DOCUMENT METADATA
SLAC Publication: SLAC-PUB-15739
SLAC Release Date: February 19, 2014
Ntuples for NLO events at Hadron Colliders
Bern, Zvi.
We present an event-file format for the dissemination of next-to-leading-order
(NLO) predictions for QCD processes at hadron colliders. The files contain
all information required to compute generic jet-based infrared-safe observ-
ables at fixed order (without showering or hadronization), and to recompute
observables with different factorization and renormalization scales. The files
also make it possible to evaluate cross sections and distributions with differ-
ent parton distribution functions. ... Show Full Abstract
We present an event-file format for the dissemination of next-to-leading-order
(NLO) predictions for QCD processes at hadron colliders. The files contain
all information required to compute generic jet-based infrared-safe observ-
ables at fixed order (without showering or hadronization), and to recompute
observables with different factorization and renormalization scales. The files
also make it possible to evaluate cross sections and distributions with differ-
ent parton distribution functions. This in turn makes it possible to estimate
uncertainties in NLO predictions of a wide variety of observables without
recomputing the short-distance matrix elements. The event files allow a user
to choose among a wide range of commonly-used jet algorithms and jet-size
parameters.
We provide event files for a W or Z boson accompanied by up to four
jets, and for pure-jet events with up to four jets. The files are for the Large
Hadron Collider with a center of mass energy of 7 or 8 TeV.
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