LHC signals for coset electroweak gauge bosons in warped/composite pseudo-Goldstone boson Higgs models

Journal Article · Sat May 01 00:00:00 EDT 2010 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PHYSREVD.81.096002· OSTI ID:21409986

Agashe, Kaustubh; Azatov, Aleksandr; Lijun, Zhu ^[1]; Tao, Han; Yingchuan, Li ^[2]; Zongguo, Si ^[3]

---

1. Maryland Center for Fundamental Physics, Department of Physics, University of Maryland, College Park, Maryland 20742 (United States)
2. Department of Physics, University of Wisconsin, Madison, Wisconsin 53706 (United States)
3. Department of Physics, Shandong University, Jinan Shandong 250100 (China)

The framework of a warped extra dimension with the standard model (SM) fields propagating in it is a very well-motivated extension of the SM since it can address both the Planck-weak and flavor hierarchy problems of the SM. Within this framework, solution to the little hierarchy problem motivates extending the SM electroweak (EW) 5D gauge symmetry in such a way that its breakdown to the SM delivers the SM Higgs boson. We study signals at the large hadron collider (LHC) for the extra EW (called coset) gauge bosons, a fundamental ingredient of this framework. The coset gauge bosons, due to their unique EW gauge quantum numbers [doublets of SU(2){sub L}], do not couple at leading order to two SM particles. We find that, using the associated production of the charged coset gauge bosons via their coupling to bottom quark and a (light) Kaluza-Klein excitation of the top quark, the LHC can have a 3{sigma} reach of {approx}2(2.6) TeV for the coset gauge boson masses with {approx}100(1000) fb{sup -1} luminosity. Since current theoretical framework(s) suggest an indirect lower limit on coset gauge boson masses of > or approx. 3 TeV, luminosity or energy upgrade of LHC is likely to be crucial in observing these states.

• OSTI ID: 21409986
• Journal Information: Physical Review. D, Particles Fields, Vol. 81, Issue 9; Other Information: DOI: 10.1103/PhysRevD.81.096002; (c) 2010 The American Physical Society; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
B QUARKS
BREAKDOWN
CERN LHC
COUPLING
EXCITATION
FLAVOR MODEL
GAUGE INVARIANCE
GOLDSTONE BOSONS
HIGGS BOSONS
HIGGS MODEL
KALUZA-KLEIN THEORY
LUMINOSITY
MANY-DIMENSIONAL CALCULATIONS
MASS
QUANTUM NUMBERS
STANDARD MODEL
SU-2 GROUPS
T QUARKS
TEV RANGE 01-10
ACCELERATORS
BEAUTY PARTICLES
BOSONS
COMPOSITE MODELS
CYCLIC ACCELERATORS
ELEMENTARY PARTICLES
ENERGY RANGE
ENERGY-LEVEL TRANSITIONS
FERMIONS
FIELD THEORIES
GRAND UNIFIED THEORY
INVARIANCE PRINCIPLES
LIE GROUPS
MATHEMATICAL MODELS
OPTICAL PROPERTIES
PARTICLE MODELS
PHYSICAL PROPERTIES
POSTULATED PARTICLES
QUANTUM FIELD THEORY
QUARK MODEL
QUARKS
STORAGE RINGS
SU GROUPS
SYMMETRY GROUPS
SYNCHROTRONS
TEV RANGE
TOP PARTICLES
UNIFIED GAUGE MODELS
UNIFIED-FIELD THEORIES