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  • A LIQUID He3 TARGET BOR HIGH ENERGY NUCLEAR EXPERIMENTS

    I. MODENA; V. MONTELATICI(); F. SCARAMUZZI() (2015)

    The Higgs mass coincidence problem: why is the Higgs mass m2H=mZmt ?

    Torrente-Lujan, E.Dept. Physics, Murcia U., Murcia, Spain (2014)
    In the light of the recent LHC boson discovery, we present a phenomenological evaluation of the ratio ρt=mZmt/m2H , from the LHC combined mH value, we get ( (1σ) ) ρ(exp)t=0.9956±0.0081. This value is close to 1 with a precision of the order ∼1% . Similarly we evaluate the ratio ρWt=(mW+mt)/(2mH) . From the up-to-date mass values we get ρ(exp)Wt=1.0066±0.0035(1σ) . The Higgs mass is numerically close (at the 1% level) to the mH∼(mW+mt)/2 . From these relations we can write any two mass ratios...

    A Fast 20-Channel Pulse-Height Analyzer Employing Line Coding

    C. Infante; I. F. Quercia(); C. Solimani() (2015)

    Charge quantization in the ℂℙ(1) nonlinear σ -model

    Hellerman, SimeonKavli Institute for the Physics and Mathematics of the Universe (WPI), Todai Institutes for Advanced Study, The University of Tokyo, Kashiwa, Chiba 277-8582, Japan; Kehayias, John(Kavli Institute for the Physics and Mathematics of the Universe (WPI), Todai Institutes for Advanced Study, The University of Tokyo, Kashiwa, Chiba 277-8582, Japan); Yanagida, Tsutomu T.(Kavli Institute for the Physics and Mathematics of the Universe (WPI), Todai Institutes for Advanced Study, The University of Tokyo, Kashiwa, Chiba 277-8582, Japan) (2014)
    We investigate the consistency conditions for matter fields coupled to the four-dimensional ( 𝒩=1 supersymmetric) ℂℙ(1) nonlinear sigma model (the coset space SU(2)G/U(1)H ). We find that consistency requires that the U(1)H charge of the matter be quantized, in units of half of the U(1)H charge of the Nambu–Goldstone (NG) boson, if the matter has a nonsingular kinetic term and the dynamics respect the full group SU(2)G . We can then take the linearly realized group U(1)H to comprise the weak ...

    Possible antigravity regions in <math altimg="si1.gif" xmlns="http://www.w3.org/1998/Math/MathML"><mi>F</mi><mo stretchy="false">(</mo><mi>R</mi><mo stretchy="false">)</mo></math> theory?

    Bamba, KazuharuKobayashi-Maskawa Institute for the Origin of Particles and the Universe, Nagoya University, Nagoya 464-8602, Japan; Nojiri, Shin'ichi(Kobayashi-Maskawa Institute for the Origin of Particles and the Universe, Nagoya University, Nagoya 464-8602, Japan); Odintsov, Sergei D.(Department of Physics, Nagoya University, Nagoya 464-8602, Japan); Sáez-Gómez, Diego(Astrophysics, Cosmology and Gravity Centre (ACGC) and Department of Mathematics and Applied Mathematics, University of Cape Town, Rondebosch 7701, Cape Town, South Africa) (2014)
    We construct an F(R) gravity theory corresponding to the Weyl invariant two scalar field theory. We investigate whether such F(R) gravity can have the antigravity regions where the Weyl curvature invariant does not diverge at the Big Bang and Big Crunch singularities. It is revealed that the divergence cannot be evaded completely but can be much milder than that in the original Weyl invariant two scalar field theory.
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