scholarly journals THE UNDERLYING EVENT IN LARGE TRANSVERSE MOMENTUM CHARGED JET AND Z-BOSON PRODUCTION

2001 ◽  
Vol 16 (supp01a) ◽  
pp. 250-254 ◽  
Author(s):  
◽  
RICK FIELD
Keyword(s):  
Transverse Momentum ◽  
Z Boson ◽  
Charged Particles ◽  
Boson Production ◽  
Large Transverse Momentum ◽  
Initial State ◽  
Underlying Event ◽  
State Radiation ◽  
Beam Remnant ◽  
Parton Scattering

We study the behavior of the underlying event in large transverse momentum charged jet and Z-boson production at 1.8 TeV and compare with the QCD Monte-Carlo models. The data indicate that neither ISAJET or HERWIG produce enough charged particles (with pT > 0.5 GeV/c) from the "beam-beam remnant" component and that ISAJET produces too many charged particles from initial-state radiation. PYTHIA whic uses multiple parton scattering to enchance the underlying event does the best job describing the data

scholarly journals The NNLO QCD corrections to Z boson production at large transverse momentum

2016 ◽  
Vol 2016 (7) ◽  
Author(s):  
A. Gehrmann-De Ridder ◽  
T. Gehrmann ◽  
E.W.N. Glover ◽  
A. Huss ◽  
T.A. Morgan
Keyword(s):  
Transverse Momentum ◽  
Z Boson ◽  
Boson Production ◽  
Large Transverse Momentum

scholarly journals Probing underlying event in Z-boson events using event shape observables

2019 ◽  
Vol 34 (03n04) ◽  
pp. 1950022 ◽  
Author(s):  
Deepak Kar ◽  
Dimbiniaina Soanasolo Rafanoharanara
Keyword(s):  
Z Boson ◽  
Initial State Radiation ◽  
Substantial Contribution ◽  
Experimental Measurements ◽  
Event Shape ◽  
Initial State ◽  
Underlying Event ◽  
State Radiation

Experimental measurements of observables sensitive to the underlying event (UE) in Z-boson events have been performed by both ATLAS and CMS experiments at the LHC. However, in the busy LHC environment, these observables receive substantial contribution from jets originating from initial state radiation (ISR). We probe if using event shape observables in conjunction with the UE observables can help us to disentangle the effect of the UE from jets originating in ISR.

scholarly journals SM and MSSM Higgs boson production: spectra at large transverse momentum

2006 ◽  
Vol 2006 (06) ◽  
pp. 035-035 ◽  
Author(s):  
Urs Langenegger ◽  
Michael Spira ◽  
Andrey Starodumov ◽  
Peter Trüb
Keyword(s):  
Higgs Boson ◽  
Transverse Momentum ◽  
Boson Production ◽  
Large Transverse Momentum ◽  
Higgs Boson Production

scholarly journals NNLO QCD corrections to Higgs boson production at large transverse momentum

2016 ◽  
Vol 2016 (10) ◽  
Author(s):  
X. Chen ◽  
J. Cruz-Martinez ◽  
T. Gehrmann ◽  
E. W. N. Glover ◽  
M. Jaquier
Keyword(s):  
Higgs Boson ◽  
Transverse Momentum ◽  
Boson Production ◽  
Large Transverse Momentum ◽  
Higgs Boson Production

scholarly journals SIMULATION OF Z BOSON pT SPECTRUM AT TEVATRON BY LEADING-ORDER EVENT GENERATORS

2010 ◽  
Vol 25 (36) ◽  
pp. 3047-3059 ◽  
Author(s):  
SHIGERU ODAKA
Keyword(s):  
Transverse Momentum ◽  
Z Boson ◽  
Parton Shower ◽  
Event Generator ◽  
Boson Production ◽  
Proper Solution ◽  
Leading Order

We show that the transverse momentum (pT) spectrum of Z boson production measured at Fermilab Tevatron can be well reproduced by leading-order event generators if Z + 1 jet processes are included with a proper solution for the double-count problem and if the parton shower (PS) branch kinematics are defined appropriately. The choice of the PS evolution variable does not definitely determine the low-pT behavior. Our new event generator employing the limited leading-log (LLL) subtraction and a built-in leading-log PS reproduces the spectrum very well, not only in large pT regions but also at low pT down to pT = 0.

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