<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" altimg="si1.gif" overflow="scroll"><mml:msubsup><mml:mi>B</mml:mi><mml:mi>s</mml:mi><mml:mn>0</mml:mn></mml:msubsup><mml:mtext>–</mml:mtext><mml:msubsup><mml:mover accent="true"><mml:mi>B</mml:mi><mml:mo>¯</mml:mo></mml:mover><mml:mi>s</mml:mi><mml:mn>0</mml:mn></mml:msubsup></mml:math> mixing in leptophobic <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" altimg="si2.gif" overflow="scroll"><mml:msup><mml:mi>Z</mml:mi><mml:mo>′</mml:mo></mml:

Baek, Seungwon; Jeon, Jong Hee; Kim, C. S.

doi:10.1016/j.physletb.2006.08.041

Cited by 47 publications

(5 citation statements)

References 44 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…However, nonuniversal couplings for the third family are still possible and could contribute (Baek et al, 2006;Barger et al, 2004a,b,c;Chen and Hatanaka, 2006;Cheung et al, 2007;Chiang et al, 2006;He and Valencia, 2006;Langacker and Plumacher, 2000;Leroux and London, 2002) to processes such as BB and DD mixing, B → µ + µ − , or b → sss (such as in B → φK). Since the Z ′ effects are at tree level, they may be important even for small couplings since they are competing with SM or MSSM loop effects.…”

Section: Flavor Changing Neutral Currentsmentioning

confidence: 99%

The physics of heavyZ′gauge bosons

2009

View full text Add to dashboard Cite

The U (1) ′ symmetry associated with a possible heavy Z ′ would have profound implications for particle physics and cosmology. The motivations for such particles in various extensions of the standard model, possible ranges for their masses and couplings, and classes of anomaly-free models are discussed. Present limits from electroweak and collider experiments are briefly surveyed, as are prospects for discovery and diagnostic study at future colliders. Implications of a Z ′ are discussed, including an extended Higgs sector, extended neutralino sector, and solution to the µ problem in supersymmetry; exotic fermions needed for anomaly cancellation; possible flavor changing neutral current effects; neutrino mass; possible Z ′ mediation of supersymmetry breaking; and cosmological implications for cold dark matter and electroweak baryogenesis.

show abstract

Section: Flavor Changing Neutral Currentsmentioning

confidence: 99%

The physics of heavyZ′gauge bosons

2009

View full text Add to dashboard Cite

show abstract

“…The effective Hamiltonian for M s 12 in the Z ′ FCNC model at the scale m b is calculated from the tree-level diagrams [30,31]: …”

Section: Z-mediated Fcnc'smentioning

confidence: 99%

Neutral gauge boson contributions to the dimuon charge asymmetry in B decays

Alok

Baek

London

2011

J. High Energ. Phys.

Self Cite

View full text Add to dashboard Cite

Recently, the DØ Collaboration measured the CP-violating like-sign dimuon charge asymmetry in neutral B decays, finding a 3.2σ difference from the standard-model (SM) prediction. A non-SM charge asymmetry a s sl suggests a newphysics (NP) contribution to B s -B s mixing. In this case, in order to explain the measured value of a s sl within its 1σ range, NP must be present in Γ s 12 , the absorptive part of the mixing. In this paper, we examine whether such an explanation is possible in models with flavor-changing Z (ZFCNC) or Z ′ (Z ′ FCNC) gauge bosons. The models must also reproduce the measured values of the indirect CP asymmetry S ψφ in B s → J/ψφ, and ∆Γ s , the B s -B s width difference. We find that the ZFCNC model cannot reproduce the present measured values of S ψφ and a s sl within their 1σ ranges. On the other hand, in the Z ′ FCNC model, the values of all three observables can be simultaneously reproduced.

show abstract

“…There are additional considerations as leptophobic Z models generically produce FCNCs in the RH quark decays [58,59] which can be heavily constraining. However, K 0 − K 0 and B 0 − B 0 are less important since the LH quarks do not carry dark charge [60,61].…”

Section: Dark Gauge Sectormentioning

confidence: 99%

A radiative model of quark masses with binary tetrahedral symmetry

Natale

2017

Nuclear Physics B

View full text Add to dashboard Cite

A radiative model of quark and lepton masses utilizing the binary tetrahedral (T ) flavor symmetry, or horizontal symmetry, is proposed which produces the first two generation of quark masses through their interactions with vector-like quarks that carry charges under an additional U (1). By softly-breaking the T to a residual Z 4 through the vector-like quark masses, a CKM mixing angle close to the Cabibbo angle is produced. In order to generate the cobimaximal neutrino oscillation pattern (θ 13 = 0, θ 23 = π/4, δ CP = ±π/2) and protect the horizontal symmetry from arbitrary corrections in the lepton sector, there are automatically two stabilizing symmetries in the dark sector. Several benchmark cases where the correct relic density is achieved in a multi-component DM scenario, as well as the potential collider signatures of the vector-like quarks are discussed. 1 alexnatale@kias.re.kr arXiv:1608.06999v3 [hep-ph]

show abstract

Bs0–B¯s0 mixing in leptophobic Z′

Cited by 47 publications

References 44 publications

The physics of heavyZ′gauge bosons

The physics of heavyZ′gauge bosons

Neutral gauge boson contributions to the dimuon charge asymmetry in B decays

A radiative model of quark masses with binary tetrahedral symmetry

Contact Info

Product

Resources

About