Probes of the small $x$ gluon via exclusive $J/\psi$ and $\Upsilon$ production at HERA and the LHC - INSPIRE

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Probes of the small $x$ gluon via exclusive $J/\psi$ and $\Upsilon$ production at HERA and the LHC

S.P. Jones
(
- Liverpool U., Dept. Math.
)
,
A.D. Martin
(
- Durham U. and
- Durham U., IPPP
)
,
M.G. Ryskin
(
- Durham U. and
- Durham U., IPPP and
- St. Petersburg, INP
)
,
T. Teubner
(
- Liverpool U., Dept. Math.
)

Jul 26, 2013

18 pages

Published in:

JHEP 11 (2013) 085

e-Print:

1307.7099 [hep-ph]

DOI:

10.1007/JHEP11(2013)085

Report number:

IPPP-13-52,
DCPT-13-104,
LTH-980

View in:

ADS Abstract Service

reference search162 citations

Citations per year

Abstract:

New, more precise data on diffractive J/psi photoproduction and on exclusive J/psi production in the process pp -> p + J/psi + p at the LHC allow a better constraint on the low-x gluon distribution in the domain of relatively low scales Q^2 ~ 2-6 GeV^2. We account for the `skewed' effect and for the real part of the amplitude, as well as for the absorptive corrections in the case of the exclusive process pp -> p + J/psi + p. The predictions for exclusive J/psi production at \sqrt{s}=8 and 14 TeV and for exclusive Upsilon(1S) production at 7, 8 and 14 TeV are also given. We present results at leading and next-to-leading order.

Note:

17 pages, 7 figures, 3 tables

Deep Inelastic Scattering (Phenomenology)
Hadronic Colliders
small-x
J/psi(3100): photoproduction
Upsilon(9460): exclusive production
higher-order: 1
CERN LHC Coll
diffraction
photon p: exclusive reaction
DESY HERA Stor

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Figures(11)

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