vestifmИзвестия Национальной академии наук Беларуси. Серия физико-математических наукProceedings of the National Academy of Sciences of Belarus. Physics and Mathematics Series1561-24302524-2415The Republican Unitary Enterprise Publishing House "Belaruskaya Navuka"10.29235/1561-2430-2026-62-1-73-77vestifm-877Research ArticleФИЗИКАPHYSICSО компоненте тензорной анализирующей способности T20 в реакции γd → π0 dOn the tensor analyzing power component T20 in the reaction γd → π0 dКокоулинаЕ. С.KokoulinaE. S.

Елена Сергеевна Кокоулина – доктор физико-математических наук, доцент, начальник сектора лаборатории физики высоких энергий

ул. Жолио-Кюри, 6, 141980, Дубна

Elena S. Kokoulina – Dr. Sc. (Physics and Mathematics), Associate Professor, Head of the Sector

6, Joliot-Curie Str., 141980, Dubna

kokoulina@jinr.ruЛевчукМ. И.LevchukM. I.

Михаил Иванович Левчук – доктор физико-математических наук, главный научный сотрудник; главный научный сотрудник

пр. Независимости, 68-2, 220072, Минск; ул. Академическая, 16, 220072, Минск

Michael I. Levchuk – Dr. Sc. (Physics and Mathematics), Chief Researcher; ChiefResearcher

68-2, Nezavisimosti Ave., 220072, Minsk; 16, Akademicheskaya Str., 220072, Minsk

mlevchuk@yandex.byНевмержицкийМ. Н.NevmerzhitskyM. N.

Максим Николаевич Невмержицкий – научный сотрудник

ул. Академическая, 16, 220072, Минск

Maxim N. Nevmerzhitsky – Researcher

16, Akademicheskaya Str., 220072, Minsk

ШуляковскийР. Г.ShulyakovskyR. G.

Роман Георгиевич Шуляковский – кандидат физико-математических наук, доцент, ведущий научный сотрудник; ведущий научный сотрудник

ул. Академическая, 16, 220072, Минск; ул. Бобруйская, 11, 220006, Минск

Roman G. Shulyakovsky – Ph. D. (Physics and Mathematics), Associate Professor, Leading Researcher; Leading Researcher

16, Akademicheskaya Str., 220072, Minsk; 11, Bobruiskaya Str., 220006, Minsk

Объединенный институт ядерных исследованийJoint Institute for Nuclear ResearchИнститут физики имени Б. И. Степанова Национальной академии наук Беларуси; Институт прикладной физики Национальной академии наук БеларусиB. I. Stepanov Institute of Physics of the National Academy of Sciences of Belarus; Institute of Applied Physics of the National Academy of Sciences of BelarusИнститут прикладной физики Национальной академии наук БеларусиInstitute of Applied Physics of the National Academy of Sciences of BelarusИнститут прикладной физики Национальной академии наук Беларуси; Институт ядерных проблем Белорусского государственного университетаInstitute of Applied Physics of the National Academy of Sciences of Belarus; Institute for Nuclear Research of the Belarusian State University2026310320266217377Copyright © Кокоулина Е.С., Левчук М.И., Невмержицкий М.Н., Шуляковский Р.Г., 20262026Кокоулина Е.С., Левчук М.И., Невмержицкий М.Н., Шуляковский Р.Г.Kokoulina E.S., Levchuk M.I., Nevmerzhitsky M.N., Shulyakovsky R.G.Данная работа распространяется под лицензией Creative Commons Attribution 4.0.This work is licensed under a Creative Commons Attribution 4.0 License.https://vestifm.belnauka.by/jour/article/view/877

В рамках плосковолнового импульсного приближения рассчитана компонента тензорной анализирующей способности T20 в реакции когерентного фоторождения пионов на дейтроне. Исследована чувствительность результатов к выбору дейтронной волновой функции. Проведено сравнение полученных результатов с предсказаниями других моделей и с экспериментальными данными. Наблюдается заметное расхождение между теорией и экспериментом при энергии фотона Eγ = 400 МэВ.

We calculate the tensor analyzing power component T20 for coherent photoproduction of pions on the deuteron in the framework of the impulse approximation. The sensitivity of the results to the choice of the deuteron wave function is investigated. We compare the obtained values with the predictions of other models and with experimental data. The noticeable discrepancy between the theory and experiment was found at the photon energy Eγ = 400 MeV.

рождение мезоновреакции фоторождениясистемы нескольких телдейтронполяризационные явления в реакцияхспиновые наблюдаемыеполяризованные мишениmeson productionphotoproduction reactionsfew-body systemsdeuteronpolarization phenomena in reactionsspin observablespolarized targetsАвторы выражают глубокую признательность В. В. Гаузштейну за ценные обсуждения. Работа выполнена при поддержке Белорусского республиканского фонда фундаментальных исследований (грант № Ф24М-045).Valuable discussions with V. V. Gauzshtein are highly appreciated. This work was supported by the Belarusian Republican Foundation for Fundamental Research under contract Ф24М-045.ReferencesOsland P., Rej A. K. Coherent pion photoproduction from deuterium at intermediate energies. Nuovo Cimento A, 1976, vol. 32, no. 4, pp. 469–483. https://doi.org/10.1007/BF02730211Osland P., Rej A. K. Coherent pion photoproduction from deuterium at intermediate energies. 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The authors declare that there are no conflicts of interest present.