scholarly journals Transverse momentum distribution of the Z produced at the Large Hadron Collider and related phenomena

2010 ◽  
Vol 693 (4) ◽  
pp. 452-455 ◽  
Author(s):  
R. Gastmans ◽  
Sau Lan Wu ◽  
Tai Tsun Wu
Keyword(s):  
Transverse Momentum ◽  
Large Hadron Collider ◽  
Momentum Distribution ◽  
Hadron Collider ◽  
Transverse Momentum Distribution

scholarly journals Infrared renormalons in kinematic distributions for hadron collider processes

2021 ◽  
Vol 2021 (6) ◽  
Author(s):  
Silvia Ferrario Ravasio ◽  
Giovanni Limatola ◽  
Paolo Nason
Keyword(s):  
Transverse Momentum ◽  
Momentum Distribution ◽  
Vector Boson ◽  
Hadron Collider ◽  
High Energy ◽  
Transverse Momentum Distribution ◽  
Final State ◽  
Very High Energy ◽  
Neutral Vector ◽  
Perturbative Corrections

Abstract Infrared renormalons in Quantum Chromodynamics are associated with non-perturbative corrections to short distance observables. Linear renormalons, i.e. such that the associated non-perturbative corrections scale like one inverse power of the hard scale, can affect at a non-negligible level even the very high-energy phenomena studied at the Large Hadron Collider. Using an Abelian model, we study the presence of linear renormalons in the transverse momentum distribution of a neutral vector boson Z produced in hadronic collisions. We consider a process where the Z transverse momentum is balanced by a sizable recoil against a coloured final state particle. One may worry that such a colour configuration, not being azimuthally symmetric, could generate unbalanced soft radiation, associated in turn with linear infrared renormalons affecting the transverse momentum distribution of the vector boson. We performed a numerical calculation of the renormalon effects for this process in the so-called large b0 limit. We found no evidence of linear renormalons in the transverse momentum distribution of the Z in the large transverse-momentum region, irrespective of rapidity cuts.

scholarly journals Full O(αS) evaluation of b→sγ transverse momentum distribution

2004 ◽  
Vol 585 (1-2) ◽  
pp. 131-143 ◽  
Author(s):  
Ugo Aglietti ◽  
Roberto Sghedoni ◽  
Luca Trentadue
Keyword(s):  
Transverse Momentum ◽  
Momentum Distribution ◽  
Transverse Momentum Distribution
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