Bounds on contact interactions from LEP1 data and high-Q2 HERA events

M. C. Gonzalez-Garcia; S. F. Novaes

doi:10.1016/S0370-2693(97)00738-7

Bounds on contact interactions from LEP1 data and high-Q² HERA events

M. C. Gonzalez-Garcia
, S. F. Novaes

Institute for Theoretical Physics

Universidade Estadual Paulista Júlio de Mesquita Filho

Research output: Contribution to journal › Article › peer-review

11 Scopus citations

Abstract

A contact four-fermion interaction between light quarks and electrons has been evoked as a possible explanation for the excess of events observed by HERA at high-Q². We explore the 1-loop effects of such interaction in Γ(Z⁰ → e⁺e^-) measured at LEP and impose strong bounds on the lower limit of the effective scale. Our results are able to discard some of the contact interactions as possible explanation for the HERA events.

Original language	English
Pages (from-to)	255-258
Number of pages	4
Journal	Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume	407
Issue number	3-4
DOIs	https://doi.org/10.1016/S0370-2693(97)00738-7
State	Published - Sep 4 1997

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title = "Bounds on contact interactions from LEP1 data and high-Q2 HERA events",

abstract = "A contact four-fermion interaction between light quarks and electrons has been evoked as a possible explanation for the excess of events observed by HERA at high-Q2. We explore the 1-loop effects of such interaction in Γ(Z0 → e+e-) measured at LEP and impose strong bounds on the lower limit of the effective scale. Our results are able to discard some of the contact interactions as possible explanation for the HERA events.",

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AU - Novaes, S. F.

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N2 - A contact four-fermion interaction between light quarks and electrons has been evoked as a possible explanation for the excess of events observed by HERA at high-Q2. We explore the 1-loop effects of such interaction in Γ(Z0 → e+e-) measured at LEP and impose strong bounds on the lower limit of the effective scale. Our results are able to discard some of the contact interactions as possible explanation for the HERA events.

AB - A contact four-fermion interaction between light quarks and electrons has been evoked as a possible explanation for the excess of events observed by HERA at high-Q2. We explore the 1-loop effects of such interaction in Γ(Z0 → e+e-) measured at LEP and impose strong bounds on the lower limit of the effective scale. Our results are able to discard some of the contact interactions as possible explanation for the HERA events.

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DO - 10.1016/S0370-2693(97)00738-7

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SN - 0370-2693

VL - 407

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JO - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

JF - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

IS - 3-4

ER -

Bounds on contact interactions from LEP1 data and high-Q² HERA events

Abstract

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