نتایج جستجو برای: symmetry breaking

تعداد نتایج: 114821  

1999
J F De Troconiz

The phenomenology of the electroweak symmetry breaking sector is expected to involve resonances decaying preferentially into heavy fermions. Three recent CDF analyses are reviewed and used to constrain Higgs and Technicolor models.

2002
Karen E. Petrie

I describe how SBDS can be utilised to break the symmetry in the Peaceably Coexisting Armies of Queens problem. Including how SBDS can be combined with other CSP techniques to produce improved performance.

2004
Joakim Westerlund Lazaros G. Papageorgiou

In this paper, a number of symmetry-breaking (SB) constraints are considered to improve the performance and decrease computational effort needed in the solution of Process Plant Layout (PPL) Problems. The PPL problems are formulated as mixed-integer linear (MILP) models. In order to determine the efficiency of the symmetry-breaking formulations, test runs are carried out on three different prob...

1997
Yu Shi

For spontaneous breaking of global or gauge symmetry, it is superfluous to assume that the vacuum expectation value of the scalar field manifesting the symmetry is nonvanishing. The vacuum with spontaneous symmetry breaking simply corresponds to the nonzero number of particles of one or more components of the real scalar field.

1998
M. B. Tully G. C. Joshi

We calculate the exact tree-level scalar mass matrices resulting from symmetry breaking using the most general gauge-invariant scalar potential of the 331 model, both with and without the condition that lepton number is conserved. Physical masses are also obtained in some cases, as well as couplings to standard and exotic gauge bosons.

1995
T Hambye

Symmetry breaking induced by top quark loops from a model without scalar mass. Abstract Considering the standard model as an eeective electroweak theory, in which we have no scalar mass term in the Higgs potential (2 = 0), we show that the spontaneous symmetry breaking of SU(2) L U(1) can be induced by top loops. The Higgs boson mass obtained is smaller than 300 GeV.

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