Abstract
We investigate the prospects for the discovery of neutral Higgs bosons with a pair of muons by direct searches at the CERN large hadron collider (LHC) as well as by indirect searches in the rare decay Bs→μ+μ− at the Fermilab Tevatron and the LHC. Promising results are found for the minimal supersymmetric standard model, the minimal supergravity (mSUGRA) model, and supergravity models with non-universal Higgs masses (NUHM SUGRA). For tanβ≃50, we find that (i) the contours for a branching fraction of B(Bs→μ+μ−)=1×10−8 in the parameter space are very close to the 5σ contours for pp→bϕ0→bμ+μ−+X, ϕ0=h0, H0, A0 at the LHC with an integrated luminosity (L) of 30 fb−1, (ii) the regions covered by B(Bs→μ+μ−)⩾5×10−9 and the discovery region for bϕ0→bμ+μ− with 300 fb−1 are complementary in the mSUGRA parameter space, (iii) in NUHM SUGRA models, a discovery of B(Bs→μ+μ−)≃5×10−9 at the LHC will cover regions of the parameter space beyond the direct search for bϕ0→bμ+μ− with L=300 fb−1.
Highlights
The minimal supersymmetric standard model (MSSM) [1] has two Higgs doublets φ1 and φ2 that couple to fermions with weak isospin −1/2 and +1/2 respectively [2]
We investigate the prospects for the discovery of neutral Higgs bosons with a pair of muons by direct searches at the CERN Large Hadron Collider (LHC) as well as by indirect searches in the rare decay Bs → μ+μ− at the Fermilab Tevatron and the LHC
For tan β ≃ 50, we find that (i) the contours for a branching fraction of B(Bs → μ+μ−) = 1 × 10−8 in the parameter space are very close to the 5σ contours for pp → bφ0 → bμ+μ− + X, φ0 = h0, H0, A0 at the LHC with an integrated luminosity (L) of 30 fb−1, (ii) the regions covered by B(Bs → μ+μ−) ≥ 5× 10−9 and the discovery region for bφ0 → bμ+μ− with 300 fb−1 are complementary in the minimal supergravity (mSUGRA) parameter space, (iii) in NUHM SUGRA models, a discovery of B(Bs → μ+μ−) ≃ 5 × 10−9 at the LHC will cover regions of the parameter space beyond the direct search for bφ0 → bμ+μ− with L = 300 fb−1
Summary
The minimal supersymmetric standard model (MSSM) [1] has two Higgs doublets φ1 and φ2 that couple to fermions with weak isospin −1/2 and +1/2 respectively [2]. A large value of tan β greatly enhances the production rate of Higgs bosons produced in association with bottom quarks as well as the branching fraction of the rare decay Bs → μ+μ− mediated by neutral Higgs bosons. [20] to investigate the discovery at the LHC of a neutral Higgs boson produced with one bottom quark followed by Higgs decay into a muon pair. Obtained by the Collider Detector at Fermilab (CDF) and the DØ collaborations [27] While this branching fraction is small in the SM, it could become large in supersymmetric models [28]-[46] and this rare decay provides a possible opportunity for the CDF and the DØ experiments to discover new physics in the near future.
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