July 25, 2007 to August 1, 2007
Karlsruhe University
Europe/Zurich timezone

Higgs boson production at the LHC: transverse-momentum and rapidity dependence

Jul 28, 2007, 4:50 PM
20m
Small Auditorium A (Karlsruhe University)

Small Auditorium A

Karlsruhe University

Wolfgang-Gaede-Str. 1 76131 Karlsruhe Germany
Parallel Talk Colliders - Higgs Phenomenology Colliders - Higgs Phenomenology 6 (Theory)

Speaker

Dr Giuseppe Bozzi (ITP Karlsruhe)

Description

We consider Higgs boson production by gluon fusion in hadron collisions. We study the doubly-differential transverse-momentum (qT ) and rapidity (y ) distribution of the Higgs boson in perturbative QCD. In the region of small qT (qT << M_H , M_H being the mass of the Higgs boson), we include the effect of logarithmically-enhanced contributions due to multiparton radiation to all perturbative orders. We use the impact parameter and double Mellin moments to implement and factorize the multiparton kinematics constraint of transverse- and longitudinal-momentum conservation. The logarithmic terms are then systematically resummed in exponential form. At small qT , we perform the all-order resummation of large logarithms up to next-to-next-to-leading logarithmic accuracy, while at large qT (qT ∼ M ), we apply a matching procedure that recovers the fixed-order perturbation theory up to next-to-leading order. We present quantitative results for the differential cross section in qT and y at the LHC, and we comment on the comparison with the qT cross section integrated over y .

Primary author

Dr Giuseppe Bozzi (ITP Karlsruhe)

Co-authors

Prof. Daniel De Florian (Universidad de Buenos Aires) Dr Massimiliano Grazzini (INFN-Firenze) Dr Stefano Catani (INFN-Firenze)

Presentation materials