Pair production of color-octet scalars at the LHC

Journal Article · Fri Oct 01 00:00:00 EDT 2010 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PHYSREVD.82.075017· OSTI ID:21432327

Idilbi, Ahmad ^[1]; Kim, Chul ^[1]; Mehen, Thomas ^[1]

---

1. Department of Physics, Duke University, Durham, North Carolina 27708 (United States)

Heavy colored scalar particles, which exist in many models of new physics, can be pair produced at the LHC via gluon-gluon fusion and possibly form quarkoniumlike bound states. If the scalars are also charged under the electroweak gauge group, these bound states can then decay into electroweak bosons. This yields a resonant cross section for final states such as {gamma}{gamma} that can exceed standard model backgrounds. This paper studies this process in the Manohar-Wise model of color-octet scalars (COS). Important threshold logarithms and final state Coulomb-like QCD interactions are resummed using effective field theory. We compute the resummed cross section for gluon-gluon fusion to COS pairs at the LHC as well as the resonant cross section for octetonium decaying to {gamma}{gamma}. The latter cross section exceeds the standard model diphoton cross section when the COS mass is less than 500 (350) GeV for {radical}(s)=14(7) TeV. Nonobservation of resonances below these energies can significantly improve existing bounds on COS masses.

• OSTI ID: 21432327
• Journal Information: Physical Review. D, Particles Fields, Vol. 82, Issue 7; Other Information: DOI: 10.1103/PhysRevD.82.075017; (c) 2010 American Institute of Physics; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
BOSONS
BOUND STATE
CERN LHC
COLOR MODEL
CROSS SECTIONS
DECAY
GEV RANGE 100-1000
GLUON-GLUON INTERACTIONS
MASS
PAIR PRODUCTION
PARTICLES
QUANTUM CHROMODYNAMICS
RESONANCE
STANDARD MODEL
TEV RANGE
ACCELERATORS
COMPOSITE MODELS
CYCLIC ACCELERATORS
ENERGY RANGE
FIELD THEORIES
GEV RANGE
GRAND UNIFIED THEORY
INTERACTIONS
MATHEMATICAL MODELS
PARTICLE INTERACTIONS
PARTICLE MODELS
PARTICLE PRODUCTION
QUANTUM FIELD THEORY
QUARK MODEL
STORAGE RINGS
SYNCHROTRONS
UNIFIED GAUGE MODELS