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http://bura.brunel.ac.uk/handle/2438/11264
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. |
URI: | http://bura.brunel.ac.uk/handle/2438/11264 |
DOI: | http://dx.doi.org/10.1103/PhysRevD.92.012003 |
ISSN: | 1550-7998 1550-2368 |
Appears in Collections: | Dept of Electronic and Electrical Engineering Research Papers |
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