On the Use of Subtraction Fields and the Lifetimes of Some Types of Meson Decay

Steinberger, J.

doi:10.1103/physrev.76.1180

Cited by 345 publications

(148 citation statements)

References 15 publications

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“…This has consequences for "real-world observables." For example, the neutral meson π 0 decays extremely fast into two photons, although selection rules based on classical symmetries predict suppression of this decay (Steinberger 1949;Adler 1969;Bell & Jackiw 1969). The phenomenology of the Quantum Hall effect can be derived from the chiral anomaly cancellation (see, e.g., the review by Bieri & Fröhlich 2011).…”

Section: Introductionmentioning

confidence: 99%

Laminar and Turbulent Dynamos in Chiral Magnetohydrodynamics. I. Theory

Rogachevskii

Ruchayskiy²,

Boyarsky

et al. 2017

ApJ

125

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The magnetohydrodynamic (MHD) description of plasmas with relativistic particles necessarily includes an additional new field, the chiral chemical potential associated with the axial charge (i.e., the number difference between right-and left-handed relativistic fermions). This chiral chemical potential gives rise to a contribution to the electric current density of the plasma (chiral magnetic effect ). We present a self-consistent treatment of the chiral MHD equations, which include the back-reaction of the magnetic field on a chiral chemical potential and its interaction with the plasma velocity field. A number of novel phenomena are exhibited. First, we show that the chiral magnetic effect decreases the frequency of the Alfvén wave for incompressible flows, increases the frequencies of the Alfvén wave and of the fast magnetosonic wave for compressible flows, and decreases the frequency of the slow magnetosonic wave. Second, we show that, in addition to the well-known laminar chiral dynamo effect, which is not related to fluid motions, there is a dynamo caused by the joint action of velocity shear and chiral magnetic effect. In the presence of turbulence with vanishing mean kinetic helicity, the derived mean-field chiral MHD equations describe turbulent large-scale dynamos caused by the chiral alpha effect, which is dominant for large fluid and magnetic Reynolds numbers. The chiral alpha effect is due to an interaction of the chiral magnetic effect and fluctuations of the small-scale current produced by tangling magnetic fluctuations (which are generated by tangling of the largescale magnetic field by sheared velocity fluctuations). These dynamo effects may have interesting consequences in the dynamics of the early universe, neutron stars, and the quark-gluon plasma.

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Section: Introductionmentioning

confidence: 99%

Laminar and Turbulent Dynamos in Chiral Magnetohydrodynamics. I. Theory

Rogachevskii

Ruchayskiy²,

Boyarsky

et al. 2017

ApJ

125

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“…In this respect, particular attention has been paid to the anomalies of Quantum Field Theory [1]. Their presence in global axial [2] and scale [3] symmetries of massless QED and QCD is notably required by the physics of light (pseudo-)scalar particle decays into two photons [4] and hadronic transitions between quarkonium levels [5].…”

Section: Introductionmentioning

confidence: 99%

QCD anomalies in hadronic weak decays

Gérard

Trine

2004

Phys. Rev. D

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“…It also had an impact in the real world, in relation to the π 0 → 2γ decay in particular. In fact, an even older paper by Nobel Prize Winner Steinberger [29] discusses this point. (c) The "ABJ anomaly" is not primarily relevant in terms of history; one learns from the theoretical techniques used previously and applied in other landscapes.…”

Section: Adler-bell-jackiw (Abj) (Or Triangle) Anomalymentioning

confidence: 99%

“Could charm (& τ) transitions be the ‘poor princess’ providing a deeper understanding of fundamental dynamics ?” or: “Finding novel forces”

Bigi

2015

Front. Phys.

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We know that our Universe is composed of only ∼ 4.5% "known" matter; therefore, our understanding is incomplete. This can be seen directly in the case of neutrino oscillations (without even considering potential other universes). Charm quarks have had considerable impact on our understanding of known matter, and quantum chromodynamics (QCD) is the only local quantum field theory to describe strong forces. It is possible to learn novel lessons concerning strong dynamics by measuring rates around the thresholds of [QQ] states with Q = b, c. Furthermore, these states provide us with gateways towards new dynamics (ND), where we must transition from "accuracy" to "precision" eras. Finally, we can make connections with τ transitions and, perhaps, with dark matter. Charm dynamics acts as a bridge between the worlds of light-and heavy-flavor hadrons (namely, beauty hadrons), and finding regional asymmetries in many-body final states may prove to be a "game changer". There are several different approaches to achieving these goals: for example, experiments such as the Super Tau-Charm Factory, Super Beauty Factory, and the Super Z 0 Factory act as gatekeepers -and deeper thinking regarding symmetries.

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On the Use of Subtraction Fields and the Lifetimes of Some Types of Meson Decay

Cited by 345 publications

References 15 publications

Laminar and Turbulent Dynamos in Chiral Magnetohydrodynamics. I. Theory

Laminar and Turbulent Dynamos in Chiral Magnetohydrodynamics. I. Theory

QCD anomalies in hadronic weak decays

“Could charm (& τ) transitions be the ‘poor princess’ providing a deeper understanding of fundamental dynamics ?” or: “Finding novel forces”

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