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Diffractive Higgsstrahlung

Pasechnik, Roman LU ; Kopeliovich, Boris and Potashnikova, Irina (2015) In Physical Review D (Particles, Fields, Gravitation and Cosmology) 92(9).
Abstract
We consider single-diffractive (SD) Higgs production in association with heavy flavor in proton-proton collisions at the LHC. The main focus of our study is a reliable estimate of SD/inclusive ratio, not a precision computation of the cross sections. The calculations are performed within the framework of the phenomenological dipole approach, which includes by default the absorptive corrections, i.e., the gap survival effects at the amplitude level. The dominant mechanism is the diffractive production of heavy quarks, which radiate a Higgs boson (Higgsstrahlung). Although diffractive production of t-quarks is grossly suppressed as 1/m(t)(2), the large Higgs-top coupling compensates this smallness and the Higgsstrahlung by t-quarks becomes... (More)
We consider single-diffractive (SD) Higgs production in association with heavy flavor in proton-proton collisions at the LHC. The main focus of our study is a reliable estimate of SD/inclusive ratio, not a precision computation of the cross sections. The calculations are performed within the framework of the phenomenological dipole approach, which includes by default the absorptive corrections, i.e., the gap survival effects at the amplitude level. The dominant mechanism is the diffractive production of heavy quarks, which radiate a Higgs boson (Higgsstrahlung). Although diffractive production of t-quarks is grossly suppressed as 1/m(t)(2), the large Higgs-top coupling compensates this smallness and the Higgsstrahlung by t-quarks becomes the dominant contribution at large Higgs boson transverse momenta. We computed the basic observables such as the transverse momentum and rapidity distributions of the diffractively produced Higgs boson in association with the bottom and top quark pair. Finally, we discuss a potential relevance of the diffractive Higgsstrahlung in comparison to the Higgsstrahlung off intrinsic heavy flavor at forward Higgs boson rapidities. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Physical Review D (Particles, Fields, Gravitation and Cosmology)
volume
92
issue
9
publisher
American Physical Society
external identifiers
  • wos:000364411300004
  • scopus:84947125177
ISSN
1550-2368
DOI
10.1103/PhysRevD.92.094014
language
English
LU publication?
yes
id
a96dfe49-532c-4754-86ad-0dbcd7b06e25 (old id 8377573)
date added to LUP
2015-12-18 13:06:31
date last changed
2017-01-01 03:52:19
@article{a96dfe49-532c-4754-86ad-0dbcd7b06e25,
  abstract     = {We consider single-diffractive (SD) Higgs production in association with heavy flavor in proton-proton collisions at the LHC. The main focus of our study is a reliable estimate of SD/inclusive ratio, not a precision computation of the cross sections. The calculations are performed within the framework of the phenomenological dipole approach, which includes by default the absorptive corrections, i.e., the gap survival effects at the amplitude level. The dominant mechanism is the diffractive production of heavy quarks, which radiate a Higgs boson (Higgsstrahlung). Although diffractive production of t-quarks is grossly suppressed as 1/m(t)(2), the large Higgs-top coupling compensates this smallness and the Higgsstrahlung by t-quarks becomes the dominant contribution at large Higgs boson transverse momenta. We computed the basic observables such as the transverse momentum and rapidity distributions of the diffractively produced Higgs boson in association with the bottom and top quark pair. Finally, we discuss a potential relevance of the diffractive Higgsstrahlung in comparison to the Higgsstrahlung off intrinsic heavy flavor at forward Higgs boson rapidities.},
  articleno    = {094014},
  author       = {Pasechnik, Roman and Kopeliovich, Boris and Potashnikova, Irina},
  issn         = {1550-2368},
  language     = {eng},
  number       = {9},
  publisher    = {American Physical Society},
  series       = {Physical Review D (Particles, Fields, Gravitation and Cosmology)},
  title        = {Diffractive Higgsstrahlung},
  url          = {http://dx.doi.org/10.1103/PhysRevD.92.094014},
  volume       = {92},
  year         = {2015},
}