Production of tt/mml:mover> pairs via fusion with photon transverse momenta and proton dissociation

Marta Łuszczak, Laurent Forthomme, Wolfgang Schäfer, Antoni Szczurek

Forskningsoutput: TidskriftsbidragArtikelVetenskapligPeer review

Sammanfattning

We discuss the production of t t quark- antiquark pairs in proton- proton collisions via the fusion mechanism. We include topologies in which both protons stay intact or one or even both of them undergo dissociation. The calculations are performed within the k T - factorisation approach, including transverse momenta of intermediate photons. Photon uxes associated with inelastic ( dissociative) processes are calculated based on modern parameterisations of proton structure functions. We fi nd an integrated cross section of about 2.36 fb at p s = 13 TeV for all contributions ( without requirement of rapidity gap). The cross section for the fully elastic process is the smallest. Inelastic contributions are signi fi cantly reduced when a veto on outgoing jets is imposed. We present several di ff erential distributions in rapidity and transverse momenta of single t or t quarks/ antiquarks as well as distributions in invariant mass of both the t t and masses of dissociated systems. A few two- dimensional distributions are presented in addition.

Originalspråkengelska
Artikelnummer100
TidskriftJournal of High Energy Physics
Volym2019
Utgåva2
Antal sidor14
ISSN1029-8479
DOI
StatusPublicerad - 15 feb 2019
MoE-publikationstypA1 Tidskriftsartikel-refererad

Bibliografisk information

12 pages, 11 figures

Vetenskapsgrenar

  • 114 Fysik

Citera det här

@article{fdd5401a961b4817b1f3308804c6fff3,
title = "Production of tt/mml:mover> pairs via fusion with photon transverse momenta and proton dissociation",
abstract = "We discuss the production of t t quark- antiquark pairs in proton- proton collisions via the fusion mechanism. We include topologies in which both protons stay intact or one or even both of them undergo dissociation. The calculations are performed within the k T - factorisation approach, including transverse momenta of intermediate photons. Photon uxes associated with inelastic ( dissociative) processes are calculated based on modern parameterisations of proton structure functions. We fi nd an integrated cross section of about 2.36 fb at p s = 13 TeV for all contributions ( without requirement of rapidity gap). The cross section for the fully elastic process is the smallest. Inelastic contributions are signi fi cantly reduced when a veto on outgoing jets is imposed. We present several di ff erential distributions in rapidity and transverse momenta of single t or t quarks/ antiquarks as well as distributions in invariant mass of both the t t and masses of dissociated systems. A few two- dimensional distributions are presented in addition.",
keywords = "114 Physical sciences, hep-ph, GAMMA, Phenomenological Models, QCD Phenomenology",
author = "Marta Łuszczak and Laurent Forthomme and Wolfgang Sch{\"a}fer and Antoni Szczurek",
note = "12 pages, 11 figures",
year = "2019",
month = "2",
day = "15",
doi = "10.1007/JHEP02(2019)100",
language = "English",
volume = "2019",
journal = "Journal of High Energy Physics",
issn = "1029-8479",
publisher = "Springer",
number = "2",

}

Production of tt/mml:mover> pairs via fusion with photon transverse momenta and proton dissociation. / Łuszczak, Marta; Forthomme, Laurent; Schäfer, Wolfgang; Szczurek, Antoni.

I: Journal of High Energy Physics, Vol. 2019, Nr. 2, 100, 15.02.2019.

Forskningsoutput: TidskriftsbidragArtikelVetenskapligPeer review

TY - JOUR

T1 - Production of tt/mml:mover> pairs via fusion with photon transverse momenta and proton dissociation

AU - Łuszczak, Marta

AU - Forthomme, Laurent

AU - Schäfer, Wolfgang

AU - Szczurek, Antoni

N1 - 12 pages, 11 figures

PY - 2019/2/15

Y1 - 2019/2/15

N2 - We discuss the production of t t quark- antiquark pairs in proton- proton collisions via the fusion mechanism. We include topologies in which both protons stay intact or one or even both of them undergo dissociation. The calculations are performed within the k T - factorisation approach, including transverse momenta of intermediate photons. Photon uxes associated with inelastic ( dissociative) processes are calculated based on modern parameterisations of proton structure functions. We fi nd an integrated cross section of about 2.36 fb at p s = 13 TeV for all contributions ( without requirement of rapidity gap). The cross section for the fully elastic process is the smallest. Inelastic contributions are signi fi cantly reduced when a veto on outgoing jets is imposed. We present several di ff erential distributions in rapidity and transverse momenta of single t or t quarks/ antiquarks as well as distributions in invariant mass of both the t t and masses of dissociated systems. A few two- dimensional distributions are presented in addition.

AB - We discuss the production of t t quark- antiquark pairs in proton- proton collisions via the fusion mechanism. We include topologies in which both protons stay intact or one or even both of them undergo dissociation. The calculations are performed within the k T - factorisation approach, including transverse momenta of intermediate photons. Photon uxes associated with inelastic ( dissociative) processes are calculated based on modern parameterisations of proton structure functions. We fi nd an integrated cross section of about 2.36 fb at p s = 13 TeV for all contributions ( without requirement of rapidity gap). The cross section for the fully elastic process is the smallest. Inelastic contributions are signi fi cantly reduced when a veto on outgoing jets is imposed. We present several di ff erential distributions in rapidity and transverse momenta of single t or t quarks/ antiquarks as well as distributions in invariant mass of both the t t and masses of dissociated systems. A few two- dimensional distributions are presented in addition.

KW - 114 Physical sciences

KW - hep-ph

KW - GAMMA

KW - Phenomenological Models

KW - QCD Phenomenology

U2 - 10.1007/JHEP02(2019)100

DO - 10.1007/JHEP02(2019)100

M3 - Article

VL - 2019

JO - Journal of High Energy Physics

JF - Journal of High Energy Physics

SN - 1029-8479

IS - 2

M1 - 100

ER -