Quark contact interactions at the LHC

Quark contact interactions are an important signal of new physics. We introduce a model in which the presence of a symmetry protects these new interactions from giving large corrections in flavor changing processes at low energies. This minimal model provides the basic set of operators which must be...

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Bibliographic Details
Published in:Physical review. D, Particles, fields, gravitation, and cosmology Particles, fields, gravitation, and cosmology, 2012-06, Vol.85 (11), Article 114001
Main Authors: Bazzocchi, F., De Sanctis, U., Fabbrichesi, M., Tonero, A.
Format: Article
Language:English
Subjects:
Contact
Cosmology
Flavours
Gravitation
Lead (metal)
Luminosity
Operators
Quarks
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Summary:Quark contact interactions are an important signal of new physics. We introduce a model in which the presence of a symmetry protects these new interactions from giving large corrections in flavor changing processes at low energies. This minimal model provides the basic set of operators which must be considered to contribute to the high-energy processes. To discuss their experimental signature in jet pairs produced in proton-proton collisions, we simplify the number of possible operators down to two. We show (for a representative integrated luminosity of 200 pb super(-1) at [radical]s = 7 TeV) how the presence of two operators significantly modifies the bound on the characteristic energy scale of the contact interactions, which is obtained by keeping a single operator.
ISSN:1550-7998
1550-2368
DOI:10.1103/PhysRevD.85.114001