Inclusive photon production at forward rapidities in proton-proton collisions at root s=0.9, 2.76 and 7 TeV
2015
ALICE Collaboration (ukupan broj autora: 963)
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The multiplicity and pseudorapidity distributions of inclusive photons have been measured at forward rapidities (2.3 LT eta LT 3.9) in proton-proton collisions at three center-of-mass energies, root s = 0.9, 2.76 and 7 TeV using the ALICE detector. It is observed that the increase in the average photon multiplicity as a function of beam energy is compatible with both a logarithmic and a power-law dependence. The relative increase in average photon multiplicity produced in inelastic pp collisions at 2.76 and 7 TeV center-of-mass energies with respect to 0.9 TeV are 37.2 +/- 0.3% (stat) +/- 8.8% (sys) and 61.2 +/- 0.3% (stat) +/- 7.6% (sys), respectively. The photon multiplicity distributions for all center-of-mass energies are well described by negative binomial distributions. The multiplicity distributions are also presented in terms of KNO variables. The results are compared to model predictions, which are found in general to underestimate the data at large photon multiplicities, in p...articular at the highest center-of-mass energy. Limiting fragmentation behavior of photons has been explored with the data, but is not observed in the measured pseudorapidity range.
Извор:
European Physical Journal C. Particles and Fields, 2015, 75, 4Финансирање / пројекти:
- SCOAP3 / License Version CC BY 4.0
DOI: 10.1140/epjc/s10052-015-3356-2
ISSN: 1434-6044; 1434-6052
WoS: 000355669300005
Scopus: 2-s2.0-84928034384
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Институција/група
VinčaTY - JOUR AU - Abelev, Betty AU - Milošević, Jovan PY - 2015 UR - https://vinar.vin.bg.ac.rs/handle/123456789/583 AB - The multiplicity and pseudorapidity distributions of inclusive photons have been measured at forward rapidities (2.3 LT eta LT 3.9) in proton-proton collisions at three center-of-mass energies, root s = 0.9, 2.76 and 7 TeV using the ALICE detector. It is observed that the increase in the average photon multiplicity as a function of beam energy is compatible with both a logarithmic and a power-law dependence. The relative increase in average photon multiplicity produced in inelastic pp collisions at 2.76 and 7 TeV center-of-mass energies with respect to 0.9 TeV are 37.2 +/- 0.3% (stat) +/- 8.8% (sys) and 61.2 +/- 0.3% (stat) +/- 7.6% (sys), respectively. The photon multiplicity distributions for all center-of-mass energies are well described by negative binomial distributions. The multiplicity distributions are also presented in terms of KNO variables. The results are compared to model predictions, which are found in general to underestimate the data at large photon multiplicities, in particular at the highest center-of-mass energy. Limiting fragmentation behavior of photons has been explored with the data, but is not observed in the measured pseudorapidity range. T2 - European Physical Journal C. Particles and Fields T1 - Inclusive photon production at forward rapidities in proton-proton collisions at root s=0.9, 2.76 and 7 TeV VL - 75 IS - 4 DO - 10.1140/epjc/s10052-015-3356-2 ER -
@article{ author = "Abelev, Betty and Milošević, Jovan", year = "2015", abstract = "The multiplicity and pseudorapidity distributions of inclusive photons have been measured at forward rapidities (2.3 LT eta LT 3.9) in proton-proton collisions at three center-of-mass energies, root s = 0.9, 2.76 and 7 TeV using the ALICE detector. It is observed that the increase in the average photon multiplicity as a function of beam energy is compatible with both a logarithmic and a power-law dependence. The relative increase in average photon multiplicity produced in inelastic pp collisions at 2.76 and 7 TeV center-of-mass energies with respect to 0.9 TeV are 37.2 +/- 0.3% (stat) +/- 8.8% (sys) and 61.2 +/- 0.3% (stat) +/- 7.6% (sys), respectively. The photon multiplicity distributions for all center-of-mass energies are well described by negative binomial distributions. The multiplicity distributions are also presented in terms of KNO variables. The results are compared to model predictions, which are found in general to underestimate the data at large photon multiplicities, in particular at the highest center-of-mass energy. Limiting fragmentation behavior of photons has been explored with the data, but is not observed in the measured pseudorapidity range.", journal = "European Physical Journal C. Particles and Fields", title = "Inclusive photon production at forward rapidities in proton-proton collisions at root s=0.9, 2.76 and 7 TeV", volume = "75", number = "4", doi = "10.1140/epjc/s10052-015-3356-2" }
Abelev, B.,& Milošević, J.. (2015). Inclusive photon production at forward rapidities in proton-proton collisions at root s=0.9, 2.76 and 7 TeV. in European Physical Journal C. Particles and Fields, 75(4). https://doi.org/10.1140/epjc/s10052-015-3356-2
Abelev B, Milošević J. Inclusive photon production at forward rapidities in proton-proton collisions at root s=0.9, 2.76 and 7 TeV. in European Physical Journal C. Particles and Fields. 2015;75(4). doi:10.1140/epjc/s10052-015-3356-2 .
Abelev, Betty, Milošević, Jovan, "Inclusive photon production at forward rapidities in proton-proton collisions at root s=0.9, 2.76 and 7 TeV" in European Physical Journal C. Particles and Fields, 75, no. 4 (2015), https://doi.org/10.1140/epjc/s10052-015-3356-2 . .