The multiplicity and pseudorapidity distribu- tions of inclusive photons have been measured at forward rapidities (2.3 < η < 3.9) in proton–proton collisions at three center-of-mass energies, √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 multi- plicity 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 com- pared to model predictions, which are found in general to underestimate the data at large photon multiplicities, in par- ticular at the highest center-of-mass energy. Limiting frag- mentation behavior of photons has been explored with the data, but is not observed in the measured pseudorapidity range.
Eser Adı (dc.title) | Inclusive photon production at forward rapidities in proton–proton collisions at √s = 0.9, 2.76 and 7 TeV |
Yayın Türü (dc.type) | Makale |
Yazar/lar (dc.contributor.author) | KARASU UYSAL, Ayben |
Yazar/lar (dc.contributor.author) | ALICE Collaboration |
DOI Numarası (dc.identifier.doi) | 10.1140/epjc/s10052-015-3356-2 |
Atıf Dizini (dc.source.database) | Wos |
Atıf Dizini (dc.source.database) | Scopus |
Konu Başlıkları (dc.subject) | LHC |
Konu Başlıkları (dc.subject) | Inclusive Photon Production |
Konu Başlıkları (dc.subject) | ALICE |
Yayın Tarihi (dc.date.issued) | 2015 |
Kayıt Giriş Tarihi (dc.date.accessioned) | 2019-07-05T11:24:36Z |
Açık Erişim tarihi (dc.date.available) | 2019-07-05T11:24:36Z |
Orcid (dc.identifier.orcid) | 0000-0001-6297-2532 |
Özet (dc.description.abstract) | The multiplicity and pseudorapidity distribu- tions of inclusive photons have been measured at forward rapidities (2.3 < η < 3.9) in proton–proton collisions at three center-of-mass energies, √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 multi- plicity 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 com- pared to model predictions, which are found in general to underestimate the data at large photon multiplicities, in par- ticular at the highest center-of-mass energy. Limiting frag- mentation behavior of photons has been explored with the data, but is not observed in the measured pseudorapidity range. |
Tek Biçim Adres (dc.identifier.uri) | https://hdl.handle.net/20.500.12498/507 |