Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2009-03-21
Phys.Rev.D79:114016,2009
Physics
High Energy Physics
High Energy Physics - Phenomenology
17 pages, 5 figures; SCET operator basis fixed and References added
Scientific paper
10.1103/PhysRevD.79.114016
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 $pp\to SX$, 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.
Idilbi Ahmad
Kim Chul
Mehen Thomas
No associations
LandOfFree
Factorization and resummation for single color-octet scalar production at the LHC does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Factorization and resummation for single color-octet scalar production at the LHC, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Factorization and resummation for single color-octet scalar production at the LHC will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-636688