English

A Guide to AMSB QCD

High Energy Physics - Theory 2022-12-08 v1 High Energy Physics - Phenomenology

Abstract

We present a careful study of the chiral symmetry breaking minima and the baryonic directions in supersymmetric QCD (SU(Nc)SU(N_c) with NfN_f flavors) perturbed by Anomaly Mediated Supersymmetry Breaking (AMSB). For the s-confining case of Nf=Nc+1N_f = N_c + 1 and most of the free-magnetic phase (Nf1.43NcN_f \leq 1.43 N_c) we find that naive tree level baryonic runaways are stabilized by loop effects. Runaways are present, however, for the upper end of the free magnetic phase (Nf1.43NcN_f \gtrsim 1.43 N_c) and into conformal window, signaling the existence of incalculable minima at large field values of O(Λ){\cal O} (\Lambda). Nevertheless, the chiral symmetry breaking points are locally stable, and are expected to continuously connect to the vacua of QCD for large SUSY breaking. The case of Nf=NcN_f = N_c requires particular care due to the inherently strongly coupled nature of the quantum modified moduli space. Due to the incalculability of critical K\"ahler potential terms, the stability of the chiral symmetry breaking point along baryonic directions cannot be determined for Nf=NcN_f=N_c. With the exception of this case, all theories to which AMSB can be applied (Nf<3NcN_f < 3 N_c) possess stable chiral symmetry breaking minima, and all theories with Nf1.43NcN_f \lesssim 1.43 N_c (aside from Nf=NfN_f = N_f) are protected from runaways to incalculable minima.

Keywords

Cite

@article{arxiv.2212.03260,
  title  = {A Guide to AMSB QCD},
  author = {Csaba Csáki and Andrew Gomes and Hitoshi Murayama and Bea Noether and Digvijay Roy Varier and Ofri Telem},
  journal= {arXiv preprint arXiv:2212.03260},
  year   = {2022}
}

Comments

10 pages

R2 v1 2026-06-28T07:24:06.085Z