120176772
Design of the local trigger board for the Daya Bay reactor neutrino experiment
We have designed a local trigger board for the Daya Bay reactor neutrino experiment, which is aimed to measure the neutrino mixing angle sin(2) 2 theta(13) with a precision down to 1% level. The local trigger board processes both the total number of coincident photomultiplier tube (PMT) hits and the PMT energy sum to make trigger decisions. With this design, a high trigger probability is achieved to meet the system requirement. The design of the local trigger board is presented. (C) 2011 Elsevier B.V. All rights reserved.
119856045
Distribution of the dissipated angular momentum in heavy-ion collisions
The angular-momentum distributions of both fragments in low-energy heavy-ion collisions are calculated in a nonequilibrium-statistical model. The distribution functions are obtained analytically via moment expansion on the basis of a transport equation. They include the correlations between the two fragments. In conjunction with a phenomenological model for the description of the relative motion we compute fragment angular-momentum distributions as a function of energy loss and compare with experimental data.
119583997
Extended domain of validity of the Hauser-Feshbach formula in the framework of the statistical theory
It is shown that in the domain of overlapping resonances the Hauser-Feshbach formula can be derived in the framework of the statistical theory of nuclear reactions even when the energy dependence of the characteristic quantities (e.g., level density and widths) is not neglected.
121182373
Anticorrelated angular-momentum distributions in heavy-ion collisions
Abstract The angular-momentum distributions of the fragments in deeply inelastic heavy-ion collisions are shown to be anti-correlated. We derive the correlation coefficient in a transport model. The correlation angle increases towards mass symmetry and reaches —45° for symmetric fragmentation.
124105774
THE ANGULAR-MOMENTUM CORRELATION COEFFICIENT IN DISSIPATIVE HEAVY-ION COLLISIONS
Based on a transport equation of the Fokker-Planck type the correlations in theangular-momentum distributions of binary fragments in deeply inelastic heavy-ion col-lisions are investigated. A strong anticorrelation is found due to the centrifugal part ofthe driving potential. The correlation angle increases towards mass symmetry andreaches 45° for symmetric fragmentation.
53532246
Associated production of neutral Higgs boson with squark pair in the minimal supersymmetric standard model with explicit CP violation at the CERN LHC
We investigate the associated production of neutral Higgs boson with squark pair in the minimal supersymmetric standard model with and without explicit $CP$ violation, respectively. We show that the dominant productions in both cases are always ones of the lightest neutral Higgs boson associated with the lightest stop pair, which can reach a few pb, in the ranges of parameters allowed by constraints from the electric dipole moment experiments. In most of the parameter space, the total cross sections in the case with explicit $CP$ violation are significantly enhanced, compared with ones without explicit $CP$ violation. For some special parameters, several orders of magnitude enhancement can be obtained.
15826730
Higgs Searches at the Tevatron
One of the highest priority physics goals for the upgraded Tevatron experiments, CDF and D0, is the search for the Higgs boson. We present the initial results from both experiments, based on 40--90 pb$^{-1}$ integrated luminosity, of Higgs searches in several final states, including $WH$ and $ZH$, $H\to WW$, and doubly-charged Higgs.