Eur. Phys. J. C (2015) 75: 67
https://doi.org/10.1140/epjc/s10052-015-3290-3

Regular Article - Theoretical Physics

Finite energy electroweak dyon

¹ Faculty of Liberal Education, Seoul National University, Seoul, 151-747, Korea
² Department of Physics, College of Natural Sciences, Konkuk University, Seoul, 143-701, Korea
³ Administration Building 310-4, Konkuk University, Seoul, 143-701, Korea
⁴ School of Physics and Astronomy, Seoul National University, Seoul, 151-742, Korea

^* e-mail: ymcho7@konkuk.ac.kr

Received: 28 October 2014
Accepted: 26 January 2015
Published online: 10 February 2015

Abstract

The latest MoEDAL experiment at LHC to detect the electroweak monopole makes the theoretical prediction of the monopole mass an urgent issue. We discuss three different ways to estimate the mass of the electroweak monopole. We first present the dimensional and scaling arguments which indicate the monopole mass to be around 4 to 10 TeV. To justify this we construct finite energy analytic dyon solutions which could be viewed as the regularized Cho–Maison dyon, modifying the coupling strength at short distance. Our result demonstrates that a genuine electroweak monopole whose mass scale is much smaller than the grand unification scale can exist, which can actually be detected at the present LHC.