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Diffractive dijet production : Breakdown of factorization

Kopeliovich, B. Z.; Pasechnik, Roman LU and Potashnikova, I. K. (2018) In Physical Review D 98(11).
Abstract

We analyze the origin of dramatic breakdown of diffractive factorization, observed in single-diffractive (SD) dijet production in hadronic collisions. One of the sources is the application of the results of measurements of the diagonal diffractive deep inelastic scattering to the off-diagonal hadronic diffractive process. The suppression caused by a possibility of inelastic interaction with the spectator partons is calculated at the amplitude level, differently from the usual probabilistic description. It turns out, however, that interaction with the spectator partons not only suppresses the SD cross section, but also gives rise to the main mechanism of SD dijet production, which is another important source of factorization failure. Our... (More)

We analyze the origin of dramatic breakdown of diffractive factorization, observed in single-diffractive (SD) dijet production in hadronic collisions. One of the sources is the application of the results of measurements of the diagonal diffractive deep inelastic scattering to the off-diagonal hadronic diffractive process. The suppression caused by a possibility of inelastic interaction with the spectator partons is calculated at the amplitude level, differently from the usual probabilistic description. It turns out, however, that interaction with the spectator partons not only suppresses the SD cross section, but also gives rise to the main mechanism of SD dijet production, which is another important source of factorization failure. Our parameter-free calculations of SD-to-inclusive cross section ratio, performed in the dipole representation, agrees with the corresponding CDF Tevatron (Run II) data at s=1.96 TeV in the relevant kinematic regions. The energy and hard scale dependences demonstrate a trend, opposite to the factorization-based expectations, similarly to the effect observed earlier in diffractive Abelian radiation.

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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Physical Review D
volume
98
issue
11
publisher
American Physical Society
external identifiers
  • scopus:85059472598
ISSN
2470-0010
DOI
10.1103/PhysRevD.98.114021
language
English
LU publication?
yes
id
6df7dc0c-f283-49a9-9241-cdee51451336
date added to LUP
2019-01-18 11:04:57
date last changed
2019-01-18 11:04:57
@article{6df7dc0c-f283-49a9-9241-cdee51451336,
  abstract     = {<p>We analyze the origin of dramatic breakdown of diffractive factorization, observed in single-diffractive (SD) dijet production in hadronic collisions. One of the sources is the application of the results of measurements of the diagonal diffractive deep inelastic scattering to the off-diagonal hadronic diffractive process. The suppression caused by a possibility of inelastic interaction with the spectator partons is calculated at the amplitude level, differently from the usual probabilistic description. It turns out, however, that interaction with the spectator partons not only suppresses the SD cross section, but also gives rise to the main mechanism of SD dijet production, which is another important source of factorization failure. Our parameter-free calculations of SD-to-inclusive cross section ratio, performed in the dipole representation, agrees with the corresponding CDF Tevatron (Run II) data at s=1.96 TeV in the relevant kinematic regions. The energy and hard scale dependences demonstrate a trend, opposite to the factorization-based expectations, similarly to the effect observed earlier in diffractive Abelian radiation.</p>},
  articleno    = {114021},
  author       = {Kopeliovich, B. Z. and Pasechnik, Roman and Potashnikova, I. K.},
  issn         = {2470-0010},
  language     = {eng},
  month        = {12},
  number       = {11},
  publisher    = {American Physical Society},
  series       = {Physical Review D},
  title        = {Diffractive dijet production : Breakdown of factorization},
  url          = {http://dx.doi.org/10.1103/PhysRevD.98.114021},
  volume       = {98},
  year         = {2018},
}