Cross-section as a function of the partonic momentum fractions x (left) and z (right), for RHIC and LHC Run II . Since these experiments involve p + p collisions, we consider x = x 1 as given by Eq. (2.2).

Cross-section as a function of the partonic momentum fractions x (left) and z (right), for RHIC and LHC Run II . Since these experiments involve p + p collisions, we consider x = x 1 as given by Eq. (2.2).

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In the context of high-energy physics, a reliable description of the parton-level kinematics plays a crucial role for understanding the internal structure of hadrons and improving the precision of the calculations. Here, we study the production of one hadron and a direct photon, including up to Next-to-Leading Order Quantum Chromodynamics and Leadi...

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Context 1
... experimentally-accessible quantities, we can compute the differential cross-section as a function of the partonic momentum fractions, x 1 , x 2 and z. For p + p collisions we consider only the distributions w.r.t. x 1 due to the symmetry of the system. In what follows, x and x 1 will be used interchangeably. The corresponding plots are shown in Fig. 4, for x = x 1 (left) and z (right). We notice that the experimental cut in p γ T induces a restriction on the maximum value of x involved in the collision. In fact, using a LO approximation, we ...
Context 2
... we will use this information to restrict the x-range in the correlation analysis presented in the next section. In this way, we will avoid dealing with regions with a negligible amount of events. Notice that the higher the energy of the process, the lower the x-range accessible by the experiment. Regarding the dependence in z (right panel of Fig. 4), it reaches almost the endpoint region (i.e. z = 1) with a reasonable amount of events. The fact that we impose p π T ≥ 2 GeV translates into a lower bound for z given ...

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