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Title: Measurement of diffractive dissociation cross sections in pp collisions at s =7TeV
Authors: Khachatryan, V
Sirunyan, AM
Tumasyan, A
Adam, W
Bergauer, T
Dragicevic, M
Erö, J
Fabjan, C
Friedl, M
Frühwirth, R
Ghete, VM
Costantini, S
Crucy, S
Dildick, S
Fagot, A
Garcia, G
Reid, ID
McCartin, J
Ocampo Rios, AA
Ryckbosch, D
Salva Diblen, S
Leslie, D
Sigamani, M
Strobbe, N
Thyssen, F
Kyberd, P
Tytgat, M
Yazgan, E
Khan, A
Zaganidis, N
Hobson, PR
Cole, JE
Hartl, C
Hörmann, N
Hrubec, J
Jeitler, M
Kiesenhofer, W
Knünz, V
Krammer, M
Krätschmer, I
Liko, D
Mikulec, I
Rabady, D
Rahbaran, B
Rohringer, H
Schöfbeck, R
Strauss, J
Taurok, A
Treberer-Treberspurg, W
Waltenberger, W
Wulz, CE
Mossolov, V
Shumeiko, N
Suarez Gonzalez, J
Alderweireldt, S
Bansal, M
Bansal, S
Cornelis, T
De Wolf, EA
Janssen, X
Knutsson, A
Luyckx, S
Ochesanu, S
Rougny, R
Van De Klundert, M
Van Haevermaet, H
Van Mechelen, P
Van Remortel, N
Van Spilbeeck, A
Blekman, F
Blyweert, S
D'Hondt, J
Daci, N
Heracleous, N
Keaveney, J
Lowette, S
Maes, M
Olbrechts, A
Python, Q
Strom, D
Tavernier, S
Van Doninck, W
Van Mulders, P
Van Onsem, GP
Villella, I
Caillol, C
Clerbaux, B
De Lentdecker, G
Dobur, D
Favart, L
Gay, APR
Grebenyuk, A
Léonard, A
Mohammadi, A
Perniè, L
Reis, T
Seva, T
Thomas, L
Vander Velde, C
Vanlaer, P
Wang, J
Zenoni, F
Adler, V
Beernaert, K
Benucci, L
Cimmino, A
Teodorescu, L
Issue Date: 2015
Citation: Physical Review D - Particles, Fields, Gravitation and Cosmology, 2015, 92 (1)
Abstract: © 2015 CERN, for the CMS Collaboration. Measurements of diffractive dissociation cross sections in pp collisions at s=7TeV are presented in kinematic regions defined by the masses MX and MY of the two final-state hadronic systems separated by the largest rapidity gap in the event. Differential cross sections are measured as a function of ξX=MX2/s in the region -5.5<log10ξX<-2.5, for log10MY<0.5, dominated by single dissociation (SD), and 0.5<log10MY<1.1, dominated by double dissociation (DD), where MX and MY are given in GeV. The inclusive pp cross section is also measured as a function of the width of the central pseudorapidity gap Δη for Δη>3, log10MX>1.1, and log10MY>1.1, a region dominated by DD. The cross sections integrated over these regions are found to be, respectively, 2.99±0.02(stat)-0.29+0.32(syst)mb, 1.18±0.02(stat)±0.13(syst)mb, and 0.58±0.01(stat)-0.11+0.13(syst)mb, and are used to extract extrapolated total SD and DD cross sections. In addition, the inclusive differential cross section, dσ/dΔηF, for events with a pseudorapidity gap adjacent to the edge of the detector, is measured over ΔηF=8.4 units of pseudorapidity. The results are compared to those of other experiments and to theoretical predictions and found compatible with slowly rising diffractive cross sections as a function of center-of-mass energy.
ISSN: 1550-7998
Appears in Collections:Dept of Electronic and Electrical Engineering Research Papers

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