Publication
Measurement of diffraction dissociation cross sections in pp collisions at $\sqrt{s}$ = 7 TeV
| dc.contributor.author | CMS collaboration (2145 authors) | |
| dc.contributor.author | Hollar, Jonathan | |
| dc.contributor.author | Nayak, Aruna | |
| dc.contributor.author | Bargassa, Pedrame | |
| dc.contributor.author | Beirão Da Cruz E Silva, Cristóvão | |
| dc.contributor.author | Faccioli, Pietro | |
| dc.contributor.author | Ferreira Parracho, Pedro Guilherme | |
| dc.contributor.author | Gallinaro, Michele | |
| dc.contributor.author | Lloret Iglesias, Lara | |
| dc.contributor.author | Nguyen, Federico | |
| dc.contributor.author | Rodrigues Antunes, Joao | |
| dc.contributor.author | Seixas, Joao | |
| dc.contributor.author | Varela, Joao | |
| dc.contributor.author | Vischia, Pietro | |
| dc.contributor.author | David Tinoco Mendes, Andre | |
| dc.contributor.author | Musella, Pasquale | |
| dc.contributor.author | Silva, Pedro | |
| dc.contributor.author | Pela, Joao | |
| dc.contributor.author | Leonardo, Nuno | |
| dc.date.accessioned | 2019-02-04T06:29:57Z | |
| dc.date.available | 2019-02-04T06:29:57Z | |
| dc.date.issued | 2015-07-06 | |
| dc.date.updated | 2019-02-04T06:29:56Z | |
| dc.description.abstract | Measurements of diffractive dissociation cross sections in pp collisions at s=7 TeV 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. | |
| dc.description.version | Peer Reviewed | |
| dc.identifier | Phys.Rev. D92 (2015) 012003; DOI 10.1103/PhysRevD.92.012003 | |
| dc.identifier.uri | http://dx.doi.org/10.1103/PhysRevD.92.012003 | |
| dc.identifier.uri | http://hdl.handle.net/10400.26/26814 | |
| dc.language.iso | eng | |
| dc.title | Measurement of diffraction dissociation cross sections in pp collisions at $\sqrt{s}$ = 7 TeV | |
| dc.type | journal article | |
| dspace.entity.type | Publication | |
| rcaap.rights | openAccess | pt |
| rcaap.type | article |