Null tests of time-reversal invariance

Conzett, H.E.

doi:10.1103/physrevc.48.423

Cited by 34 publications

(30 citation statements)

References 21 publications

(18 reference statements)

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“…The goal is to do a null experiment in order to put an upper limit on the strength of T-odd P-even interactions via measuring A y,xz in polarized proton-deuteron scattering, which should vanish if time reversal invariance holds [135]. For details we refer to Ref.…”

Section: Symmetries and Their Violationmentioning

confidence: 99%

Meson production in nucleon?nucleon collisions close to the threshold

Hanhart¹

2004

Physics Reports

233

228

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The last decade has witnessed great experimental progress that has led to measurements of near threshold cross sections-polarized as well as unpolarized-of high accuracy for various inelastic nucleon-nucleon collision channels. These data, naturally, pose challenges to theorists to develop methods by which they can be understood and explained in commensurate detail.In this work we review the status of the present theoretical understanding of this class of reactions with special emphasis on model-independent methods. We discuss in detail not only the many observables involved in the reactions, but also the physical questions that can be addressed by studying them in the various reaction channels. The special advantages of nucleon-nucleon induced reactions are stressed.Foremost among these is the use of the initial and final states as a spin/isospin filter. This opens, for example, a window into the spin dependence of the hyperon-nucleon interaction and the dynamics of the light scalar mesons.

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Section: Symmetries and Their Violationmentioning

confidence: 99%

Meson production in nucleon?nucleon collisions close to the threshold

Hanhart¹

2004

Physics Reports

233

228

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“…[2], the total polarized cross section σ of the proton-deuteron scattering with vector polarization of the proton p p y and tensor polarization of the deuteron P xz constitutes a nulltest observable for TVPC effects. The dedicated experiment is planned at COSY [3] at proton beam energy 135 MeV.…”

Section: Introductionmentioning

confidence: 99%

Proton-Deuteron Scattering and Test of Time-Reversal Invariance

Uzikov

2016

EPJ Web of Conferences

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Abstract. The integrated proton-deuteron scattering cross section σ for transversely polarized protons (P p y ) and tensor polarized deuterons (P xz ) constitutes a null test signal for time-reversal invariance violating but P-parity conserving effects. This cross section will be measured at COSY. Using the generalized optical theorem and Glauber theory we study the null-test observable σ for different types of T-odd P-even NN-interactions.The formalism includes full spin dependence of elementary pN-amplitudes and S-and Dcomponents of the deuteron wave function.

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“…In view of the fact that a total cross-section observable is not included in the "no null test" theorem, and that such a T-test observable has been identified [15], it is important to pursue such tests because of the considerably higher precision that is inherently possible in null tests. …”

Section: Discussionmentioning

confidence: 99%

“…The theorem, however, does not encompass total cross-section observables, and it has been shown that, there, T-odd spin-correlation observables provide null tests of T symmetry (15).…”

Section: Introductionmentioning

confidence: 99%