CMS-PAS-FSQ-12-005 | ||
Measurement of diffraction dissociation cross sections at sqrt(s)=7 TeV at the LHC | ||
CMS Collaboration | ||
2013 | ||
Abstract: Results are presented for the single- and double-diffractive cross sections in pp collisions at √s=7 TeV at the LHC using the CMS detector. The differential SD cross section is measured as a function of ξ, the forward momentum loss of the incoming proton, for −5.5<log10ξ<−2.5. The differential DD cross section is measured using events for which one hadronic system is detected in the central detector ( \lesssim M_X \lesssim 394GeV)andtheotheroneintheCASTORcalorimeter(.2≲MY≲12 GeV), as a function of ξX=M2X/s for −5.5<log10ξX<−2.5. The DD cross section is also measured differentially as a function of the width of the central pseudorapidity gap, Δη, for Δη>3 and MX,MY>10 GeV. In addition, the inclusive differential cross section for events with a forward rapidity gap (dσ/dΔηF) is measured over ΔηF = 8.4 units of pseudorapidity. Measurements are compared to results from other experiments and to theoretical predictions. | ||
Links:
CDS record (PDF) ;
inSPIRE record ;
Public twiki page ;
CADI line (restricted) ; Figures are available from the CDS record. These preliminary results are superseded in this paper, PRD 92 (2015) 012003. |
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Compact Muon Solenoid LHC, CERN |
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