the LHCb detector. The particles are assumed to be pair-produced by the decay of a standard model-like Higgs boson. The experimental signature of the long-lived particle is a displaced vertex with two associated jets. No excess above the background is observed and limits are set on the production cross-section as a function of the long-lived particle mass and lifetime.