627 research outputs found

    The Syrian Refugees in Lebanon: Moving Towards Securitization

    Full text link
    This paper analyzes Lebanese policy towards Syrian refugees within their country. The prolonged conflict in Syria has generated a large-scale influx of refugees that contributed to the addition of 1.5 million to 4.5 million Lebanon population. While other Middle Eastern countries such as Jordan and Turkey responded by accepting the arrival of these refugees, Lebanon took the opposite response. Through the analysis of securitization theory and the nexus between migration and demographic balance, it can be understood that the Lebanese Government uses a speech of act strategy in conducting securitization. Speech of act is carried out through political discourse and the role of the media in portraying refugees as an existential threat that require special measure to handle them. Lebanon also uses the issue of demographic change, sectarian balance, and the emergence of the new conflicts, as issues that threaten Lebanon domestic stability and security

    B\to X_s\gamma, X_s l^+ l^- decays and constraints on the mass insertion parameters in the MSSM

    Full text link
    In this paper, we study the upper bounds on the mass insertion parameters (δABq)ij(\delta^{q}_{AB})_{ij} in the minimal supersymmetric standard model (MSSM). We found that the information from the measured branching ratio of BXsl+lB \to X_s l^+ l^- decay can help us to improve the upper bounds on the mass insertions parameters \left (\delta^{u,d}_{AB})_{3j,i3}. Some regions allowed by the data of Br(BXsγ)Br(B \to X_s \gamma) are excluded by the requirement of a SM-like C7γ(mb)C_{7\gamma}(m_b) imposed by the data of Br(BXsl+l)Br(B \to X_s l^+ l^-).Comment: 16 pages, 5 eps figure files, typos remove

    NNLO fermionic corrections to the charm quark mass dependent matrix elements in B -> X_s gamma

    Full text link
    We compute the virtual O(alpha_s^2) fermionic contributions to the charm quark mass dependent matrix elements of the B -> X_s gamma decay. In the case of a massless quark loop insertion into the gluon propagator, our result obtained as an expansion in z=m_c^2/m_b^2 and an exact expression in terms of multi-fold MB integrals, confirms the findings of Bieri, Greub and Steinhauser [19]. We observe, however, large deviations in the case of a b-quark loop insertion.The charm quark loop shows smaller, but still noticeable differences.Comment: 11 pages, 3 figures, 1 tabl

    Variational Study of Weakly Coupled Triply Heavy Baryons

    Get PDF
    Baryons made of three heavy quarks become weakly coupled, when all the quarks are sufficiently heavy such that the typical momentum transfer is much larger than Lambda_QCD. We use variational method to estimate masses of the lowest-lying bcc, ccc, bbb and bbc states by assuming they are Coulomb bound states. Our predictions for these states are systematically lower than those made long ago by Bjorken.Comment: 31 pages, 5 figure

    Measurement of phi_3 with Dalitz Plot Analysis of B+=>D(*)K(*)+ Decay

    Full text link
    Results from the Belle and BaBar experiments on measurement of the weak angle phi_3 using a Dalitz plot analysis of the KSpi+pi- decay of the neutral D meson from the B+=>D(*)K(*)+ process are presented. The method employs the interference between D0 and D0bar to extract the angle phi_3, strong phase delta and the ratio r of suppressed and allowed amplitudes.Comment: 4 pages, 3 figures. To appear in the proceedings of the 7th International Conference on Hyperons, Charm And Beauty Hadrons (BEACH 2006), 2nd-8th July 2006, Lancaster, Englan

    First ADS analysis of B- -> D0K- decays in hadron collisions

    Full text link
    Proceedings of DISCRETE 2010, Symposium on Prospects in the Physics of Discrete Symmetries, Rome (IT), 6-11 December 2010Comment: 7 pages, 5 figure
    corecore