We perform a first precision calculation of the transverse-momentum (q(T)) distribution of slepton pair and slepton-sneutrino associated production at the CERN Large Hadron Collider. We implement soft-gluon resummation at the next-to-leading logarithmic level and consistently match the obtained result to the pure fixed-order perturbative result at leading order in the QCD coupling constant, i.e. O(alpha(s)). We give numerical predictions for tau(1)tau(*)(1) and tau(1)nu(*)(tau)+tau(*)(1)nu(tau) production, also implementing recent parametrizations of nonperturbative effects. The results show a relevant contribution of resummation both in the small and intermediate q(T)-regions and little dependence on unphysical scales and nonperturbative contributions.
Transverse-momentum resummation for slepton-pair production at the CERN Large Hadron Collider
BOZZI, GIUSEPPE;
2006-01-01
Abstract
We perform a first precision calculation of the transverse-momentum (q(T)) distribution of slepton pair and slepton-sneutrino associated production at the CERN Large Hadron Collider. We implement soft-gluon resummation at the next-to-leading logarithmic level and consistently match the obtained result to the pure fixed-order perturbative result at leading order in the QCD coupling constant, i.e. O(alpha(s)). We give numerical predictions for tau(1)tau(*)(1) and tau(1)nu(*)(tau)+tau(*)(1)nu(tau) production, also implementing recent parametrizations of nonperturbative effects. The results show a relevant contribution of resummation both in the small and intermediate q(T)-regions and little dependence on unphysical scales and nonperturbative contributions.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
