Searching Unparticle Signatures Through Tau Pair Production

TL;DR

This paper investigates potential unparticle signatures in tau pair production at low-energy colliders, analyzing scalar unparticle couplings through lepton flavor conserving and violating interactions, and setting upper limits based on different luminosities.

Contribution

It provides the first detailed analysis of unparticle effects in tau pair production, including both flavor conserving and violating channels, with constraints on couplings for various scaling dimensions.

Findings

Upper limits on scalar unparticle couplings are established.

Analysis covers both lepton flavor conserving and violating interactions.

Constraints depend on the scaling parameter d and luminosity.

Abstract

In this work, we study the possible unparticle signatures through tau pair production e+e- -> tau+tau- process at the low energy particle factories. We take into account lepton flavor conserving (s-channel) and violating (t-channel) couplings for the unparticle leptonic interactions. For different values of the scaling parameter d we extract upper limits on the scalar unparticle couplings at the integrated luminosities of 100/fb.yr and 1 ab/fb.yr.