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A first study of Hidden Valley models at the LHC

Svensson Seth, Morgan LU (2011) FYTK01 20111
Theoretical Particle Physics
Department of Astronomy and Theoretical Physics
Abstract
New stable particles with fairly low masses could exist if the coupling to the Standard Model is weak, and with suitable parameters they might be possible to produce at the LHC. Here we study a selection of models with the new particles being charged under a new gauge group, either U(1) or SU(N). In the Abelian case there will be radiation of gammavs, which decay back into the SM. In the non-Abelian case the particles will undergo hadronization into mesons like states piv/rhov that subsequently decays. We consider three different scenarios for interaction between the new sector and the SM sector and perform simulations using a Hidden Valley model previously implemented in PYTHIA. In this study we illustrate how one can distinguish the... (More)
New stable particles with fairly low masses could exist if the coupling to the Standard Model is weak, and with suitable parameters they might be possible to produce at the LHC. Here we study a selection of models with the new particles being charged under a new gauge group, either U(1) or SU(N). In the Abelian case there will be radiation of gammavs, which decay back into the SM. In the non-Abelian case the particles will undergo hadronization into mesons like states piv/rhov that subsequently decays. We consider three different scenarios for interaction between the new sector and the SM sector and perform simulations using a Hidden Valley model previously implemented in PYTHIA. In this study we illustrate how one can distinguish the different models and measure different parameters of the models under conditions like those at the LHC. (Less)
Please use this url to cite or link to this publication:
author
Svensson Seth, Morgan LU
supervisor
organization
course
FYTK01 20111
year
type
M2 - Bachelor Degree
subject
keywords
physics, theoretical physics, particle physics, phenomenology, beyond standard model, hidden valley, secluded sector, LHC
language
English
id
3458658
alternative location
http://arxiv.org/abs/1106.2064
date added to LUP
2013-02-06 21:29:50
date last changed
2013-02-06 21:29:50
@misc{3458658,
  abstract     = {New stable particles with fairly low masses could exist if the coupling to the Standard Model is weak, and with suitable parameters they might be possible to produce at the LHC. Here we study a selection of models with the new particles being charged under a new gauge group, either U(1) or SU(N). In the Abelian case there will be radiation of gammavs, which decay back into the SM. In the non-Abelian case the particles will undergo hadronization into mesons like states piv/rhov that subsequently decays. We consider three different scenarios for interaction between the new sector and the SM sector and perform simulations using a Hidden Valley model previously implemented in PYTHIA. In this study we illustrate how one can distinguish the different models and measure different parameters of the models under conditions like those at the LHC.},
  author       = {Svensson Seth, Morgan},
  keyword      = {physics,theoretical physics,particle physics,phenomenology,beyond standard model,hidden valley,secluded sector,LHC},
  language     = {eng},
  note         = {Student Paper},
  title        = {A first study of Hidden Valley models at the LHC},
  year         = {2011},
}