249 research outputs found
Polarised and Unpolarised Charmonium Production at Higher Orders in v
We study the unpolarised and polarised hadro-production of charmonium in
non-relativistic QCD (NRQCD) at low transverse momentum, including sufficiently
higher orders in the relative velocity, , so as to study the ratio of
and production rates.Comment: 4 pages, 1 Postscript figure, LaTeX, Presented at the QCD97
Euroconference, Montpellier, July 3-9, 1997, to appear in Nuclear Physics B
Proceedings Supplemen
Can Polarised Drell-Yan Shed More Light On The Proton Spin?
We analyse polarised Drell-Yan process using the factorisation method and
derive operator definitions for polarised parton distribution functions. We
demonstrate that a factorisation analogous to that in the unpolarised Drell-Yan
case holds in this process. We study the leading order gluonic contribution to
the first moment of polarised Drell-Yan function and show that it is consistent
with results obtained from polarised deep inelastic scattering.Comment: 12 page
Testing TeV Scale Quantum Gravity using Dijet Production at the Tevatron
Dijet production at the Tevatron including effects of virtual exchanges of
spin-2 Kaluza-Klein modes in theories with large extra dimensions is
considered. The experimental dijet mass and angular distribution are exploited
to obtain stringent limits ( TeV) on the effective string scale
.Comment: Minor changes in the text and references updated, 8 pages, LaTeX, 1
ps figur
RS resonance in di-final state production at the LHC to NLO+PS accuracy
We study the di-final state processes (, ,
, ) to NLO+PS accuracy, as a result of both the SM and RS
Kaluza-Klein graviton excitations. Decay of the electroweak gauge boson final
states to different leptonic states are included at the showering stage. A
selection of the results has been presented with PDF and scale uncertainties
for various distributions. Using the di-lepton and di-photon final states, we
present the search sensitivity, for the TeV LHC at fb
luminosity.Comment: 20 pages, 14 figure
Angular distribution of Drell-Yan process at hadron colliders to NLO-QCD in models of TeV scale gravity
In TeV scale gravity models, for dilepton production at hadron colliders, we
present the NLO-QCD corrections for the double differential cross section in
the invariant mass and scattering angle. For both ADD and RS models, the
quantitative impact of QCD corrections for extra dimension searches at LHC and
Tevatron are investigated. We present the K-factors for both ADD and RS models
at LHC and Tevatron. Inclusion of QCD corrections to NLO stabilises the cross
section with respect to scale variations.Comment: 35 pages, 12 figures, version to appear in NP
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