arXiv subjects

Farida Iddir

Publications and source records attributed to Farida Iddir.

3 recordsLinked to original sources

arXiv2020

Predictions for the isolated diphoton production through NNLO in QCD and comparison to the 8 TeV ATLAS data

We present cross section predictions for the isolated diphoton production in next-to-next-to-leading order (NNLO) QCD using the computational framework MATRIX. Both the integrated and the differential fiducial cross sections are calculated. We found that the arbitrary setup of the isolation procedure introduces uncertainties with a size comparable to the estimation of the theoretical uncertainties obtained with the customary variation of the factorization and renormalization scales. This fact is taken into account in the final result.

hep-ph↗

arXiv2017

Determination of the strong coupling constant from ATLAS measurements of the inclusive isolated prompt photon cross section at 7 TeV

We present an estimation of the strong coupling constant alphas(MZ) using, for the first time, the production of prompt photon process in proton-proton collisions at the LHC. ATLAS measurements of the inclusive isolated prompt photon cross section at 7 TeV are exploited. Both theoretical and experimental uncertainties are estimated and the strong coupling constant has been determined to be alphas(MZ)= 0.1183 +- 0.0038, to NLO accuracy.

hep-ph↗

arXiv2004

Hybrid Mesons Masses in a Quark-Gluon Constituent Model

QCD theory allows the existence of states which cannot be built by the naive quark model; both theoretical arguments and experimental data confirm the hypothesis that gluons may have freedom degrees at the constituent level, and should be confined. In this work, we use a phenomenological potential motivated by QCD (with some relativistic corrections) to determine the masses and the wavefunctions of several hybrid mesons, within the context of a constituent q-qbar-g model. We compare our estimates of the masses with the predictions of other theoretical models and with the observed masses of candidates.

hep-ph↗