Mass bounds for Triplet Scalars of the Left-Right symmetric model and their future detection prospects

TL;DR

This paper establishes mass bounds and detection prospects for triplet scalars in the Left-Right symmetric model, analyzing current experimental limits and future collider sensitivities at LEP-II, Tevatron, NLC, and LHC.

Contribution

It provides new bounds on scalar masses and detailed search strategies for charged scalars at various colliders, enhancing the understanding of detectability of these particles.

Findings

Uncharged scalar mass bound of 55.4 GeV from LEP-II data.

Detection prospects at the LHC for doubly-charged scalars up to 850 GeV.

Detection reach at Tevatron for doubly-charged scalars up to 275 GeV.

Abstract

The standard formulation of the Left-Right symmetric model involves scalars transforming as a triplet under SU(2)L. This multiplet contains particles which are uncharged, singly-charged, and doubly-charged. We derive a bound on the uncharged scalar mass of 55.4 GeV using results from LEP-II and find that a range upto 110 GeV may be explored at the NLC at the 5sigma level. We also discuss search strategies for the singly- and doubly-charged scalars at the Tevatron and the LHC. Possible Standard Model backgrounds for the relevant modes are estimated and compared with the signal. At the LHC, the prospects of detecting the doubly-charged scalar are bright up to a mass of 850 GeV while the 5sigma discovery limit of the singly-charged mode extends to 240 GeV for an integrated luminosity of 100 inverse fb. At the Tevatron, with an integrated luminosity of 25 inverse fb, the doubly-charged state can be detected if its mass is less than 275 GeV while the reach for the singly charged scalar is 140 GeV.