Test of parity-conserving time-reversal invariance using polarized neutrons and nuclear spin aligned holmium

Huffman, P. R.; Roberson, N. R.; Wilburn, W. S.; Gould, C.R.; Haase, D. G.; Keith, C. D.; Raichle, B. W.; Seely, M. L.; Walston, J. R.

doi:10.1103/physrevc.55.2684

Cited by 41 publications

(30 citation statements)

References 38 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…We discuss some symmetry arguments to clarify a cause for the vanishing contribution of the g -term. The g -optical potential [11] and the corresponding coupling constant of the ρ−meson to the nucleonḡ ρ is widely used as a measure of intensity of the TVPC effects [12,13]. Since the g -term gives zero contribution to σ within the Glauber theory, this parameter cannot be applied straightforwardly for the nucleondeuteron scattering as a scale of the TVPC interactions at large enough energies.…”

Section: Discussionmentioning

confidence: 99%

Proton-Deuteron Scattering and Test of Time-Reversal Invariance

Uzikov

2016

EPJ Web of Conferences

View full text Add to dashboard Cite

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.

show abstract

Section: Discussionmentioning

confidence: 99%

Proton-Deuteron Scattering and Test of Time-Reversal Invariance

Uzikov

2016

EPJ Web of Conferences

View full text Add to dashboard Cite

show abstract

“…According to CPT theorem, the violation of CP invariance implies the TRIV. In spite of the fact that almost all known possible mechanisms of CP violation also violate parity, TVPC interactions have been a subject of experimental and theoretical studies for decades (see, for example, [2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18] and references therein), because they directly manifest phenomena beyond the Standard model. The most experimental constraints for this interactions were obtained by using low energy nuclear physics processes, which cover a large variety of nuclear reactions and nuclear decays.…”

mentioning

confidence: 99%

Time reversal invariance violating and parity conserving effects in neutron-deuteron scattering

2011

View full text Add to dashboard Cite

show abstract

“…• In comparison to the present upper limit, obtained from the experiment on Ho 165 [12] target, the TRIC experiment will be free from any model dependent corrections associated with the target nuclei because of the use of the simplest tensor polarized nuclei (deuteron).…”

Section: The Test Of Time Reversal Invariance At Cosy (Tric)mentioning

confidence: 77%

The physics program of PAX at COSY

Valdau

Aksentyev

Eversheim

et al. 2016

J. Phys.: Conf. Ser.

View full text Add to dashboard Cite

Abstract. The construction of the PAX installation was inspired by the idea to make a beam of polarized antiprotons available for the experiments at the HESR FAIR. A spin filtering experiment with transversally polarized protons was realized using the new PAX installation at COSY. The results of this measurement are in perfect agreement with the FILTEX experiment. Hence, filtering is a viable method to produce a stored beam of polarized antiprotons. Another experiment which can be pursued using the PAX installation is the test of Time Reversal Invariance at COSY (TRIC). The goal of the TRIC experiment is to improve the present upper limit on violation of the T-odd P-even interaction by an order of magnitude using a genuine null observable available in a double polarized pd scattering. The status of the PAX spin filtering experiments as well as present understanding of the possible systematic uncertainties in TRIC are presented in this contribution. PAX spin filtering experimentsHigh intensity polarized antiproton beams are not yet available for the experiments, although the potential of studies with polarized antiproton beams for physics is enormous. A detailed physics program with polarized beams of protons and antiprotons can be found in Ref. [1]. The Polarized Antiproton eXperiments (PAX) collaboration has taken over this challenge, and formulated the way to produce high intensity beams of polarized antiprotons. On the first stage of the PAX program all the methods and equipment should be tested for use with proton beams. As a second step, experiments with antiproton beams should be performed to demonstrate that it is possible to produce the first ever high intensity beam of polarized antiprotons. Finally, the HESR installation should be extended to realize the ambitious physics program with double polarized proton-antiproton experiments proposed by the PAX collaboration [1].There are two ways to polarize an initially unpolarized beam of spin 1/2 particles stored in the accelerator: particles with undesired directions of spin either should change the orientations of their spins (spin flip) or should be eliminated from the beam (spin filtering). The spin flip method would allow to preserve beam intensity and hence would be preferable over spin filtering. However, no reliable method for spin flipping has been proposed up to now. In Ref.[2] the possibility of producing beams of polarized antiprotons using the interaction between antiproton beams and polarized beams of positrons was suggested. To test the feasibility of this method the PAX collaboration performed a measurement of the spin flip cross section using an

show abstract

Test of parity-conserving time-reversal invariance using polarized neutrons and nuclear spin aligned holmium

Cited by 41 publications

References 38 publications

Proton-Deuteron Scattering and Test of Time-Reversal Invariance

Proton-Deuteron Scattering and Test of Time-Reversal Invariance

Time reversal invariance violating and parity conserving effects in neutron-deuteron scattering

The physics program of PAX at COSY

Contact Info

Product

Resources

About