Exclusive final states in diffractive excitation
(2012) In Journal of High Energy Physics 2012(12).- Abstract
- In this paper we describe a formalism for generating exclusive final states in diffractive excitation, based on the optical analogy where diffraction is fully determined by the absorption into inelastic channels. The formalism is based on the Good--Walker formalism for diffractive excitation, and it is assumed that the virtual parton cascades represent the diffractive eigenstates defined by a definite absorption amplitude. We emphasize that, although diffractive excitation is basically a quantum-mechanical phenomenon with strong interference effects, it is possible to calculate the different interfering components to the amplitude in an event generator, add them and thus calculate the reaction cross section for exclusive diffractive final... (More)
- In this paper we describe a formalism for generating exclusive final states in diffractive excitation, based on the optical analogy where diffraction is fully determined by the absorption into inelastic channels. The formalism is based on the Good--Walker formalism for diffractive excitation, and it is assumed that the virtual parton cascades represent the diffractive eigenstates defined by a definite absorption amplitude. We emphasize that, although diffractive excitation is basically a quantum-mechanical phenomenon with strong interference effects, it is possible to calculate the different interfering components to the amplitude in an event generator, add them and thus calculate the reaction cross section for exclusive diffractive final states. The formalism is implemented in the DIPSY event generator, introducing no tunable parameters beyond what has been determined previously in studies of non-diffractive events. Some early results from DIS and proton-proton collisions are presented, and compared to experimental data. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/3168655
- author
- Flensburg, Christoffer LU ; Gustafson, Gösta LU and Lönnblad, Leif LU
- organization
- publishing date
- 2012
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- Diffraction, Small-x physics, Saturation, Dipole Model, DIS
- in
- Journal of High Energy Physics
- volume
- 2012
- issue
- 12
- article number
- 115
- publisher
- Springer
- external identifiers
-
- wos:000313124000050
- scopus:84878502161
- ISSN
- 1029-8479
- DOI
- 10.1007/JHEP12(2012)115
- language
- English
- LU publication?
- yes
- id
- 3da42839-c3ac-4c9c-9f3e-45afaf3a456b (old id 3168655)
- alternative location
- http://arxiv.org/pdf/1210.2407.pdf
- date added to LUP
- 2016-04-04 13:36:19
- date last changed
- 2024-01-13 08:27:22
@article{3da42839-c3ac-4c9c-9f3e-45afaf3a456b, abstract = {{In this paper we describe a formalism for generating exclusive final states in diffractive excitation, based on the optical analogy where diffraction is fully determined by the absorption into inelastic channels. The formalism is based on the Good--Walker formalism for diffractive excitation, and it is assumed that the virtual parton cascades represent the diffractive eigenstates defined by a definite absorption amplitude. We emphasize that, although diffractive excitation is basically a quantum-mechanical phenomenon with strong interference effects, it is possible to calculate the different interfering components to the amplitude in an event generator, add them and thus calculate the reaction cross section for exclusive diffractive final states. The formalism is implemented in the DIPSY event generator, introducing no tunable parameters beyond what has been determined previously in studies of non-diffractive events. Some early results from DIS and proton-proton collisions are presented, and compared to experimental data.}}, author = {{Flensburg, Christoffer and Gustafson, Gösta and Lönnblad, Leif}}, issn = {{1029-8479}}, keywords = {{Diffraction; Small-x physics; Saturation; Dipole Model; DIS}}, language = {{eng}}, number = {{12}}, publisher = {{Springer}}, series = {{Journal of High Energy Physics}}, title = {{Exclusive final states in diffractive excitation}}, url = {{http://dx.doi.org/10.1007/JHEP12(2012)115}}, doi = {{10.1007/JHEP12(2012)115}}, volume = {{2012}}, year = {{2012}}, }