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Related papers: Progress toward a first observation of parity viol…

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We constrain parity-violating interactions to the surface of last scattering using spectra from the QUaD experiment's second and third seasons of observations by searching for a possible systematic rotation of the polarization directions of…

Chiral effective field theory predicts a specific charge symmetry violating amplitude for pion production. This term is shown to provide the dominant contribution to the forward-backward asymmetry in the angular distribution for the…

Nuclear Theory · Physics 2011-02-01 U. van Kolck , J. A. Niskanen , G. A. Miller

We construct the complete SU(2) parity-violating (PV) $\pi, N, \Delta$ interaction Lagrangian with one derivative, and calculate the chiral corrections to the PV Yukawa $NN\pi$ coupling constant $h_\pi$ through ${\cal O}(1/\Lambda_\chi^3)$…

High Energy Physics - Phenomenology · Physics 2009-10-31 Shi-Lin Zhu , S. J. Puglia , B. R. Holstein , M. J. Ramsey-Musolf

The most important problem of spectroscopic chiral analysis is the inherently weak chiral signals are easily overwhelmed by the environment noises. Enormous efforts had been spent to overcome this problem by enhancing the symmetry break in…

Quantum Physics · Physics 2023-10-05 Chong Ye , Yifan Sun , Xiangdong Zhang

We calculate the parity-violating nucleon-nucleon potential in heavy-baryon chiral perturbation theory up to the next-to-next-to-leading order. The one-pion exchange comes in the leading order and the next-to-next-to-leading order consists…

Nuclear Theory · Physics 2008-11-26 C. H. Hyun , S. Ando , B. Desplanques

We have studied the possible signals of unparticle in atomic parity violation(APV) along an isotope chain and in the NuTeV experiment. The effects of unparticle physics could be observed in APV, if the uncertainty in relative neutron/proton…

High Energy Physics - Phenomenology · Physics 2008-11-26 Gui-Jun Ding , Mu-Lin Yan

Chirality and chiral molecules are key elements in modern chemical and biochemical industries. Individual addressing, and the eventual separation of chiral enantiomers has been and still is an important elusive task in molecular physics and…

We derive the parity- and time-reversal-violating nuclear interactions stemming from the QCD theta term and quark/gluon operators of effective dimension 6: quark electric dipole moments, quark and gluon chromo-electric dipole moments, and…

Nuclear Theory · Physics 2015-05-28 C. M. Maekawa , E. Mereghetti , J. de Vries , U. van Kolck

Parity violating left-right scattering asymmetries at future high energy e+e- and e-e- colliders are examined. The utility of two polarized beams for precision measurements is pointed out. Sensitivity to ``new'' short-distance physics is…

High Energy Physics - Phenomenology · Physics 2011-04-15 Andrzej Czarnecki , William J. Marciano

Quark interactions with topological gluon fields in QCD can yield local $\mathcal{P}$ and $\mathcal{CP}$ violations which could explain the matter-antimatter asymmetry in our universe. Effects of $\mathcal{P}$ and $\mathcal{CP}$ violations…

Nuclear Experiment · Physics 2019-01-29 Jie Zhao , Zhoudunming Tu , Fuqiang Wang

The parity-violating asymmetries between a longitudinally-polarized electron beam and an unpolarized deuterium target have been measured recently. The measurement covered two kinematic points in the deep inelastic scattering region and five…

We measure the difference in the scattering probability when an experiment scattering longitudinally polarized 221 MeV protons from liquid hydrogen is replaced by its mirror image. The result depends on the interplay between the weak and…

Popular Physics · Physics 2007-05-23 W. D. Ramsay

Spectroscopic techniques that are sensitive to molecular chirality are important analytical tools to quantitatively determine enantiomeric excess and purity of chiral molecular samples. Many chiroptical processes however produce weak…

Chemical Physics · Physics 2026-04-02 Sebastian Hartweg , Dusan k. Bozanic , Gustavo A. Garcia-Macias , Laurent Nahon

Interest in searches for Charged Lepton Flavor Violation (CLFV) has continued in the past few decades since the observation of CLFV will indicate new physics beyond the Standard Model (BSM). As several future lepton colliders with high…

High Energy Physics - Phenomenology · Physics 2024-06-04 Xunye Cai , Jingshu Li , Ran Ding , Meng Lu , Zhengyun You , Qiang Li

The recent measurement of atomic parity violation in cesium atoms shows a $2.3\sigma$ deviation from the standard model prediction. We show that such an effect can be explained by four-fermion contact interactions with specific chiralities…

High Energy Physics - Phenomenology · Physics 2008-11-26 V. Barger , Kingman Cheung

I start by reviewing existing $\vec{p}p$ measurements with particular emphasis on the recent 221 MeV $\vec{p}p$ measurement at TRIUMF which permitted the weak meson-nucleon coupling constants $h^{pp}_\rho$ and $h^{pp}_\omega$ to be…

Nuclear Experiment · Physics 2007-05-23 W. D. Ramsay

We study the possibility of measuring parity-violating pion-nucleon coupling h_{\pi NN}^{(1)} from \pi^+ electroproton production in the threshold region. We calculate the electron-helicity asymmetry in terms of h_{\pi NN}^{(1)} and the…

Nuclear Theory · Physics 2009-11-06 Jiunn-Wei Chen , Xiangdong Ji

New-physics (NP) constraints on first-generation quark-lepton interactions are particularly interesting given the large number of complementary processes and observables that have been measured. Recently, first hints for such NP effects…

High Energy Physics - Phenomenology · Physics 2021-10-29 Andreas Crivellin , Martin Hoferichter , Matthew Kirk , Claudio Andrea Manzari , Luc Schnell

Polariton states with high levels of chiral dissymmetry offer exciting prospects for quantum information, sensing, and lasing applications. Such dissymmetry must emanate from either the involved optical resonators or the quantum emitters.…

Chemical Physics · Physics 2022-09-28 Andrew H. Salij , Randall H. Goldsmith , Roel Tempelaar

Chiral quantum optics is a growing field of research where light-matter interactions become asymmetrically dependent on momentum and spin, offering novel control over photonic and electronic degrees of freedom. Recently, the platforms for…