A scenario for high-energy γγ interactions
Schuler, Gerhard A. and Sjöstrand, Torbjörn LU
(1997)
In Zeitschrift für Physik C Particles and Fields
73(4).
p.677-688
- Abstract
A real photon has a complicated nature, whereby it may remain unresolved or fluctuate into a vector meson or a perturbative qq̄ pair. In γγ events, this gives three by three combinations of the nature of the two incoming photons, and thus six distinct event classes. The properties of these classes are partly constrained by the choices already made in our related γp model. It is therefore possible to predict the energy-dependence of the cross section for each of the six components separately. The total cross section gives support to the idea that a simple factorized ansatz with a pomeron and a reggeon term can be a good approximation. Event properties undergo a stepwise evolution from pp to γp to γγ events, with larger charged... (More)
A real photon has a complicated nature, whereby it may remain unresolved or fluctuate into a vector meson or a perturbative qq̄ pair. In γγ events, this gives three by three combinations of the nature of the two incoming photons, and thus six distinct event classes. The properties of these classes are partly constrained by the choices already made in our related γp model. It is therefore possible to predict the energy-dependence of the cross section for each of the six components separately. The total cross section gives support to the idea that a simple factorized ansatz with a pomeron and a reggeon term can be a good approximation. Event properties undergo a stepwise evolution from pp to γp to γγ events, with larger charged multiplicity, more transverse energy flow and a higher jet rate in the latter process.
(Less)
- author
- Schuler, Gerhard A.
and Sjöstrand, Torbjörn
LU
- organization
- publishing date
- 1997-12
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Zeitschrift für Physik C Particles and Fields
- volume
- 73
- issue
- 4
- pages
- 12 pages
- publisher
- Springer
- external identifiers
-
- scopus:0001410630
- ISSN
- 0170-9739
- DOI
- 10.1007/s002880050359
- language
- English
- LU publication?
- yes
- id
- 2438351f-a9ee-46f1-89f3-64bdd66a65b1
- date added to LUP
- 2019-04-29 23:28:23
- date last changed
- 2024-04-02 00:33:27
@article{2438351f-a9ee-46f1-89f3-64bdd66a65b1,
abstract = {{<p>A real photon has a complicated nature, whereby it may remain unresolved or fluctuate into a vector meson or a perturbative qq̄ pair. In γγ events, this gives three by three combinations of the nature of the two incoming photons, and thus six distinct event classes. The properties of these classes are partly constrained by the choices already made in our related γp model. It is therefore possible to predict the energy-dependence of the cross section for each of the six components separately. The total cross section gives support to the idea that a simple factorized ansatz with a pomeron and a reggeon term can be a good approximation. Event properties undergo a stepwise evolution from pp to γp to γγ events, with larger charged multiplicity, more transverse energy flow and a higher jet rate in the latter process.</p>}},
author = {{Schuler, Gerhard A. and Sjöstrand, Torbjörn}},
issn = {{0170-9739}},
language = {{eng}},
number = {{4}},
pages = {{677--688}},
publisher = {{Springer}},
series = {{Zeitschrift für Physik C Particles and Fields}},
title = {{A scenario for high-energy γγ interactions}},
url = {{http://dx.doi.org/10.1007/s002880050359}},
doi = {{10.1007/s002880050359}},
volume = {{73}},
year = {{1997}},
}