Elastic and inelastic photoproduction of $J/\psi$ mesons at HERA - INSPIRE

DataBETA

Elastic and inelastic photoproduction of $J/\psi$ mesons at HERA

H1

Collaboration

Mar, 1996

27 pages

Published in:

Nucl.Phys.B 472 (1996) 3-31

e-Print:

hep-ex/9603005 [hep-ex]

DOI:

10.1016/0550-3213(96)00274-X

Report number:

DESY-96-037

Experiments:

DESY-HERA-H1

View in:

reference search295 citations

Citations per year

Abstract:

Results on \jpsi\ production in

e p

interactionsin the H1 experiment at HERA are presented. The \jpsi\ mesons are produced by almost real photons (

Q~2\approx 0

) and detected via their leptonic decays. The data have been taken in 1994 and correspond to an integrated luminosity of 2.7\,\mbox{pb}~{-1}. The

\gamma p

cross section for elastic \jpsi\ production is observed to increase strongly with the \cm\ energy. The cross section for diffractive

J/\psi

production with proton dissociation is found to be of similar magnitude as the elastic cross section. Distributions of transverse momentum and decay angle are studied and found to be in accord with a diffractive production mechanism. For inelastic \jpsi\ production the total

\gamma p

cross section, the distribution of transverse momenta, and the elasticity of the \jpsi\ are compared to NLO QCD calculations in a colour singlet model and agreement is found. Diffractive \psiprime\ production has been observed and a first estimate of the ratio to \jpsi\ production in the HERA energy regime is given.

Note:

27 pages, latex, 9 Figures appended as uuencoded file Report-no: DESY 96-037

14.40.G
13.60.H
Photoproduction
J / ψ mesons
J/ ψ mesons
positron p: colliding beams
colliding beams: positron p
exchange: one-photon
one-photon: exchange
photon p: inclusive reaction

References(51)

Figures(0)

Exclusive vector meson production at HERA

A. Donnachie
(
- Manchester U.
)
,
P.V. Landshoff
(
- Cambridge U.
)

- Phys.Lett.B 348 (1995) 213-218
•
e-Print:
- hep-ph/9411368
•
DOI:
- 10.1016/0370-2693(95)00115-2

Total cross-sections

A. Donnachie
(
- Manchester U.
)
,
P.V. Landshoff
(
- CERN
)

- Phys.Lett.B 296 (1992) 227-232
•
e-Print:
- hep-ph/9209205
•
DOI:
- 10.1016/0370-2693(92)90832-O

The Two Pomerons

P.V. Landshoff
(
- Cambridge U.
)

- ,
- In *Zuoz 1994, Proceedings, Hadronic aspects of collider physics* 135-150, and Preprint - Landshoff, P.V. (94,rec.Nov.) 16 p
•
e-Print:
- hep-ph/9410250

Theory of strong interactions

J.J. Sakurai
(
- Chicago U., EFI
)

- Annals Phys. 11 (1960) 1-48
•
DOI:
- 10.1016/0003-4916(60)90126-3

Form-factors and vector mesons

Murray Gell-Mann
(
- Caltech
)
,
Fredrik Zachariasen
(
- Caltech
)

- Phys.Rev. 124 (1961) 953-964
•
DOI:
- 10.1103/PhysRev.124.953

The Hadronic Properties of the Photon in High-Energy Interactions

- Rev.Mod.Phys. 50 (1978) 261,
- Rev.Mod.Phys. 51 (1979) 2, 407 (erratum)
•
DOI:
- 10.1103/RevModPhys.50.261

High-energy Photoproduction of Charmed States

- Ann.Rev.Nucl.Part.Sci. 35 (1985) 397-454
•
DOI:
- 10.1146/annurev.ns.35.120185.002145

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 J / psi photoproduction as a probe of the gluon density

M.G. Ryskin
(
- St. Petersburg, INP
)
,
R.G. Roberts
(
- Rutherford
)
,
Alan D. Martin
(
- Durham U.
)
,
E.M. Levin
(
- St. Petersburg, INP and
- Rio de Janeiro, CBPF
)

- Z.Phys.C 76 (1997) 231-239
•
e-Print:
- hep-ph/9511228
•
DOI:
- 10.1007/s002880050547

A Measurement of the proton structure function f2 (x, Q**2)

H1

Collaboration

•

T. Ahmed

et al.

- Nucl.Phys.B 439 (1995) 471-502
•
e-Print:
- hep-ex/9503001
•
DOI:
- 10.1016/0550-3213(95)98236-U

Measurement of the proton structure function F2 from the 1993 HERA data

ZEUS

Collaboration

•

M. Derrick
(
- Argonne, PHY
)

et al.

- Z.Phys.C 65 (1995) 379-398
•
DOI:
- 10.1007/BF01556128

Production of charmonium in 250-GeV $\mu^+$ - iron interactions

European Muon

Collaboration

•

J.J. Aubert
(
- Unlisted, FR
)

et al.

- Nucl.Phys.B 213 (1983) 1-30
•
DOI:
- 10.1016/0550-3213(83)90173-6

Muoproduction of J / psi and the gluon distribution of the nucleon

European Muon

Collaboration

•

J. Ashman
(
- Sheffield U.
)

et al.

- Z.Phys.C 56 (1992) 21-28,
•
DOI:
- 10.1007/BF01589703

Inelastic J / psi production in deep inelastic scattering from hydrogen and deuterium and the gluon distribution of free nucleons

New Muon (NMC)

Collaboration

•

D. Allasia
(
- INFN, Turin and
- Turin U.
)

et al.

- Phys.Lett.B 258 (1991) 493-498
•
DOI:
- 10.1016/0370-2693(91)91124-E

Inelastic Photoproduction of J/psi and Upsilon by Gluons

Edmond L. Berger
(
- Argonne
)
,
Daniel L. Jones
(
- Argonne
)

- Phys.Rev.D 23 (1981) 1521-1530
•
DOI:
- 10.1103/PhysRevD.23.1521

On Inelastic Leptoproduction of Heavy Quarkonium States

R. Baier
(
- Bielefeld U.
)
,
R. Ruckl
(
- Bielefeld U.
)

- Nucl.Phys.B 201 (1982) 1-15
•
DOI:
- 10.1016/0550-3213(82)90374-1

Relativistic corrections to photoproduction of J / psi

H. Jung
(
- Aachen, Tech. Hochsch.
)
,
D. Krucker
(
- Aachen, Tech. Hochsch.
)
,
C. Greub
(
- Zurich U.
)
,
D. Wyler
(
- Zurich U.
)

- Z.Phys.C 60 (1993) 721-730
•
DOI:
- 10.1007/BF01558402

Inelastic J / psi photoproduction

- Phys.Lett.B 348 (1995) 657-664
•
e-Print:
- hep-ph/9411372
•
DOI:
- 10.1016/0370-2693(95)00155-E

QCD corrections to inelastic J / psi photoproduction

Michael Krämer
(
- DESY
)

- Nucl.Phys.B 459 (1996) 3-50
•
e-Print:
- hep-ph/9508409
•
DOI:
- 10.1016/0550-3213(95)00568-4

$J/\psi$ production in $p \bar{p}$ collisions at $\sqrt{s}$ = 1.8-TeV

D0

Collaboration

•

S. Abachi

et al.

- Phys.Lett.B 370 (1996) 239-248
•
DOI:
- 10.1016/0370-2693(96)00067-6

Color octet contributions to $J/\psi$ photoproduction

Matteo Cacciari
(
- DESY
)
,
Michael Krämer
(
- DESY
)

- Phys.Rev.Lett. 76 (1996) 4128-4131
•
e-Print:
- hep-ph/9601276
•
DOI:
- 10.1103/PhysRevLett.76.4128

Photoproduction of J / psi in the forward region

James Amundson
(
- Wisconsin U., Madison
)
,
Sean Fleming
(
- Wisconsin U., Madison
)
,
Ivan Maksymyk
(
- Texas U.
)

- Phys.Rev.D 56 (1997) 5844-5850
•
e-Print:
- hep-ph/9601298
•
DOI:
- 10.1103/PhysRevD.56.5844

Photoproduction of J / psi mesons at HERA

H1

Collaboration

•

T. Ahmed

et al.

- Phys.Lett.B 338 (1994) 507-518
•
DOI:
- 10.1016/0370-2693(94)90806-0

Measurement of the cross-section for the reaction $\gamma p \to J/\psi p$ with the ZEUS detector at HERA

ZEUS

Collaboration

•

M. Derrick
(
- Argonne, PHY
)

et al.

- Phys.Lett.B 350 (1995) 120-134
•
e-Print:
- hep-ex/9503015
•
DOI:
- 10.1016/0370-2693(95)00403-8

The Two photon particle production mechanism. Physical problems. Applications. Equivalent photon approximation

V.M. Budnev
(
- Sobolev IM, Novosibirsk
)
,
I.F. Ginzburg
(
- Sobolev IM, Novosibirsk
)
,
G.V. Meledin
(
- Sobolev IM, Novosibirsk
)
,
V.G. Serbo
(
- Sobolev IM, Novosibirsk
)

- Phys.Rept. 15 (1975) 181-281
•
DOI:
- 10.1016/0370-1573(75)90009-5

1-25 of 51
1
2
3
25 / page