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ATLAS measurements of vector boson production, inclusive and with associated jets

Nucl.Part.Phys.Proc. 258-259 (2015) 11-14

by: Orlando, Nicola (INFN, Lecce)

Abstract:
The most recent measurements of inclusive vector boson production and vector boson production in association with jets and heavy flavours with the ATLAS experiment are summarised. The presented analyses use proton–proton collision data, collected at center of mass energy

ColorFull -- a C++ library for calculations in SU(Nc) color space

LU-TP-14-43
MCNET-14-26
arXiv:1412.3967
Eur.Phys.J. C75 (2015) 236

by: Sjodahl, Malin (Lund U., Dept. Theor. Phys.)

Abstract:
ColorFull, a C++ package for treating QCD color structure, is presented. ColorFull, which utilizes the trace basis approach, is intended for interfacing with event generators, but can also be used as a stand-alone package for squaring QCD amplitudes, calculating interferences, and describing the effect of gluon emission and gluon exchange.

Interplay between hydrodynamics and jets

CERN-PH-TH-2014-146
MCNET-14-16
arXiv:1408.0903
Nucl.Phys. A931 (2014) 388-392

by: Zapp, Korinna C. (CERN) et al.

Abstract:
By combining the jet quenching Monte Carlo JEWEL with a realistic hydrodynamic model for the background we investigate the sensitivity of jet observables to details of the medium model and quantify the influence of the energy and momentum lost by jets on the background evolution. On the level of event averaged source terms the effects are small and are caused mainly by the momentum transfer.

Drell-Yan lepton pair production at NNLO QCD with parton showers

SLAC-PUB-15961
DESY-14-073
MCNET-14-10
arXiv:1405.3607
Phys.Rev. D91 (2015) 074015

by: Höche, Stefan (SLAC) et al.

Abstract:
We present a simple approach to combine NNLO QCD calculations and parton showers, based on the unlops technique. We apply the method to the computation of Drell-Yan lepton-pair production at the Large Hadron Collider. We comment on possible improvements and intrinsic uncertainties.

The automated computation of tree-level and next-to-leading order differential cross sections, and their matching to parton shower simulations

CERN-PH-TH-2014-064
CP3-14-18
LPN14-066
MCNET-14-09
ZU-TH-14-14
arXiv:1405.0301
JHEP 1407 (2014) 079

by: Alwall, J. (Taiwan, Natl. Taiwan U.) et al.

Abstract:

Uncertainties in MEPS@NLO calculations of h+jets

SLAC-PUB-15899
IPPP-14-08
DCPT-14-16
LPN14-009
MCNET-14-02
arXiv:1401.7971
Phys.Rev. D90 (2014) 014012

by: Hoeche, Stefan (SLAC) et al.

Abstract:
Uncertainties in the simulation of Higgs boson production with up to two jets at next-to-leading-order accuracy are investigated. Traditional uncertainty estimates based on scale variations are extended employing different functional forms for the central scale, and the impact of details in the implementation of the parton shower is discussed.