Total hadronic cross-section of photon-photon interactions at LEP

The total hadronic cross-section sigma_gg(W) for the interaction of real photons, gg->hadrons, is measured for gg centre-of-mass energies 10 e+e-g*g* -> e+e- hardrons, using a luminosity function for the photon flux together with form factors for extrapolating to real photons (Q^2=0 GeV^2). The data were taken with the OPAL detector at LEP at e+e- centre-of-mass energies 161, 172 and 183 GeV. The cross-section sigma_gg(W) is compared with Regge factorisation and with the energy dependence observed in gp and pp interactions. The data are also compared to models which predict a faster rise of sigma_gg(W) compared to gp and pp interactions due to additional hard gg interactions not present in hadronic collisions.

Note:

28 pages, LaTeX, including 14 eps figs, submitted to European Physical Jour. nal C. Typo fixed in Table 3 Report-no: CERN-EP/99-076

electron positron: colliding beams
exchange: two-photon
photon photon: interaction
hadron: photoproduction
charged particle: multiplicity
cross section: energy dependence
factorization
Regge poles
photon p: interaction
p p: interaction

References(36)

Figures(0)

Measurement of the Total Photon-photon Cross-section for the Production of Hadrons at Small $Q^2$

PLUTO

Collaboration

•

Christoph Berger
(
- Aachen, Tech. Hochsch.
)

et al.

- Phys.Lett.B 149 (1984) 421-426
•
DOI:
- 10.1016/0370-2693(84)90437-4

A measurement of the total hadronic cross-section in tagged $\gamma\gamma$ reactions

TPC/Two Gamma

Collaboration

•

H. Aihara

et al.

- Phys.Rev.D 41 (1990) 2667
•
DOI:
- 10.1103/PhysRevD.41.2667

Measurement of the Total Hadronic Cross-section in Photon-photon Interactions

TPC/Two Gamma

Collaboration

•

D. Bintinger
(
- UC, San Diego
)

et al.

- Phys.Rev.Lett. 54 (1985) 763
•
DOI:
- 10.1103/PhysRevLett.54.763

Total cross-section of two photon production of hadrons

et al.

- Z.Phys.C 53 (1992) 219-224
•
DOI:
- 10.1007/BF01597557

Cross-section of hadron production in gamma gamma collisions at LEP

L3

Collaboration

•

M. Acciarri

et al.

- Phys.Lett.B 408 (1997) 450-464
•
DOI:
- 10.1016/S0370-2693(97)00933-7

High-energy physics event generation with PYTHIA 5.7 and JETSET 7.4

Torbjorn Sjostrand
(
- CERN
)

- Comput.Phys.Commun. 82 (1994) 74-90,
- CERN Geneva - TH. 7111 (93/12,rec.Jan.94) 17 p. and e: CERN th-7111-93
•
DOI:
- 10.1016/0010-4655(94)90132-5

Hadronic photon-photon interactions at high-energies

R. Engel
(
- Leipzig U. and
- Siegen U.
)
,
J. Ranft
(
- Annecy, LAPP
)

- Phys.Rev.D 54 (1996) 4244-4262
•
e-Print:
- hep-ph/9509373
•
DOI:
- 10.1103/PhysRevD.54.4244

Photoproduction within the two component dual parton model. 1. Amplitudes and cross-sections

R. Engel
(
- Leipzig U. and
- Siegen U.
)

- Z.Phys.C 66 (1995) 203-214
•
DOI:
- 10.1007/BF01496594

Small x: Two pomerons!

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

- Phys.Lett.B 437 (1998) 408-416
•
e-Print:
- hep-ph/9806344
•
DOI:
- 10.1016/S0370-2693(98)00899-5

Measurement of the total photon-proton cross-section and its decomposition at 200-GeV center-of-mass energy

H1

Collaboration

•

S. Aid

et al.

- Z.Phys.C 69 (1995) 27-38
•
e-Print:
- hep-ex/9509001
•
DOI:
- 10.1007/s002880050003

Study of photon dissociation in diffractive photoproduction at HERA

ZEUS

Collaboration

•

J. Breitweg
(
- Argonne
)

et al.

- Z.Phys.C 75 (1997) 421-435
•
e-Print:
- hep-ex/9704008
•
DOI:
- 10.1007/s002880050485

The OPAL detector at LEP

OPAL

Collaboration

•

K. Ahmet

et al.

- Nucl.Instrum.Meth.A 305 (1991) 275-319
•
DOI:
- 10.1016/0168-9002(91)90547-4

The OPAL silicon strip microvertex detector with two coordinate readout

OPAL

Collaboration

•

P.P. Allport
(
- Cambridge U.
)

et al.

- Nucl.Instrum.Meth.A 346 (1994) 476-495
•
DOI:
- 10.1016/0168-9002(94)90583-5

The OPAL silicon microvertex detector

OPAL

Collaboration

•

P.P. Allport
(
- Cambridge U.
)

et al.

- Nucl.Instrum.Meth.A 324 (1993) 34-52
•
DOI:
- 10.1016/0168-9002(93)90964-J

The OPAL silicon - tungsten calorimeter front end electronics

OPAL

Collaboration

•

B.E. Anderson

et al.

- IEEE Trans.Nucl.Sci. 41 (1994) 845-852
•
DOI:
- 10.1109/23.322818

A Scenario for high-energy gamma gamma interactions

- Z.Phys.C 73 (1997) 677-688
•
e-Print:
- hep-ph/9605240
•
DOI:
- 10.1007/s002880050359

Dual parton model

A. Capella
(
- Orsay, LPT
)
,
U. Sukhatme
(
- Illinois U., Chicago
)
,
C-I Tan
(
- Brown U.
)
,
J. Tran Thanh Van
(
- Orsay, LPT
)

- Phys.Rept. 236 (1994) 225-329
•
DOI:
- 10.1016/0370-1573(94)90064-7

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

Low and high mass components of the photon distribution functions

- Z.Phys.C 68 (1995) 607-624
•
e-Print:
- hep-ph/9503384
•
DOI:
- 10.1007/BF01565260

Photonic parton distributions

- Phys.Rev.D 46 (1992) 1973-1979
•
DOI:
- 10.1103/PhysRevD.46.1973

Parton structure of the photon beyond the leading order

- Phys.Rev.D 45 (1992) 3986-3994
•
DOI:
- 10.1103/PhysRevD.45.3986

The Detector simulation program for the OPAL experiment at LEP

OPAL

Collaboration

•

J. Allison
(
- Manchester U.
)

et al.

- Nucl.Instrum.Meth.A 317 (1992) 47-74
•
DOI:
- 10.1016/0168-9002(92)90593-S

Two Photon Processes at Very High-Energies

J.A.M. Vermaseren
(
- NIKHEF, Amsterdam
)

- Nucl.Phys.B 229 (1983) 347-371
•
DOI:
- 10.1016/0550-3213(83)90336-X

HERWIG: A Monte Carlo event generator for simulating hadron emission reactions with interfering gluons. Version 5.1 - April 1991

G. Marchesini
(
- Parma U. and
- INFN, Parma
)
,
B.R. Webber
(
- Cambridge U.
)
,
G. Abbiendi
(
- Padua U. and
- INFN, Padua
)
,
I.G. Knowles
(
- Glasgow U.
)
,
M.H. Seymour
(
- Cambridge U.
)

et al.

- Comput.Phys.Commun. 67 (1992) 465-508,
- Comput. Phys. Commun. 67 (1992) 465-508 and Hamburg DESY - DESY 91-048 (91/05,rec.Jul.) 49 p
•
DOI:
- 10.1016/0010-4655(92)90055-4

SVD approach to data unfolding

Andreas Hocker
(
- Orsay, LAL
)
,
Vakhtang Kartvelishvili
(
- Manchester U.
)

- Nucl.Instrum.Meth.A 372 (1996) 469-481
•
e-Print:
- hep-ph/9509307
•
DOI:
- 10.1016/0168-9002(95)01478-0

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