Model-independent production of a top-philic resonance at the LHC

Nicolas Greiner, Kyoungchul Kong, Jong Chul Park, Seong Chan Park, Jan Christopher Winter

Research output: Contribution to journalArticle

14 Citations (Scopus)

Abstract

Abstract: We investigate the collider phenomenology of a color-singlet vector resonance, which couples to the heaviest quarks, the top quarks, but very weakly to the rest of the fermions in the Standard Model. We find that the dominant production of such a resonance does not appear at the tree level — it rather occurs at the one-loop level in association with an extra jet. Signatures like tt¯$$ t\overline{t} $$ plus jets readily emerge as a result of the subsequent decay of the resonance into a pair of top quarks. Without the additional jet, the resonance can still be produced off-shell, which gives a sizeable contribution at low masses. The lower top quark multiplicity of the loop induced resonance production facilitates its reconstruction as compared to the tree level production that gives rise to more exotic signatures involving three or even four top quarks in the final state. For all these cases, we discuss the constraints on the resonance production stemming from recent experimental measurements in the top quark sector. We find that the top-philic vector resonance remains largely unconstrained for the majority of the parameter space, although this will be scrutinized closely in the Run 2 phase of the LHC.

Original languageEnglish
Article number29
JournalJournal of High Energy Physics
Volume2015
Issue number4
DOIs
Publication statusPublished - 2015 Apr 1

Fingerprint

quarks
signatures
phenomenology
sectors
fermions
color
decay

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics

Cite this

Greiner, Nicolas ; Kong, Kyoungchul ; Park, Jong Chul ; Park, Seong Chan ; Winter, Jan Christopher. / Model-independent production of a top-philic resonance at the LHC. In: Journal of High Energy Physics. 2015 ; Vol. 2015, No. 4.
@article{6d7ea140b0844f81a8b287865239c1aa,
title = "Model-independent production of a top-philic resonance at the LHC",
abstract = "Abstract: We investigate the collider phenomenology of a color-singlet vector resonance, which couples to the heaviest quarks, the top quarks, but very weakly to the rest of the fermions in the Standard Model. We find that the dominant production of such a resonance does not appear at the tree level — it rather occurs at the one-loop level in association with an extra jet. Signatures like tt¯$$ t\overline{t} $$ plus jets readily emerge as a result of the subsequent decay of the resonance into a pair of top quarks. Without the additional jet, the resonance can still be produced off-shell, which gives a sizeable contribution at low masses. The lower top quark multiplicity of the loop induced resonance production facilitates its reconstruction as compared to the tree level production that gives rise to more exotic signatures involving three or even four top quarks in the final state. For all these cases, we discuss the constraints on the resonance production stemming from recent experimental measurements in the top quark sector. We find that the top-philic vector resonance remains largely unconstrained for the majority of the parameter space, although this will be scrutinized closely in the Run 2 phase of the LHC.",
author = "Nicolas Greiner and Kyoungchul Kong and Park, {Jong Chul} and Park, {Seong Chan} and Winter, {Jan Christopher}",
year = "2015",
month = "4",
day = "1",
doi = "10.1007/JHEP04(2015)029",
language = "English",
volume = "2015",
journal = "Journal of High Energy Physics",
issn = "1126-6708",
publisher = "Springer Verlag",
number = "4",

}

Model-independent production of a top-philic resonance at the LHC. / Greiner, Nicolas; Kong, Kyoungchul; Park, Jong Chul; Park, Seong Chan; Winter, Jan Christopher.

In: Journal of High Energy Physics, Vol. 2015, No. 4, 29, 01.04.2015.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Model-independent production of a top-philic resonance at the LHC

AU - Greiner, Nicolas

AU - Kong, Kyoungchul

AU - Park, Jong Chul

AU - Park, Seong Chan

AU - Winter, Jan Christopher

PY - 2015/4/1

Y1 - 2015/4/1

N2 - Abstract: We investigate the collider phenomenology of a color-singlet vector resonance, which couples to the heaviest quarks, the top quarks, but very weakly to the rest of the fermions in the Standard Model. We find that the dominant production of such a resonance does not appear at the tree level — it rather occurs at the one-loop level in association with an extra jet. Signatures like tt¯$$ t\overline{t} $$ plus jets readily emerge as a result of the subsequent decay of the resonance into a pair of top quarks. Without the additional jet, the resonance can still be produced off-shell, which gives a sizeable contribution at low masses. The lower top quark multiplicity of the loop induced resonance production facilitates its reconstruction as compared to the tree level production that gives rise to more exotic signatures involving three or even four top quarks in the final state. For all these cases, we discuss the constraints on the resonance production stemming from recent experimental measurements in the top quark sector. We find that the top-philic vector resonance remains largely unconstrained for the majority of the parameter space, although this will be scrutinized closely in the Run 2 phase of the LHC.

AB - Abstract: We investigate the collider phenomenology of a color-singlet vector resonance, which couples to the heaviest quarks, the top quarks, but very weakly to the rest of the fermions in the Standard Model. We find that the dominant production of such a resonance does not appear at the tree level — it rather occurs at the one-loop level in association with an extra jet. Signatures like tt¯$$ t\overline{t} $$ plus jets readily emerge as a result of the subsequent decay of the resonance into a pair of top quarks. Without the additional jet, the resonance can still be produced off-shell, which gives a sizeable contribution at low masses. The lower top quark multiplicity of the loop induced resonance production facilitates its reconstruction as compared to the tree level production that gives rise to more exotic signatures involving three or even four top quarks in the final state. For all these cases, we discuss the constraints on the resonance production stemming from recent experimental measurements in the top quark sector. We find that the top-philic vector resonance remains largely unconstrained for the majority of the parameter space, although this will be scrutinized closely in the Run 2 phase of the LHC.

UR - http://www.scopus.com/inward/record.url?scp=84927613609&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84927613609&partnerID=8YFLogxK

U2 - 10.1007/JHEP04(2015)029

DO - 10.1007/JHEP04(2015)029

M3 - Article

AN - SCOPUS:84927613609

VL - 2015

JO - Journal of High Energy Physics

JF - Journal of High Energy Physics

SN - 1126-6708

IS - 4

M1 - 29

ER -