Journal
JOURNAL OF HIGH ENERGY PHYSICS
Volume -, Issue 9, Pages -Publisher
SPRINGER
DOI: 10.1007/JHEP09(2015)084
Keywords
Diffraction; Hadron-Hadron Scattering; Forward physics; Particle and resonance production; Heavy quark production
Categories
Funding
- CERN
- CAPES (Brazil)
- CNPq (Brazil)
- FAPERJ (Brazil)
- FINEP (Brazil)
- NSFC (China)
- CNRS/IN2P3 (France)
- BMBF (Germany)
- DFG (Germany)
- HGF (Germany)
- MPG (Germany)
- INFN (Italy)
- FOM (The Netherlands)
- NWO (The Netherlands)
- MNiSW (Poland)
- NCN (Poland)
- MEN/IFA (Romania)
- MinES (Russia)
- FANO (Russia)
- MinECo (Spain)
- SNSF (Switzerland)
- SER (Switzerland)
- NASU (Ukraine)
- STFC (United Kingdom)
- NSF (U.S.A.)
- IN2P3 (France)
- KIT (Germany)
- SURF (The Netherlands)
- PIC (Spain)
- GridPP (United Kingdom)
- EPLANET (European Union)
- Marie Sklodowska-Curie Actions (European Union)
- ERC (European Union)
- Conseil general de Haute-Savoie
- Labex ENIGMASS
- OCEVU, Region Auvergne (France)
- RFBR (Russia)
- XuntaGal (Spain)
- GENCAT (Spain)
- Royal Society
- Royal Commission for the Exhibition of 1851 (United Kingdom)
- Division Of Physics
- Direct For Mathematical & Physical Scien [1505719, 1205805] Funding Source: National Science Foundation
- STFC [ST/L00352X/1, ST/K003534/1, ST/K001302/1, PP/E003095/1, ST/J005495/1, ST/J50094X/1, ST/K00140X/1, ST/L003538/1, ST/M001407/1, PP/E000355/1, ST/J004855/1, ST/K003410/1, ST/K004646/1, ST/K00137X/1, ST/K001604/1, ST/H00100X/2, ST/H00100X/1, ST/K000705/1, ST/M000729/1, ST/M003027/1, ST/H006737/1, ST/M004791/1, ST/L001195/1, ST/I003576/1, ST/J004332/1, ST/N000447/1, LHCb, ST/L003163/1, LHCb Upgrades, ST/L003112/1, ST/N000277/1, ST/M004058/1, ST/I000097/1, ST/M000761/1, ST/L006146/1, ST/L003392/1] Funding Source: UKRI
- Science and Technology Facilities Council [ST/H00100X/1, ST/I003576/1, ST/M004791/1, ST/K001310/1 LHCb, ST/K00140X/1, ST/J50094X/1, ST/K001604/1, ST/J005495/1, ST/K001418/1, 1064565, ST/K00137X/1, ST/M004058/1, ST/K001310/1 ATLAS, 1416165, 1234430, ST/N000250/1, PP/E003095/1, ST/K004646/1, LHCb, 1208164, ST/K003534/1 GRIDPP, PP/E000355/1, 1564711, ST/M004791/1 GRIDPP, ST/L003538/1, ST/M001474/1, 1096173, ST/L003163/1, ST/M000729/1, ST/N000447/1, 1511824, LHCb Upgrades, ST/M001407/1, ST/L001195/1, ST/M000761/1, ST/K001256/1, 1299204, 1415632, ST/K001302/1, 1225314, ST/L00352X/1, ST/L003112/1, ST/J004855/1, ST/K003410/1, 1364044, 1369397, ST/I000097/1, ST/H00100X/2, 1225304, ST/K003534/1, ST/K001310/1, ST/J004332/1, GRIDPP, ST/L003392/1, ST/M003027/1, ST/K001310/1 ATLAS Upgrades, ST/K001310/1 LHCb Upgrades, ST/H006737/1, ST/L003163/1 LHCb Upgrades, ST/L006146/1, ST/K000705/1] Funding Source: researchfish
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A study is presented of central exclusive production of gamma(n S) states, where the gamma (n S) resonances decay to the mu(+) mu(-) final state, using p p collision data recorded by the LHCb experiment. The cross-section is measured in the rapidity range 2 < y (gamma) < 4.5 where the muons are reconstructed in the pseudorapidity range 2 < eta (mu(+/-)) < 4.5. The data sample corresponds to an integrated luminosity of 2.9 fb(-1) and was collected at centreof- mass energies of 7TeV and 8TeV. The measured gamma(1 S) and gamma(2 S) production crosssections are sigma(pp -> p gamma(1S)p) = 9.0 +/- 1.7 pb and sigma(pp -> p gamma(2S)p) = 1.3 +/- 0.3 pb, where the first uncertainties are statistical and the second are systematic. The gamma (1S) cross-section is also measured as a function of rapidity and is found to be in good agreement with Standard Model predictions. An upper limit is set at 3.4 pb at the 95% confidence level for the exclusive gamma(3 S) production cross-section, including possible contamination from chi b (3P) -> gamma (3S)gamma decays.
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