Measurements of the tensor analyzing power T₂₀ for the reaction γd→pnπ⁰ | Izvestiya vuzov. Fizika. 2021. № 10. DOI: 10.17223/00213411/64/10/11

Measurements of the tensor analyzing power T₂₀ for the reaction γd→pnπ⁰

The paper presents new results for the T ₂₀ component of the tensor analyzing power of the reaction γ d → pn π⁰in the photon energy range 300 MeV < E γ < 500 MeV. The experimental statistics accumulated in 2013 at the VEPP-3 accelerator-storage complex using an internal tensor-polarized gaseous deuterium target were used. The reaction events were identified by the registration method for the coincidence of a proton and two gamma quanta from the decay of a neutral pion. To determine the T ₂₀ component, the asymmetry of the yields with respect to the change in the sign of the tensor polarization of the deuterium target was measured. The experimental results are compared with theoretical calculations in which the MAID 2007 amplitude was used as the elementary amplitude for pion-nucleon photoproduction, and the contributions of pion-nucleon and nucleon-nucleon rescattering were taken into account.

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Keywords

T20 tensor analyzing power, incoherent neutral poin photoproduction, photon, tensor-polarized deuteron

Authors

Name	Organization	E-mail
Vasilishin B.I.	National Research Tomsk Polytechnic University	smilefx@tpu.ru
Gauzshtein V.V.	National Research Tomsk Polytechnic University	gauzshtein@tpu.ru
Zevakov S.A.	Budker Institute of Nuclear Physics	s.a.zevakov@inp.nsk.su
Kuzin M.Ya.	National Research Tomsk Polytechnic University	kuzin@tpu.ru
Levchuk M.I.	Stepanov Institute of Physics, National Academy of Sciences of Belarus	m.levchuk@mail.ru
Loginov A.Yu.	Tomsk State University of Control Systems and Radioelectronics	aloginov@tpu.ru
Nikolenko D.M.	Budker Institute of Nuclear Physics	d.m.nikolenko@inp.nsk.su
Rachek I.A.	Budker Institute of Nuclear Physics	rachek@inp.nsk.su
Toporkov D.K.	Budker Institute of Nuclear Physics; Novosibirsk State University	d.k.toporkov@inp.nsk.su
Fix A.I.	National Research Tomsk Polytechnic University	fix@tpu.ru
Shestakov Yu.V.	Budker Institute of Nuclear Physics; Novosibirsk State University	yu.v.shestakov@inp.nsk.su
Darvish E.	Taibah University	eeddarwish@yahoo.com
Yurchenko A.V.	Budker Institute of Nuclear Physics	a.v.yurchenko@inp.nsk.su

Всего: 13

References

Gauzshtein V.V. et al. // Nucl. Phys. A. - 2017. - V. 968. - P. 23.

Gauzshtein V.V. et al. // Phys. Atom. Nucl. - 2015. - V. 78. - P. 1.

Гаузштейн В.В. и др. // Изв. вузов. Физика. - 2016. - Т. 59. - № 6. - С. 100.

Stibunov V.N. et al. // J. Phys.: Conf. Ser. - 2011. - V. 295. - No. 1 - P. 012115.

Nikolenko D.M. et al. // JETP Lett. - 2009 - V.89 - P. 518

Rachek I.A. et al. // J. Phys.: Conf. Ser. - 2011. - V. 295. - No. 1 - P. 012106.

Луконин С.Е. и др. // Изв. вузов. Физика. - 2019. - Т. 62. - № 2. - С. 62.

Lukonin S.E. et al. // Nucl. Phys. A. - 2019. - V. 986. - P. 75.

Lukonin S.E. et al. // Int. J. Mod. Phys. E. - 2019. - V. 28. - P. 1950010.

Rachek I.A. et al. // Phys. Rev. Lett. - 2007. - V. 98. - P. 182303.

Зеваков С.А. и др. // Изв. РАН. - 2014. - Т. 78 - С. 826.

Зеваков С.А. и др. // Изв. РАН. - 2015. - Т. 79. - С. 958.

Rachek I.A. // Few-Body Syst. - 2017. - V. 58. - P. 28.

Gauzshtein V.V. et al. // Eur. Phys. J. A. - 2020. - V. 56. - P. 169.

Fix A., Arenhövel H. // Phys. Rev. C. - 2005. - V. 72. - P. 064005.

Drechsel D. et al. // MAID: available at http://www.kph.uni-mainz.de/.

Haidenbauer J., Plessas W. // Phys. Rev. C. - 1984. - V. 30. - P. 1822.

Haidenbauer J., Plessas W. // Phys. Rev. C. - 1985. - V. 32. - P. 1424.

Nozawa S., Blankleider B., Lee T.-S.H. // Nucl. Phys. A. - 1990. - V. 513. - P. 459.

Smirnov Yu.F., Tchuvil’sky Yu.M. // J. Phys. G. - 1978. - V. 4. - P. 1.

Kukulin V.I. et al. // J. Phys. G. - 2001. - V. 27. - P. 1851.

Kukulin V.I. et al. // Phys. Rev. C. - 2006. - V. 74. - P. 064005.