Recently several proposals were put forward to determine the parity of narrow baryonic resonances, in particular the Θ +. In these proceedings we will briefly comment on the general problems in this task and then discuss in detail the potential of reactions of the type N N → Θ + Y , where Y denotes a hyperon (either Σ or Λ) and the arrows indicate that a polarized initial state is required. Bes...

The new physics sensitivity of a variety of low-energy parity-violating (PV) observables is analyzed. A comparison is made between atomic PV for a single isotope, atomic PV using isotope ratios, and PV electron-hadron and electron-electron scattering. The complementarity among these observables, as well as with high-energy processes, is emphasized. Theoretical uncertainties entering the interpr...

We point out that interesting signals of the non-strongly interacting sector of the supersymmetric standard model arise from the production of charginos and neutralinos via vector boson fusion (VBF) at the Large Hadron Collider (LHC). In particular, if R-parity is violated, the hadronically quiet signals of charginos and neutralinos through direct production get considerably suppressed. We show...

The new physics sensitivity of a variety of low-energy parity-violating (PV) observables is analyzed. A comparison is made between atomic PV for a single isotope, atomic PV using isotope ratios, and PV electron-hadron and electron-electron scattering. The complementarity among these observables, as well as with high-energy processes, is emphasized. Theoretical uncertainties entering the interpr...

The study of parity-violation in semi-leptonic processes has yielded important insights into the structure of the Standard Model and the substructure of the nucleon. I discuss the future of semi-leptonic parity-violation and the role it might play in uncovering physics beyond the Standard Model. In addition to celebrating the silver anniversary this year of electron scattering at the MIT-Bates ...

A bstract Quark-sector Lorentz violation is studied in the context of Drell-Yan dilepton production including effects from Z -boson exchange. We show chiral nature weak interactions enables parity-violating and spin-dependent to be using unpolarized initial states. Constraints are placed on dimensionless CPT-even coefficients for first two generations quarks measurements Large Hadron Collider.

We construct a supersymmetric SU(2)L × SU(2)R × U(1)B−L model in which a discrete symmetry (C-parity) implements strict left-right symmetry in the scalar (Higgs) sector. Although two electroweak bidoublets are introduced to accommodate the observed fermion masses and mixings, a natural missing partner mechanism insures that a single pair of MSSM Higgs doublets survives below the left-right symm...

In the excited baryon spectrum, of particular interest is the level order of the positive-parity excited nucleon, so-called the Roper resonance N (1440) and the negative-parity nucleon N(1535). It is worth mentioning that this pattern of the level order between positive and negative-parity excited states can be found universally in the ∆, Σ and flavor-octet Λ channels. It is also interesting to...

The exotic baryon Θ+(uudds̄) is studied with microscopic calculations in a quark model by using a method of antisymmetrized molecular dynamics(AMD). We predict narrow states, J = 1/2+(I = 0), J = 3/2+(I = 0), and J = 3/2(I = 1), which nearly degenerate in a low-energy region of the uudds̄ system. We discuss NK decay widths and estimate them to be Γ < 7 for the J = {1/2+, 3/2+}, and Γ < 1 MeV for ...

The physics of charm has become one of the best laboratories exposing the limitations of the naive constituent quark model and also giving hints into a more mature description of hadron spectroscopy. Recent discoveries are a challenge that have revolutionized our understanding of the hadron spectra. In this talk we address the study of many-quark components in charmonium spectra. To make the ph...