Hard exclusive meson production and nonforward parton distributions - INSPIRE

DataBETA

Hard exclusive meson production and nonforward parton distributions

Nov, 1997

23 pages

Published in:

Eur.Phys.J.C 5 (1998) 119-128

e-Print:

hep-ph/9711227 [hep-ph]

DOI:

Report number:

TUM-T39-97-28

View in:

ADS Abstract Service

reference search178 citations

Citations per year

Abstract:

We present an analysis of twist-2, leading order QCD amplitudes for hard exclusive leptoproduction of mesons in terms of double/nonforward parton distribution functions. After reviewing some general features of nonforward nucleon matrix elements of twist-2 QCD string operators, we propose a phenomenological model for quark and gluon nonforward distribution functions. The corresponding QCD evolution equations are solved in the leading logarithmic approximation for flavor nonsinglet distributions. We derive explicit expressions for hard exclusive pi^0, eta, and neutral vector meson production amplitudes and discuss general features of the corresponding cross sections.

lepton nucleon: exclusive reaction
hard scattering
photon p: exclusive reaction
photon: longitudinal
vector meson: electroproduction
rho(770)0
omega(783)
Phi(1020)
pseudoscalar meson: electroproduction
pi0

References(38)

Figures(0)

The Nonforward {QCD} Ladder Diagrams

Jochen Bartels
(
- Hamburg U.
)
,
M. Loewe
(
- Hamburg U.
)

- Z.Phys.C 12 (1982) 263
•
DOI:
- 10.1007/BF01558265

Semihard Processes in QCD

- Phys.Rept. 100 (1983) 1-150,
- Phys. Rep. 100 ( 1983) 1-150
•
DOI:
- 10.1016/0370-1573(83)90022-4

NONLOCAL LIGHT CONE EXPANSIONS AND EVOLUTION EQUATIONS

- Z.Phys.C 26 (1985) 591-600,
- Z. Phys. C26 ( 1985) 591-600
•
DOI:
- 10.1007/BF01551803

The Altarelli-Parisi Kernel as Asymptotic Limit of an Extended Brodsky-Lepage Kernel

F.M. Dittes
(
- Forschungszentrum Dresden Rossendorf
)
,
Dieter Mueller
(
- Leipzig U.
)
,
D. Robaschik
(
- Leipzig U.
)
,
B. Geyer
(
- Leipzig U.
)
,
J. Horejsi
(
- Charles U.
)

- Phys.Lett.B 209 (1988) 325-329
•
DOI:
- 10.1016/0370-2693(88)90955-0

Wave functions, evolution equations and evolution kernels from light ray operators of QCD

Dieter Müller
(
- Leipzig U.
)
,
D. Robaschik
(
- Leipzig U.
)
,
B. Geyer
(
- Leipzig U.
)
,
F.-M. Dittes
(
- Forschungszentrum Dresden Rossendorf
)
,
J. Hořejši
(
- Charles U.
)

- Fortsch.Phys. 42 (1994) 101-141
•
e-Print:
- hep-ph/9812448
•
DOI:
- 10.1002/prop.2190420202

Deeply virtual Compton scattering

Xiang-Dong Ji
(
- Maryland U. and
- MIT, LNS and
- Washington U., Seattle
)

- Phys.Rev.D 55 (1997) 7114-7125
•
e-Print:
- hep-ph/9609381
•
DOI:
- 10.1103/PhysRevD.55.7114

Gauge-Invariant Decomposition of Nucleon Spin

Xiang-Dong Ji
(
- MIT, LNS and
- Washington U., Seattle
)

- Phys.Rev.Lett. 78 (1997) 610-613
•
e-Print:
- hep-ph/9603249
•
DOI:
- 10.1103/PhysRevLett.78.610

Scaling limit of deeply virtual Compton scattering

A.V. Radyushkin
(
- Old Dominion U. and
- Jefferson Lab
)

- Phys.Lett.B 380 (1996) 417-425
•
e-Print:
- hep-ph/9604317
•
DOI:
- 10.1016/0370-2693(96)00528-X

Asymmetric gluon distributions and hard diffractive electroproduction

A.V. Radyushkin
(
- Old Dominion U. and
- Jefferson Lab
)

- Phys.Lett.B 385 (1996) 333-342
•
e-Print:
- hep-ph/9605431
•
DOI:
- 10.1016/0370-2693(96)00844-1

Parton Distribution and Decay Functions

John C. Collins
(
- IIT, Chicago
)
,
Davison E. Soper
(
- Oregon U.
)

- Nucl.Phys.B 194 (1982) 445-492
•
DOI:
- 10.1016/0550-3213(82)90021-9

- Phys.Rev.D 56 338

Factorization for hard exclusive electroproduction of mesons in QCD

John C. Collins
(
- Penn State U. and
- CERN
)
,
Leonid Frankfurt
(
- Tel Aviv U.
)
,
Mark Strikman
(
- Penn State U.
)

- Phys.Rev.D 56 (1997) 2982-3006
•
e-Print:
- hep-ph/9611433
•
DOI:
- 10.1103/PhysRevD.56.2982

Exclusive production of neutral vector mesons at the electron - proton collider HERA

J.A. Crittenden
(
- Bonn U.
)

- Berlin, Germany: Springer (1997) 100 p
•
e-Print:
- hep-ex/9704009

Nondiagonal parton distribution in the leading logarithmic approximation

- Phys.Lett.B 418 (1998) 345-354,
- Phys.Lett.B 429 (1998) 414 (erratum)
•
e-Print:
- hep-ph/9703449
•
DOI:
- 10.1016/S0370-2693(97)01152-0

Diffractive J / psi electroproduction in LLA QCD

M.G. Ryskin
(
- Lund U. and
- St. Petersburg, INP
)

- Z.Phys.C 57 (1993) 89-92
•
DOI:
- 10.1007/BF01555742

Diffractive leptoproduction of vector mesons in QCD

- Phys.Rev.D 50 (1994) 3134-3144
•
e-Print:
- hep-ph/9402283
•
DOI:
- 10.1103/PhysRevD.50.3134

Hard diffractive electroproduction of vector mesons in QCD

- Phys.Rev.D 54 (1996) 3194-3215
•
e-Print:
- hep-ph/9509311
•
DOI:
- 10.1103/PhysRevD.54.3194

The QCD description of diffractive rho meson electroproduction

- Phys.Rev.D 55 (1997) 4329-4337
•
e-Print:
- hep-ph/9609448
•
DOI:
- 10.1103/PhysRevD.55.4329

The Future of Mr. Jefferson's laboratory (nee CEBAF)

Carl E. Carlson
(
- William-Mary Coll.
)

- Nucl.Phys.A 622 (1997) 66C-77C,
- Nucl. Phys. A622 (1997) 66c-77c
•
e-Print:
- hep-ph/9701391
•
DOI:
- 10.1016/S0375-9474(97)00333-3

Gluon form-factor of the proton from QCD sum rules

Vladimir M. Braun
(
- Munich, Max Planck Inst.
)
,
P. Gornicki
(
- Heidelberg, Max Planck Inst.
)
,
L. Mankiewicz
(
- CERN
)
,
A. Schafer
(
- Frankfurt U.
)

- Phys.Lett.B 302 (1993) 291-298
•
DOI:
- 10.1016/0370-2693(93)90399-3

A Study of off forward parton distributions

- Phys.Rev.D 56 (1997) 5511-5523
•
e-Print:
- hep-ph/9702379
•
DOI:
- 10.1103/PhysRevD.56.5511

Off - forward quark distributions of the nucleon in the large N(c) limit

V.Yu. Petrov
(
- St. Petersburg, INP
)
,
P.V. Pobylitsa
(
- St. Petersburg, INP
)
,
Maxim V. Polyakov
(
- St. Petersburg, INP
)
,
I. Bornig
(
- Ruhr U., Bochum
)
,
K. Goeke
(
- Ruhr U., Bochum
)

et al.

- Phys.Rev.D 57 (1998) 4325-4333
•
e-Print:
- hep-ph/9710270
•
DOI:
- 10.1103/PhysRevD.57.4325

Exclusive Processes in Perturbative Quantum Chromodynamics

G.Peter Lepage
(
- Cornell U., LNS
)
,
Stanley J. Brodsky
(
- SLAC
)

- Phys.Rev.D 22 (1980) 2157
•
DOI:
- 10.1103/PhysRevD.22.2157

Polarized parton distributions in the nucleon

T. Gehrmann
(
- Durham U.
)
,
W.James Stirling
(
- Durham U.
)

- Phys.Rev.D 53 (1996) 6100-6109
•
e-Print:
- hep-ph/9512406
•
DOI:
- 10.1103/PhysRevD.53.6100

Evolution Equations for QCD String Operators

- Nucl.Phys.B 311 (1989) 541-584
•
DOI:
- 10.1016/0550-3213(89)90168-5

1-25 of 38
1
2
25 / page