Search

We establish that the light Higgs boson mass in the context of the No-Scale Flipped SU(5) GUT with TeV-scale vector-like matter multiplets (flippons) is consistent with m=125.5±0.5 GeV in the region of the best supersymmetry (SUSY) spectrum fit to low statistics data excesses observed by ATLAS in multijet and light stop 5 fb SUSY searches at the LHC7. Simultaneous satisfaction of these disparate goals is achieved by employing a minor decrease in the SU(5) partial unification scale M to lower the flippon mass, inducing a larger Higgs boson mass shift from the flippon loops. The reduction in M, which is facilitated by a phenomenologically favorable reduction of the low-energy strong coupling constant, moreover suggests an imminently observable ( e| μ) π proton decay with a central value time scale of 1.7×10 years. At the same point in the model space, we find a lightest neutralino mass of m=145 GeV, which is suitable for the production of 130 GeV monochromatic gamma-rays through annihilations yielding associated Z-bosons; a signal with this energy signature has been identified within observations of the galactic center by the FERMI-LAT Space Telescope. In conjunction with direct correlations to the fate of the ATLAS multijet and light stop production channels presently being tested at the LHC8, we suggest that the reality of a 125.5 GeV Higgs boson affords a particularly rich company of specific and imminently testable associated observables. [ABSTRACT FROM AUTHOR]

A measurement is presented of the relative prompt production rate of ? and ? with 4.6 fb of data collected by the CMS experiment at the LHC in pp collisions at $\sqrt{s}= 7~\mathrm{TeV}$. The two states are measured via their radiative decays ??J/ ?+ ?, with the photon converting into an ee pair for J/ ? rapidity | y(J/ ?)|<1.0 and photon transverse momentum p( ?)>0.5 GeV/ c. The measurement is given for six intervals of p(J/ ?) between 7 and 25 GeV/ c. The results are compared to theoretical predictions. [ABSTRACT FROM AUTHOR]

We overview some of theory and phenomenology aspects of high energy factorization. In the theory part we focus on basic equations of high energy factorization i.e. BFKL, CCFM, BK. In the phenomenology part we focus on forward-central jets correlations at Large Hadron Collider and on production of charged particles in HERA. [ABSTRACT FROM AUTHOR]

The Higgs sector of the minimal R-symmetric supersymmetry theory is analyzed. Decay modes and production channels of the novel Higgs bosons at the LHC and e+e- [ABSTRACT FROM AUTHOR]

New experimental findings and theoretical trends concerning the cosmic ray exotic phenomena are reviewed. Motivation and possibilities of their searches at LHC experiments are discussed. [ABSTRACT FROM AUTHOR]

One of the key physics goals of the LHCb experiment at the LHC is the measurement of mixing induced CP violation in decays of Bs → J/ψφ The interference between mixing and decay gives rise to a CP-violating phase, Due to image rights restrictions, multiple line equation(s) cannot be graphically displayed. Assuming a proper-time resolution and tagging performance as observed in simulated data, together with an expected luminosity of 1 fb-1 by the end of 2011, LHCb is expected to be able to measure Due to image rights restrictions, multiple line equation(s) cannot be graphically displayed. with an error of 0.07 rad. [ABSTRACT FROM AUTHOR]

Abstract: In the framework of the left–right twin Higgs (LRTH) model, we study the production of a pair of SM-like Higgs bosons at the LHC (Higgs mass is typical in the range of 160–180 GeV). First, we examine the production rate and find that it can be significantly larger than the SM prediction. Then we investigate the decays of the Higgs-pair and find that in some parameter space the new decay mode ( is a candidate for WIMP dark matter) can be important, which can suppress sizably the conventional decay modes like , and . Finally, we study the promising channel and find that the rate can be sizably enhanced or suppressed compared with the SM prediction. [ABSTRACT FROM AUTHOR]

Abstract: The version of the warp model that we proposed to explain the mass scale hierarchy has been extended by the introduction of one or more singularities in the metric. We restricted ourselves to a real massless scalar field supposed to propagate in a five-dimensional bulk with the extra dimension being compactified on a strip or on a circle. With the same emphasis on the hermiticity and commutativity properties of the Kaluza–Klein operators, we have established all the allowed boundary conditions to be imposed on the fields. From them, for given positions of the singularities, one can deduce either mass eigenvalues building up a Kaluza–Klein tower, or a tachyon, or a zero mass state. Assuming the Planck mass to be the high mass scale and by a choice, unique for all boundary conditions, of the major warp parameters, the low lying mass eigenvalues are of the order of the TeV, in this way explaining the mass scale hierarchy. In our model, the physical masses are related to the Kaluza–Klein eigenvalues, depending on the location of the physical brane which is an arbitrary parameter of the model. Illustrative numerical calculations are given to visualize the structure of Kaluza–Klein mass eigenvalue towers. Observation at high energy colliders like LHC of a mass tower with its characteristic structure would be the fingerprint of the model. [Copyright &y& Elsevier]

The article discusses the discovery of the Higgs boson by physicists working with the European Organization for Nuclear Research's (CERN's) Large Hadron Collider (LHC) in Switzerland. Topics include an overview of the standard model of physics, how the discovery of the Higgs boson helps solve a basic problem in the standard model of physics, an analysis of the data to confirm the particle detected really is the Higgs, and the predictive power of the standard model, which particle theorists argue is based on the notion of mathematical symmetry.