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SCALE LIMITS for Contact Interactions: $\Lambda\mathrm {({{\mathit \ell}} {{\mathit \ell}} {{\mathit \ell}} {{\mathit \ell}})}$ INSPIRE search

Lepton universality assumed. Limits are for $\Lambda_{LL}^{\pm}$ only. For other cases, see each reference.

S054CTL

$\Lambda_{LL}^+({\mathrm {TeV}}$)

$\Lambda_{LL}^-({\mathrm {TeV}}$)

CL%

DOCUMENT ID

TECN

COMMENT

$ > 7.9 $

$\mathbf {> 10.3}$

95

ALEP

$\mathit E_{{\mathrm {cm}}}$= $189 - 209$ GeV

$ \mathbf {>9.1} $

>8.2

95

DLPH

$\mathit E_{{\mathrm {cm}}}$= $130 - 207$ GeV

• • • We do not use the following data for averages, fits, limits, etc. • • •

$ > 7.7 $

> 9.5

95

OPAL

$\mathit E_{{\mathrm {cm}}}$= $130 - 207$ GeV

RVUE

$ >9.0 $

> 5.2

95

L3

$\mathit E_{{\mathrm {cm}}}$= $130 - 189$ GeV

¹ SCHAEL 2007A limits are from $\mathit R_{c}$, $\mathit Q{}^{depl}_{FB}$, and hadronic cross section measurements.

² ABBIENDI 2004G limits are from ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit \ell}^{+}}{{\mathit \ell}^{-}}$ cross section at $\sqrt {s }$ = $130 - 207~$GeV.

³ BABICH 2003 obtain a bound $-0.175$ TeV${}^{-2}<1/\Lambda {}^{2}_{\mathit LL}$ $<0.095$ TeV${}^{-2}$ (95$\%$CL) in a model independent analysis allowing all of $\Lambda _{\mathit LL}$, $\Lambda _{\mathit LR}$, $\Lambda _{\mathit RL}$, $\Lambda _{\mathit RR}$ to coexist.

References:

EPJ C49 411

Fermion Pair Production in ${{\mathit e}^{+}}{{\mathit e}^{-}}$ Collisions at $189 - 209$ GeV and Constraints on Physics Beyond the Standard Model

EPJ C45 589

Measurement and Interpretation of Fermion-Pair Production at LEP Energies above the ${{\mathit Z}}$ Resonance

EPJ C33 173

Tests of the Standard Model and Constraints on New Physics from Measurements of Fermion Pair Production at 189 to 209 GeV at LEP

EPJ C29 103

Model Independent Constraints on Contact Interactions from LEP-2 Data Analysis

PL B489 81

Search for Manifestations of New Physics in Fermion Pair Production at LEP