Distinguishing spins in supersymmetric and universal extra dimension models at the large hadron collider

Smillie, Jennifer M.; Webber, B.R.

doi:10.1088/1126-6708/2005/10/069

Cited by 154 publications

(218 citation statements)

References 14 publications

Supporting

Mentioning

212

Contrasting

Unclassified

Order By: Relevance

“…We derive simple analytical formulae for the correlation coefficients in terms of the masses in the decay chain, which should be of general use whatever the mass spectrum might turn out to be. These extend those already given in [4,10]. We show graphical results for two specific mass scenarios, one considered more probable in SUSY and the other in a UED model.…”

Section: Introductionsupporting

confidence: 80%

“…However, this distribution resolves well between FSFS, FVFS, SFVF and other models. 4 The jet plus lepton distributions (figures 7, 8 and tables 5, 6) are generally more effective than the dileptons in distinguishing between SFSF and FVFV, but the discrimination is strongly dependent on the mass spectrum. As was emphasised in [4], a 'quasi-degenerate' spectrum like II, with large values of the mass ratios x, y and z in eq.…”

Section: Discussionmentioning

confidence: 96%

“…Results for the SFSF and FVFV chains have appeared in the literature before [4,10], but are included here for completeness. Throughout, m 2 represents the relevant m 2 for that subsection.…”

Section: B Analytical Formulae For Invariant Mass Distributionsmentioning

confidence: 99%

See 2 more Smart Citations

Distinguishing spins in decay chains at the large hadron collider

Athanasiou¹,

Lester²,

Smillie³

et al. 2006

J. High Energy Phys.

Self Cite

145

View full text Add to dashboard Cite

If new particles are discovered at the LHC, it will be important to determine their spins in as model-independent a way as possible. We consider the case, commonly encountered in models of physics beyond the Standard Model, of a new scalar or fermion D decaying sequentially into other new particles C, B, A via the decay chain D → Cq, C → Bl near , B → Al far , l near and l far being opposite-sign same-flavour charged leptons and A being invisible. We compute the observable 2-and 3-particle invariant mass distributions for all possible spin assignments of the new particles, and discuss their distinguishability using a quantitative measure known as the Kullback-Leibler distance.

show abstract

Section: Introductionsupporting

confidence: 80%

Section: Discussionmentioning

confidence: 96%

See 1 more Smart Citation

Distinguishing spins in decay chains at the large hadron collider

Athanasiou¹,

Lester²,

Smillie³

et al. 2006

J. High Energy Phys.

Self Cite

145

View full text Add to dashboard Cite

show abstract

“…-the pivotal work on determining spins in cascade decays is Jennie Smillie's PhD thesis [68]. On the same topic there exists a nicely written review by Liantao Wang and Itay Yavin [75].…”

Section: Further Readingmentioning

confidence: 99%

Lectures on LHC Physics

Plehn

2012

Lecture Notes in Physics

View full text Add to dashboard Cite

With the discovery of the Higgs boson the LHC experiments have closed the most important gap in our understanding of fundamental interactions. We now know that the interactions between elementary particles can be described by quantum field theory, more specifically by a renormalizable gauge theory. This theory is valid to arbitrarily high energy scales and do not require an ultraviolet completion. In these notes I cover three aspects to help understand LHC results in the Higgs sector and in searches for physics beyond the Standard Model: many facets of Higgs physics, QCD as it is relevant for LHC measurements, and standard phenomenological background knowledge. The lectures should put young graduate students into a position to really follow advanced writeups and first research papers. In that sense they can serve as a starting point for a research project in LHC physics. With this new, significantly expanded version I am confident that also some more senior colleagues will find them useful and interesting.

show abstract

“…The phenomenology of these particles at the LHC has been studied extensively, see for example refs. [2,[16][17][18][19][20][21]. However, these analyses were based on tree-level predictions for the relevant production cross-sections, which are subject to large uncertainties from QCD radiative corrections.…”

Section: Introductionmentioning

confidence: 99%

QCD corrections to massive color-octet vector boson pair production

Freitas

Wiegand

2017

J. High Energ. Phys.

View full text Add to dashboard Cite

This paper describes the calculation of the next-to-leading order (NLO) QCD corrections to massive color-octet vector boson pair production at hadron colliders. As a concrete framework, a two-site coloron model with an internal parity is chosen, which can be regarded as an effective low-energy approximation of Kaluza-Klein gluon physics in universal extra dimensions. The renormalization procedure involves several subtleties, which are discussed in detail. The impact of the NLO corrections is relatively modest, amounting to a reduction of 11-14% in the total cross-section, but they significantly reduce the scale dependence of the LO result.

show abstract

Distinguishing spins in supersymmetric and universal extra dimension models at the large hadron collider

Cited by 154 publications

References 14 publications

Distinguishing spins in decay chains at the large hadron collider

Distinguishing spins in decay chains at the large hadron collider

Lectures on LHC Physics

QCD corrections to massive color-octet vector boson pair production

Contact Info

Product

Resources

About