Observation of a diffractive contribution to dijet production in proton-proton collisions at sqrt(s) = 7 TeV (CROSBI ID 201176)
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Podaci o odgovornosti
Chatrchyan, S. ; ... ; Godinović, Nikola ; Lelas, Damir ; Pleština, Roko ; Polić, Dunja ; Puljak, Ivica ; Antunović, Željko ; Kovač, Marko ; Brigljević, Vuko ; Đurić, Senka ; Kadija, Krešo ; Luetić, Jelena ; Morović, Srećko ; ... ; Mekterović, Darko ; ... ; Swanson, J.
CMS Collaboration
engleski
Observation of a diffractive contribution to dijet production in proton-proton collisions at sqrt(s) = 7 TeV
The cross section for dijet production in pp collisions at sqrt(s) = 7 TeV is presented as a function of xi, a variable that approximates the fractional momentum loss of the scattered proton in single-diffractive events. The analysis is based on an integrated luminosity of 2.7 inverse nanobarns collected with the CMS detector at the LHC at low instantaneous luminosities, and uses events with jet transverse momentum of at least 20 GeV. The dijet cross section results are compared to the predictions of diffractive and nondiffractive models. The low-xi data show a significant contribution from diffractive dijet production, observed for the first time at the LHC. The associated rapidity gap survival probability is estimated.
LHC ; CMS ; diffractive production ; dijet
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Podaci o izdanju
87
2013.
012006
20
objavljeno
1550-7998
1550-2368
10.1103/PhysRevD.87.012006