Gauge invariant descriptions of gluon polarizations

Guo, Zhi Qiang; Schmidt, Iván

doi:10.1103/physrevd.87.114016

Cited by 16 publications

(12 citation statements)

References 43 publications

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“…Here L quark and L gluon are respectively the corresponding gauge invariant fermion part and gluon part of the Lagrangian (2.1), and D µ = ∂ µ − ig[A µ , · ]. The above results are identical with our previous ones obtained by using a generalized Lorentz transformation [23]. The cause of their consistency is simply that the Lie algebra of the generalized Lorentz transformation used in [23] is the direct sum of the algebra of the Lorentz transformation and that of the gauge transformation.…”

Section: Gauge Invariant Angular Momentum Currents As Summationssupporting

confidence: 87%

Gauge invariant descriptions of gluon polarizations revisited

Guo¹,

Schmidt²

2013

Phys. Rev. D

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We examine the feasibility of gauge invariant descriptions of the gluon polarization following the proposal that a gauge field can be decomposed into its physical part and its pure gauge part. We show that gauge invariant angular momentum currents can be constructed from summations of gauge variant Noether currents. We present novel expressions of the pure gauge field, which are used to formulate gauge invariant descriptions of the gluon spin and the photon spin. We show that the gauge invariant extension of the Chern-Simons current can describe the spins of the Laguerre-Gauss laser modes. We also discuss the relation of gauge invariant operators and the parton distributions constructed from Dirac variables.

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Section: Gauge Invariant Angular Momentum Currents As Summationssupporting

confidence: 87%

Gauge invariant descriptions of gluon polarizations revisited

Guo¹,

Schmidt²

2013

Phys. Rev. D

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“…The kinematic threshold for the light mirror helium (He ) component (m He = 3.7 GeV) is less than a keV, which is below the expected energy threshold of these experiments. It might be possible to probe such light dark matter in future experiments with light target materials and very low thresholds, for one such proposal see e.g [38]…”

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confidence: 99%

Mirror dark matter will be confirmed or excluded by XENON1T

Clarke

Foot

2017

Physics Letters B

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Mirror dark matter, where dark matter resides in a hidden sector exactly isomorphic to the standard model, can be probed via direct detection experiments by both nuclear and electron recoils if the kinetic mixing interaction exists. In fact, the kinetic mixing interaction appears to be a prerequisite for consistent small scale structure: Mirror dark matter halos around spiral galaxies are dissipative - losing energy via dark photon emission. This ongoing energy loss requires a substantial energy input, which can be sourced from ordinary supernovae via kinetic mixing induced processes in the supernova's core. Astrophysical considerations thereby give a lower limit on the kinetic mixing strength, and indeed lower limits on both nuclear and electron recoil rates in direct detection experiments can be estimated. We show here that potentially all of the viable parameter space will be probed in forthcoming XENON experiments including LUX and XENON1T. Thus, we anticipate that these experiments will provide a definitive test of the mirror dark matter hypothesis.Comment: about 10 page

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“…(2.4). The descriptions of gluon polarization and orbital angular momentum are given by [38][39][40]…”

Section: Gauge Invariant Gluon Polarizationmentioning

confidence: 99%

Reformulations of Yang–Mills theories with space–time tensor fields

Guo

2016

Annals of Physics

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Abstract:We provide the reformulations of Yang-Mills theories in terms of gauge invariant metric-like variables in three and four dimensions. The reformulations are used to analyze the dimension two gluon condensate and give gauge invariant descriptions of gluon polarization. In three dimensions, we obtain a non-zero dimension two gluon condensate by one loop computation, whose value is similar to the square of photon mass in the Schwinger model. In four dimensions, we obtain a Lagrangian with the dual property, which shares the similar but different property with the dual superconductor scenario. We also make discussions on the effectiveness of one loop approximation.

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Gauge invariant descriptions of gluon polarizations

Cited by 16 publications

References 43 publications

Gauge invariant descriptions of gluon polarizations revisited

Gauge invariant descriptions of gluon polarizations revisited

Mirror dark matter will be confirmed or excluded by XENON1T

Reformulations of Yang–Mills theories with space–time tensor fields

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