Open AccessAntenna subtraction with hadronic initial states
Author(s) -
Alejandro Daleo,
T. Gehrmann,
D. Maître
Publication year - 2007
Publication title -
journal of high energy physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.998
H-Index - 261
eISSN - 1126-6708
pISSN - 1029-8479
DOI - 10.1088/1126-6708/2007/04/016
Subject(s) - physics , formalism (music) , factorization , subtraction , phase space , antenna (radio) , computation , observable , hadron , extension (predicate logic) , particle physics , computer science , algorithm , mathematics , telecommunications , arithmetic , quantum mechanics , visual arts , musical , art , programming language
The antenna subtraction method for the computation of higher ordercorrections to jet observables and exclusive cross sections at colliderexperiments is extended to include hadronic initial states. In addition to thealready known antenna subtraction with both radiators in the final state(final-final antennae), we introduce antenna subtractions with one or tworadiators in the initial state (initial-final or initial-initial antennae). Forthose, we derive the phase space factorization and discuss the allowed phasespace mappings at NLO and NNLO. We present integrated forms for all antennafunctions relevant to NLO calculations, and describe the construction of thefull antenna subtraction terms at NLO on two examples. The extension of theformalism to NNLO is outlined.Comment: 33 pages, 3 figure
Accelerating Research
Robert Robinson Avenue,
Oxford Science Park, Oxford
OX4 4GP, United Kingdom
Address
John Eccles HouseRobert Robinson Avenue,
Oxford Science Park, Oxford
OX4 4GP, United Kingdom