期刊
EUROPEAN PHYSICAL JOURNAL C
卷 72, 期 3, 页码 -出版社
SPRINGER
DOI: 10.1140/epjc/s10052-012-1926-0
关键词
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资金
- ANPCyT, Argentina
- YerPhI, Armenia
- ARC, Australia
- BMWF, Austria
- ANAS, Azerbaijan
- SSTC, Belarus
- CNPq
- FAPESP, Brazil
- NSERC
- NRC
- CFI, Canada
- CERN
- CONICYT, Chile
- CAS
- MOST
- NSFC, China
- COLCIEN-CIAS, Colombia
- MSMT CR
- MPO CR
- VSC CR, Czech Republic
- DNRF
- DNSRC
- Lundbeck Foundation, Denmark
- ARTEMIS
- ERC
- European Union
- IN2P3-CNRS
- CEA-DSM/IRFU, France
- GNAS, Georgia
- BMBF
- DFG
- HGF
- MPG
- AvH Foundation, Germany
- GSRT, Greece
- ISF
- MINERVA
- GIF
- DIP
- Benoziyo Center, Israel
- INFN, Italy
- MEXT
- JSPS, Japan
- CNRST, Morocco
- FOM
- NWO, Netherlands
- RCN, Norway
- MNiSW, Poland
- GRICES
- FCT, Portugal
- MERYS (MECTS), Romania
- MES of Russia
- ROSATOM
- Russian Federation
- JINR
- MSTD, Serbia
- MSSR, Slovakia
- ARRS
- MVZT, Slovenia
- DST/NRF, South Africa
- MICINN, Spain
- SRC
- Wallenberg Foundation, Sweden
- SER
- SNSF
- Cantons of Bern
- Geneva, Switzerland
- NSC, Taiwan
- TAEK, Turkey
- STFC
- Royal Society
- Leverhulme Trust, United Kingdom
- DOE
- NSF, United States of America
- Science and Technology Facilities Council [PP/E000347/1, ST/K001361/1 LHCb Upgrades, ST/H001093/1, ST/K001361/1, ST/K001337/1, ST/K001264/1 ATLAS, ST/I005803/1 GRIDPP, ST/K001248/1, ST/K001361/1 ATLAS, ST/I003525/1, ST/K001329/1 ATLAS, ST/I003142/1, ST/I005803/1, ST/H001026/2, ST/K001361/1 MINOS/MINOS+, ST/H001069/2, ST/H001026/1, ST/M001512/1, ST/M001431/1, PP/E003699/1, ST/G502320/1, ST/H001093/2, ST/J004944/1, ATLAS, ST/J004928/1 ATLAS Upgrade, ST/K001361/1 LHCb, ST/J002798/1, ST/K001248/1 ATLAS, ST/K001361/1 ATLAS Upgrades, ST/F007337/1, ST/J005576/1, ST/I000186/1, ST/K001337/1 ATLAS, ST/I006080/1, ST/J004928/1, PP/E003087/1, ST/I003517/1, ST/L001144/1, PP/E003699/2, GRIDPP, ST/K00073X/1] Funding Source: researchfish
- STFC [ST/L001144/1, ST/J004928/1, ST/G502320/1, ST/I006080/1, ST/H001093/1, ST/H001026/1, ST/I003142/1, ST/M000753/1, ST/F007337/1, ST/J004944/1, PP/E003699/2, ST/J005576/1, ST/H001069/2, ST/K001361/1, ST/I003525/1, ST/I005803/1, PP/E003087/1, ST/I000186/1, ST/J002798/1, ST/K001329/1, ST/M001431/1, ST/H001093/2, ST/K001248/1, ST/K00073X/1, ST/M001512/1, PP/E003699/1, ST/H001026/2, ST/K001337/1, PP/E000347/1, ST/I003517/1] Funding Source: UKRI
- ICREA Funding Source: Custom
- Division Of Physics
- Direct For Mathematical & Physical Scien [1119200] Funding Source: National Science Foundation
Pseudorapidity gap distributions in proton-proton collisions at root s = 7 TeV are studied using a minimum bias data sample with an integrated luminosity of 7.1 mu b(-1). Cross sections are measured differentially in terms of Delta eta(F), the larger of the pseudorapidity regions extending to the limits of the ATLAS sensitivity, at eta = +/- 4.9, in which no final state particles are produced above a transverse momentum threshold p(T)(cut). The measurements span the region 0 < Delta eta(F) < 8 for 200 MeV < p(T)(cut) < 800 MeV. At small Delta eta(F), the data test the reliability of hadronisation models in describing rapidity and transverse momentum fluctuations in final state particle production. The measurements at larger gap sizes are dominated by contributions from the single diffractive dissociation process (pp -> Xp), enhanced by double dissociation (pp -> XY) where the invariant mass of the lighter of the two dissociation systems satisfies M-Y less than or similar to 7 GeV. The resulting cross section is ds sigma/d Delta eta(F) approximate to 1 mb for Delta eta(F) greater than or similar to 3. The large rapidity gap data are used to constrain the value of the Pomeron intercept appropriate to triple Regge models of soft diffraction. The cross section integrated over all gap sizes is compared with other LHC inelastic cross section measurements.
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