Concept

Parity (physics)

Related publications (120)

Analysis of the π+ π- π+ π- and π+ π0 π- π0 final states in quasi-real two-photon collisions at LEP

Qian Wang, Aurelio Bay, Horst Vogel, Eduardo Sanchez, Zhirui Xu, Werner Lustermann, Liang Sun, Jian Zhao, Ji Hyun Kim, Zheng Wang, Matthias Weber, Xiao Wang

The reactions γ γ → π+ π- π+ π- and γ γ → π+ π0 π- π0 are studied with the L3 detector at LEP in a data sample collected at centre-of-mass energies from 161 GeV to 209 GeV with a total integrated luminosity of 698 pb-1. A spin-parity-helicity analysis of t ...

2006

Search for lepton and baryon number violating τ- decays into Λ̄π- and Λπ-

Olivier Schneider, Stewart Cole, Chao Wang, Tagir Aushev, Lei Zhang, Vladislav Balagura, Sun Hee Kim, Ji Hyun Kim

We have searched for τ lepton decays, τ-→Λ̄π- and τ-→Λπ-, that simultaneously violate the conservation of the lepton (L) and baryon (B) number using a data sample of 154 fb-1 collected with the Belle detector at the KEKB e+e- asymmetric-energy collider. No ...

2006

One-loop fermionic corrections to the instanton transition in two dimensional chiral Higgs model

Yannis Burnier

The one-loop fermionic contribution to the probability of an instanton transition with fermion number violation is calculated in the chiral Abelian Higgs model in 1+1 dimensions, where the fermions have a Yukawa coupling to the scalar field. The dependence ...

2005

Minimal gauge-Higgs unification with a flavour symmetry

Claudio Scrucca

We show that a flavour symmetry a la Froggatt-Nielsen can be naturally incorporated in models with gauge-Higgs unification, by exploiting the heavy fermions that are anyhow needed to realize realistic Yukawa couplings. The case of the minimal five-dimensio ...

2005

Astrophysical bounds on supersymmetric dark-matter Q- balls

Stable baryonic Q-balls, which appear in supersymmetric extensions of the Standard Model, could form at the end of cosmological inflation from fragmentation of the Affleck-Dine condensate. We reconsider astrophysical constraints on such Q-balls as dark mat ...

2005

Atomic clusters and phase transitions in the metastable beta-Ta phase between 4.2 and 293 K

Gervais Chapuis, Alla Arakcheeva

Atomic clusters were identified in the ground state of the non-equilibrium Ta phase (Frank-Kasper sigma-structure type) at 15, 120 and 293K. The evolution of the clusters with temperature leads to two phase transformations at 65 and 150K which are related ...

2005

Parity-violating electron deuteron scattering and the proton's neutral weak axial vector form factor

Andreea Veronica Savu, Dipanwita Dutta

We report on a new measurement of the parity-violating asymmetry in quasielastic electron scattering from the deuteron at backward angles at Q(2)=0.038 (GeV/c)(2). This quantity provides a determination of the neutral weak axial vector form factor of the n ...

2004

Non-Quasi-Static (NQS) Thermal Noise Modelling of the MOS Transistor

Christian Enz

A non-quasi-static (NQS) thermal noise model of the MOS transistor is presented that is valid in all modes of operation, from weak to strong inversion, and up to frequencies which are near or above the NQS cut-off frequency. It is shown that in addition to ...

2004

Copper Complexes of Nitrogen-Anchored Tripodal N-Heterocyclic Carbene Ligands

Xile Hu

Incorporation of a nitrogen functionality into a tripodal N-heterocyclic carbene ligand system affords the first N-anchored tetradentate tris-carbene ligands TIMENR I (R = Me (5a), t-Bu (5b), Bz (5c)). Treatment of the Me derivatized H3TIMENMe3 imid ...

2003

Anomalies, Fayet-Iliopoulos terms, and the consistency of orbifold field theories

Riccardo Rattazzi, Claudio Scrucca, Roberto Contino

We study the consistency of orbifold field theories and clarify to what extent the condition of having an anomaly-free spectrum of zero modes is sufficient to guarantee it. Preservation of gauge invariance at the quantum level is possible, although at the ...

2002

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