Dominant decays of scalar leptoquarks and scalar gluons in the minimal four-color symmetry model

Povarov, A. V.; Popov, P. Yu.; Smirnov, A. D.

doi:10.1134/s1063778807040163

Cited by 8 publications

(9 citation statements)

References 12 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In adjoint SU(5) GUT's, color octet scalars are actually required to be light ( < ∼ 100 TeV) in order to obtain unified couplings [5,6]. Color octet scalars can also arise in theories of Pati-Salam unification [7,8] as well as cosmological models of dark energy [9].…”

mentioning

confidence: 99%

Color octet scalar bound states at the LHC

Kim

Mehen

2009

Phys. Rev. D

View full text Add to dashboard Cite

One possible extension of the Standard Model scalar sector includes SU (2) L doublet scalars that are color octets rather than singlets. We focus on models in which the couplings to fermions are consistent with the principle of minimal flavor violation (MFV), in which case these color octet scalars couple most strongly to the third generation of quarks. When the Yukawa coupling of color octet scalars to Standard Model fermions is less than unity, these states can live long enough to bind into color-singlet spin-0 hadrons, which we call octetonia. In this paper, we consider the phenomenology of octetonia at the Large Hadron Collider (LHC). Predictions for their production via gluon-gluon fusion and their two-body decays into Standard Model gauge bosons, Higgs bosons, andtt are presented.

show abstract

mentioning

confidence: 99%

Color octet scalar bound states at the LHC

Kim

Mehen

2009

Phys. Rev. D

View full text Add to dashboard Cite

show abstract

“…Obviously, properly incorporating these effects will be important for other heavy particles predicted in theories of New Physics (NP) that may be observed at the LHC. In this paper we will focus on the production of a heavy color-octet scalar, which appears in a number of NP models such as grand unified theories [7,8,9], supersymmetric theories [10,11], Pati-Salam unification [12,13], chiral color [14], and topcolor [15]. We will calculate the cross section for the Manohar-Wise model [16] of color-octet scalars which is consistent with the principle of Minimal Flavor Violation (MFV) [17,18].…”

mentioning

confidence: 99%

Factorization and resummation for single color-octet scalar production at the LHC

2009

View full text Add to dashboard Cite

Heavy colored scalar particles appear in a variety of new physics (NP) models and could be produced at the Large Hadron Collider (LHC). Knowing the total production cross section is important for searching for these states and establishing bounds on their masses and couplings. Using soft-collinear effective theory, we derive a factorization theorem for the process pp → SX, where S is a color-octet scalar, that is applicable to any NP model provided the dominant production mechanism is gluon-gluon fusion. The factorized result for the inclusive cross section is similar to that for the Standard Model Higgs production, however, differences arise due to color exchange between initial and final states. We provide formulae for the total cross section with large (partonic) threshold logarithms resummed to next-to-leading logarithm (NLL) accuracy. The resulting K-factors are similar to those found in Higgs production. We apply our formalism to the Manohar-Wise model and find that the NLL cross section is roughly 2 times (3 times) as large as the leading order cross section for a color-octet scalar of mass of 500 GeV (3 TeV). A similar enhancement should appear in any NP model with color-octet scalars.

show abstract

“…In the unitary gauge, this imaginary part is not excluded by a gauge transformation. It should also be noted that scalar octets of different origin were predicted within other models [72][73][74][75][76][77][78]. Since scalar octets are color objects, they may be produced in pp collisions.…”

Section: Content Of the Scalar Sector In The Model Involving Chiral Cmentioning

confidence: 94%

Chiral color quark symmetry and possible constraints on the G′-boson mass from tevatron and LHC data

Martynov

Smirnov

2012

Phys. Atom. Nuclei

Self Cite

View full text Add to dashboard Cite

Dominant decays of scalar leptoquarks and scalar gluons in the minimal four-color symmetry model

Cited by 8 publications

References 12 publications

Color octet scalar bound states at the LHC

Color octet scalar bound states at the LHC

Factorization and resummation for single color-octet scalar production at the LHC

Chiral color quark symmetry and possible constraints on the G′-boson mass from tevatron and LHC data

Contact Info

Product

Resources

About