Browsing by Subject "QCD"

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    Electromagnetic proton form factors in large Nc QCD
    (2004) Dominguez, Cesareo A; Thapedi, Teboho
    The electromagnetic form factors of the proton are obtained using a particular realization of QCD in the large Nc limit (QCD∞), which sums up the infinite number of zero-width resonances to yield an Euler's Beta function (Dual-QCD∞). The form factors F1(q2) and F2(q2), as well as GM(q2) agree very well with reanalyzed space-like data in the whole range of momentum transfer. In addition, the predicted ratio μpGE/GM is in good agreement with recent polarization transfer measurements at Jefferson Lab.
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    Measurement of the cross section for inclusive isolated-photon production in pp collisions at s√=13 TeV using the ATLAS detector
    (2017) Aaboud, M; Aad, G; Abbott, B; Abdallah, J; Abdinov, O; Abeloos, B; Abidi, S H; AbouZeid, O S; Abraham, N L; Abramowicz, H; Abreu, H; Abreu, R; Abulaiti, Y; Acharya, B S; Adachi, S; Adamczyk, L; Adams, D L; Adelman, J; Adersberger, M; Adye, T; Affolder, A A; Agatonovic-Jovin, T; Agheorghiesei, C; Aguilar-Saavedra, J A; Ahlen, S P; Ahmadov, F; Aielli, G; Akatsuka, S; Akerstedt, H; Åkesson, T P A; Akimov, A V; Alberghi, G L
    Here, inclusive isolated-photon production in pp collisions at a centre-of-mass energy of 13TeV is studied with the ATLAS detector at the LHC using a data set with an integrated luminosity of 3.2fb -1. The cross section is measured as a function of the photon transverse energy above 125GeV in different regions of photon pseudorapidity. Next-to-leading-order perturbative QCD and Monte Carlo event-generator predictions are compared to the cross-section measurements and provide an adequate description of the data.