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Joint resummation for slepton pair production at hadron colliders

Abstract : We present a precision calculation of the transverse-momentum and invariant-mass distributions for supersymmetric particle pair production at hadron colliders, focusing on Drell-Yan like slepton pair and slepton-sneutrino associated production at the CERN Large Hadron Collider. We implement the joint resummation formalism at the next-to-leading logarithmic accuracy with a process-independent Sudakov form factor, thus ensuring a universal description of soft-gluon emission, and consistently match the obtained result with the pure perturbative result at the first order in the strong coupling constant, i.e. at O(alpha_s). We also implement three different recent parameterizations of non-perturbative effects. Numerically, we give predictions for ~e_R ~e_R^* production and compare the resummed cross section with the perturbative result. The dependence on unphysical scales is found to be reduced, and non-perturbative contributions remain small.
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http://hal.in2p3.fr/in2p3-00173505
Contributor : Lpsc Bibliotheque <>
Submitted on : Thursday, September 20, 2007 - 9:01:59 AM
Last modification on : Monday, July 20, 2020 - 9:18:26 AM

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G. Bozzi, B. Fuks, M. Klasen. Joint resummation for slepton pair production at hadron colliders. Nuclear Physics B, Elsevier, 2008, 794, pp.46-60. ⟨10.1016/j.nuclphysb.2007.10.021⟩. ⟨in2p3-00173505⟩

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