Using improved theoretical calculations of the decay form factors in the light cone QCD sum rule approach, we investigate the decay rates, dilepton invariant mass spectra and the forward-backward ͑FB͒ asymmetry in the decays In particular, the presently allowed large-tan ␤ solutions in SUGRA models, as well as more general flavorviolating SUSY models, yield FB asymmetries which are characteristically different from the corresponding ones in the SM.

We investigate the leading power corrections to the decay rates and distributions in the decay B→X s l ϩ l Ϫ in the standard model ͑SM͒ using heavy quark expansion ͑HQE͒ in (1/m b ) and a phenomenological model implementing the Fermi motion effects of the b quark bound in the B hadron. In the HQE method, we find that including the leading power corrections the decay width ⌫(B→X s l ϩ l Ϫ ) decreases by about 4% and the branching ratio B(B→X s l ϩ l Ϫ ) by about 1.5% from their ͑respective͒ parton model values.The dilepton invariant mass spectrum is found to be stable against power corrections over a good part of this spectrum. However, near the high-mass end point this distribution becomes negative with the current value of the nonperturbative parameter 2 ͑the 1 -dependent corrections are found to be innocuous͒, implying the breakdown of the HQE method in this region. Our results are at variance with the existing ones in the literature in both the decay rate and the invariant dilepton mass distribution calculated in the HQE approach. As an alternative, we implement the nonperturbative effects in the decay B→X s l ϩ l Ϫ using a phenomenologically motivated Gaussian Fermi motion model. We find small corrections to the branching ratio, but the nonperturbative effects are perceptible in both the dilepton mass distribution and the forward-backward asymmetry in the high dilepton mass region. Using this model for estimating the nonperturbative effects, modeling the dominant long distance contributions from the decays B→X s ϩ(J/,Ј, . . . )→X s l ϩ l Ϫ , and taking into account the next-to-leading order perturbative QCD corrections in b→sl ϩ l Ϫ , we present the decay rates and distributions for the inclusive process B→X s l ϩ l Ϫ in the SM. ͓S0556-2821͑97͒00107-0͔

The symmetry breaking of 5-dimensional SU(6) GUT is realized by Scherk-Schwarz mechanisms through trivial and pseudo non-trivial orbifold S 1 /Z 2 breakings to produce dimensional deconstruction 5D SU(6)→4D SU(6). The latter also induces near-brane weakly-coupled SU(6) Baby Higgs to further break the symmetry into SU(3) C ⊗SU(3) H ⊗U(1) C . The model successfully provides a scenario of the origin of (Little) Higgs from GUT scale, produces the (intermediate and light) Higgs boson with the most preferred range and establishes coupling unification and compactification scale correctly.October 18, 2018 1:15 WSPC/INSTRUCTION FILE Near-brane˙SU6˙IJMP 2 October 18, 2018 1:15 WSPC/INSTRUCTION FILE Near-brane˙SU6˙IJMP 3Higgses produce SM-like Higgses and become the topic of discussion in this paper. The second symmetry breaking of 4D SU(6)→ 4D SU(3)⊗SU(3)⊗U(1) is performed by SU (6) Little-like Higgs through orbifold-based field re-definition and the broken shift symmetry induced by the properties of VEV in lower-near-brane [15,16]. The VEV s are obtained from two Scherk-Schwarz parameters [4][5][6][7].One can immediately predict the birth of SU(3) Little Higgses from the SU(6)origin Little Higgses. This derivation is indeed workable and quite successful.The paper is organized as follows, first special conditions of Scherk-Schwarz breaking, the trivial and pseudo non-trivial orbifold S 1 /Z 2 breaking [15,22,24] are revealed in the next Section, then 5D model of SU(6) with 2 branes and the bulk [32,33] where gauge bosons and scalar bosons live in near-brane area (y ∼ 0) which will provide SU(6)-origin Little Higgs, and SU(6) Baby Higgs which is basically weakly-coupled. The two have been well reconciled within the model as well as SU(6) GUT and Baby Higgs.The pseudo non-trivial symmetry breaking to SU(3)⊗SU(3)⊗U(1) is explained in the next section. Subsequently it is shown that the emerging gauge bosons from broken 5-dimensional SU(6) could be considered as scalar boson [6,7,20] which provides the Coleman Weinberg potential for radiative symmetry breaking of 4D SU(6). Before summarizing the results, a brief discussion on the order estimations of relevant physical observables within the model is given.

We argue that one can search for physics beyond the standard model through measurements of the isospin-violating quantity, and direct CP violation in the partial decay rates of B ± → ρ ± γ. We illustrate this by working out theoretical profiles of the charge-conjugate averaged ratio ∆ ≡ 1 2 (∆ +0 + ∆ −0 ) and the CP asymmetry A CP (B ± → ρ ± γ) in the standard model and in some variants of the minimal supersymmetric standard model. We find that chargino contributions in the large tan β region may modify the magnitudes and flip the signs of ∆ and A CP (B ± → ρ ± γ) compared to their standard-model values, providing an unmistakeable signature of supersymmetry.

The Yang-Mills magnetofluid unification is constructed using lagrangian approach by imposing certain gauge symmetry to the matter inside the fluid. The model provides a general description for relativistic fluid interacting with Abelian or non-Abelian gauge field. The differences with the hybrid magnetofluid model are discussed, and few physical consequences of this formalism are worked out.PACS : 12.38. Mh, 47.75.+f Some experimental discoveries and studies suggest that the deconfined quark gluon matter is behaving more like a quark gluon plasma (QGP) liquid [1,2,3]. This fact motivates tremendous works in constructing the non-Abelian fluid models like magnetohydrodynamics [4,5,6,7,8,9,10,11,12].In some recent models [9,10,11], the relativistic hot fluid was described in terms of hybrid magnetofluid field which unifies the electromagnetic and fluid fields. The unification is represented by the effective field strength tensor, M µν ≡ F µν + m/qS µν combining appropriately weighted electromagnetic and fluid fields. The model has *

The impact of damping effect and external forces to the DNA breathing is investigated within the Peyrard-Bishop model. In in the continuum limit, the dynamics of the breathing of DNA is described by the forced-damped nonlinear Schrodinger equation and studied by means of variational method. The analytical solutions are obtained for special cases. It is shown that the breather propagation is decelerated in the presence of damping factor without the external force, while the envelope velocity and the amplitude increase significantly with the presence of external force. It is particularly found that the higher harmonic terms are enhanced when the periodic force is applied. It is finally argued that the external force accelerates the DNA breathing.

Longitudinal polarization asymmetry of leptons in B q → ℓ + ℓ − (q = d, s and ℓ = e, µ, τ ) decays is investigated. The analysis is done in a general manner by using the effective operators approach. It is shown that the longitudinal polarization asymmetry would provide a direct search for the scalar and pseudoscalar type interactions, which are induced in all variants of Higgs-doublet models. *

The dynamics of Davydov-Scott monomer in a thermal bath with higher order amide-site's displacement leads to anharmonic oscillation effect is investigated using full-quantum approach and the Lindblad formulation of master equation. The specific heat is calculated based on the thermodynamic partition function using the path integral method. The temperature dependence of the specific heat is studied. In the model the specific heat anomaly as pointed out in recent works by Ingold et.al. is also observed. However it is found that the anomaly occurs at high temperature region, and the anharmonic oscillation restores the positivity of specific heat.