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“School of Particles”

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Paper   IPM / Particles / 11564
School of Particles and Accelerator
  Title:   Search for Dijet Resonances in 7 TeV pp Collisions at CMS
  Author(s): 
1 . Hessamaddin Arfaei
2 . Hamed Bakhshiansohi
3 . Seyed Mohsen Etesami
4 . Ali Fahim
5 . Majid Hashemi
6 . Abideh Jafari
7 . Mohsen Khakzad
8 . A Mohammadi
9 . Mojtaba Mohammadi Najafabadi
10 . Saeid Paktinat Mehdiabadi
11 . Batool Safarzadeh
12 . Maryam Zeinali
  Status:   Published
  Journal: Phys. Rev. Lett.
  Vol.:  105
  Year:  2010
  Pages:   211801
  Supported by:  IPM
  Abstract:
A search for narrow resonances in the dijet mass spectrum is performed using data corresponding to an integrated luminosity of 2.9 inverse pb collected by the CMS experiment at the LHC. Upper limits at the 95 percent confidence level (CL) are presented on the product of the resonance cross section, branching fraction into dijets, and acceptance, separately for decays into quark-quark, quark-gluon, or gluon-gluon pairs. The data exclude new particles predicted in the following models at the 95 percent CL: string resonances, with mass less than 2.50 TeV, excited quarks, with mass less than 1.58 TeV, and axigluons, colorons, and E_6 diquarks, in specific mass intervals. This extends previously published limits on these models.

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