Physics Letters B (Jan 2025)
Measurement of the tensor analyzing power T20 for incoherent π− photoproduction on a deuteron above the first resonance region
- V.V. Gauzshtein,
- E.M. Darwish,
- A.I. Fix,
- M.Ya. Kuzin,
- M.I. Levchuk,
- A.Yu. Loginov,
- D.M. Nikolenko,
- I.A. Rachek,
- Yu.V. Shestakov,
- D.K. Toporkov,
- A.V. Yurchenko,
- B.I. Vasilishin,
- S.A. Zevakov,
- G.N. Baranov,
- A.V. Bogomyagkov,
- V.M. Borin,
- D.V. Dorokhova,
- V.L. Dorokhov,
- A.N. Zhuravlev,
- S.E. Karnaev,
- K.Yu. Karyukina,
- A.A. Kovalenko,
- V.N. Kudryavtsev,
- E.B. Levichev,
- I.B. Logashenko,
- T.V. Maltsev,
- R.Z. Mamutov,
- I.A. Morozov,
- I.N. Okunev,
- P.A. Piminov,
- L.I. Shekhtman,
- E.A. Simonov,
- S.V. Sinyatkin,
- M.A. Skamarokha,
- E.V. Starostina
Affiliations
- V.V. Gauzshtein
- Budker Institute of Nuclear Physics, 630090 Novosibirsk, Russia; Corresponding author.
- E.M. Darwish
- Physics Department, Faculty of Science, Taibah University, Medina 41411, Saudi Arabia; Physics Department, Faculty of Science, Sohag University, Sohag 82524, Egypt
- A.I. Fix
- National Research Tomsk Polytechnical University, 634050 Tomsk, Russia
- M.Ya. Kuzin
- National Research Tomsk Polytechnical University, 634050 Tomsk, Russia
- M.I. Levchuk
- Stepanov Institute of Physics, 220072 Minsk, Belarus; Institute of Applied Physics, National Academy of Sciences of Belarus, Minsk, 220072, Belarus
- A.Yu. Loginov
- Tomsk State University of Control Systems and Radioelectronics, 634050 Tomsk, Russia
- D.M. Nikolenko
- Budker Institute of Nuclear Physics, 630090 Novosibirsk, Russia
- I.A. Rachek
- Budker Institute of Nuclear Physics, 630090 Novosibirsk, Russia
- Yu.V. Shestakov
- Budker Institute of Nuclear Physics, 630090 Novosibirsk, Russia; Novosibirsk State University, 630090 Novosibirsk, Russia
- D.K. Toporkov
- Budker Institute of Nuclear Physics, 630090 Novosibirsk, Russia
- A.V. Yurchenko
- Budker Institute of Nuclear Physics, 630090 Novosibirsk, Russia
- B.I. Vasilishin
- National Research Tomsk Polytechnical University, 634050 Tomsk, Russia
- S.A. Zevakov
- Budker Institute of Nuclear Physics, 630090 Novosibirsk, Russia
- G.N. Baranov
- Budker Institute of Nuclear Physics, 630090 Novosibirsk, Russia
- A.V. Bogomyagkov
- Budker Institute of Nuclear Physics, 630090 Novosibirsk, Russia
- V.M. Borin
- Budker Institute of Nuclear Physics, 630090 Novosibirsk, Russia
- D.V. Dorokhova
- Budker Institute of Nuclear Physics, 630090 Novosibirsk, Russia
- V.L. Dorokhov
- Budker Institute of Nuclear Physics, 630090 Novosibirsk, Russia
- A.N. Zhuravlev
- Budker Institute of Nuclear Physics, 630090 Novosibirsk, Russia
- S.E. Karnaev
- Budker Institute of Nuclear Physics, 630090 Novosibirsk, Russia
- K.Yu. Karyukina
- Budker Institute of Nuclear Physics, 630090 Novosibirsk, Russia
- A.A. Kovalenko
- Budker Institute of Nuclear Physics, 630090 Novosibirsk, Russia
- V.N. Kudryavtsev
- Budker Institute of Nuclear Physics, 630090 Novosibirsk, Russia
- E.B. Levichev
- Budker Institute of Nuclear Physics, 630090 Novosibirsk, Russia
- I.B. Logashenko
- Budker Institute of Nuclear Physics, 630090 Novosibirsk, Russia; Novosibirsk State University, 630090 Novosibirsk, Russia
- T.V. Maltsev
- Budker Institute of Nuclear Physics, 630090 Novosibirsk, Russia
- R.Z. Mamutov
- Budker Institute of Nuclear Physics, 630090 Novosibirsk, Russia
- I.A. Morozov
- Budker Institute of Nuclear Physics, 630090 Novosibirsk, Russia
- I.N. Okunev
- Budker Institute of Nuclear Physics, 630090 Novosibirsk, Russia
- P.A. Piminov
- Budker Institute of Nuclear Physics, 630090 Novosibirsk, Russia
- L.I. Shekhtman
- Budker Institute of Nuclear Physics, 630090 Novosibirsk, Russia
- E.A. Simonov
- Budker Institute of Nuclear Physics, 630090 Novosibirsk, Russia
- S.V. Sinyatkin
- Budker Institute of Nuclear Physics, 630090 Novosibirsk, Russia
- M.A. Skamarokha
- Budker Institute of Nuclear Physics, 630090 Novosibirsk, Russia
- E.V. Starostina
- Budker Institute of Nuclear Physics, 630090 Novosibirsk, Russia
- Journal volume & issue
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Vol. 860
p. 139166
Abstract
New measurements of the T20 component of tensor analyzing power in the reaction γd→ppπ− for photon energies 400−700 MeV are presented. The experiment was carried out on an internal tensor-polarized gas deuterium target of the VEPP-3 electron storage ring in 2023 with the use of tagged quasi-real photons and two-proton coincidence. For determination of T20, the asymmetry caused by a change of the sign of the tensor polarization of the deuteron target was measured. The new data are compared with the results of theoretical calculations based on the quasi-free approximation including πN and NN rescattering effects.
