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<article article-type="research-article" dtd-version="1.3" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xml:lang="ru"><front><journal-meta><journal-id journal-id-type="publisher-id">npe</journal-id><journal-title-group><journal-title xml:lang="ru">Ядерная физика и инжиниринг</journal-title><trans-title-group xml:lang="en"><trans-title>Nuclear Physics and Engineering</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">2079-5629</issn><issn pub-type="epub">2079-5637</issn><publisher><publisher-name>МИФИ</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.56304/S2079562920060391</article-id><article-id custom-type="elpub" pub-id-type="custom">npe-98</article-id><article-categories><subj-group subj-group-type="heading"><subject>Research Article</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="ru"><subject>Математическое моделирование в ядерных технологиях</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>Mathematical Modeling in Nuclear Technologies</subject></subj-group></article-categories><title-group><article-title>Разработка методов идентификации частиц в эксперименте BM@N NICA</article-title><trans-title-group xml:lang="en"><trans-title>Development of Particle Identification Methods in the BM@N Experiment at the NICA</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Машицин</surname><given-names>К. И.</given-names></name><name name-style="western" xml:lang="en"><surname>Mashitsin</surname><given-names>K. I.</given-names></name></name-alternatives><bio xml:lang="ru"><p>199034; Санкт–Петербург</p></bio><bio xml:lang="en"><p>199034; St. Petersburg</p></bio><email xlink:type="simple">MashKonst@yandex.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Мерц</surname><given-names>С. П.</given-names></name><name name-style="western" xml:lang="en"><surname>Merts</surname><given-names>S. P.</given-names></name></name-alternatives><bio xml:lang="ru"><p>141980; Дубна</p></bio><bio xml:lang="en"><p>141980; Dubna</p></bio><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Немнюгин</surname><given-names>С. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Nemnyugin</surname><given-names>S. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>199034; Санкт–Петербург</p></bio><bio xml:lang="en"><p>199034; St. Petersburg</p></bio><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Рогалев</surname><given-names>К. И.</given-names></name><name name-style="western" xml:lang="en"><surname>Rogalev</surname><given-names>K. I.</given-names></name></name-alternatives><bio xml:lang="ru"><p>199034; Санкт–Петербург</p></bio><bio xml:lang="en"><p>199034; St. Petersburg</p></bio><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Санкт–Петербургский государственный университет</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Saint Petersburg State University</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>Объединенный институт ядерных исследований</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Joint Institute for Nuclear Research</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2021</year></pub-date><pub-date pub-type="epub"><day>23</day><month>04</month><year>2024</year></pub-date><volume>12</volume><issue>3</issue><fpage>156</fpage><lpage>160</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Машицин К.И., Мерц С.П., Немнюгин С.А., Рогалев К.И., 2024</copyright-statement><copyright-year>2024</copyright-year><copyright-holder xml:lang="ru">Машицин К.И., Мерц С.П., Немнюгин С.А., Рогалев К.И.</copyright-holder><copyright-holder xml:lang="en">Mashitsin K.I., Merts S.P., Nemnyugin S.A., Rogalev K.I.</copyright-holder><license xml:lang="ru" license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>Данная работа распространяется под лицензией Creative Commons Attribution 4.0.</license-p></license><license xml:lang="en" license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>This work is licensed under a Creative Commons Attribution 4.0 License.</license-p></license></permissions><self-uri xlink:href="https://npe.elpub.ru/jour/article/view/98">https://npe.elpub.ru/jour/article/view/98</self-uri><abstract><p>   BM@N (Baryonic Matter at the Nuclotron)—первый эксперимент на ускорительном комплексе NICA (Nuclotron–based Ion Collider fAcility), в рамках которого с 2018 года проводятся физические запуски установки со сбором экспериментальных данных. Задача идентификации частиц необходима для физического анализа материи, образовавшейся при столкновении пучка с мишенью. В данной работе обсуждаются алгоритмы идентификации, основанные на методе nδ и вариации метода расстояний. Они были протестированы на смоделированных данных, представлены результаты эффективности идентификации и процент примесей для различных типов частиц.</p></abstract><trans-abstract xml:lang="en"><p>   The BM@N (Baryonic Matter at the Nuclotron) is an experiment at the NICA (Nuclotron-based Ion Collider fAcility). The first physics runs were carried out with the collection of experimental data in 2018. The problem of particle identification is necessary for the physical analysis of the matter formed after the collision of the beam with the target. This paper describes identification algorithms based on the method nδ and a variation of the distance method. The algorithms were tested on simulated data, the results are analyzed for efficiency and contaminations.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>BM@N</kwd><kwd>NICA</kwd><kwd>PID</kwd><kwd>идентификация частиц</kwd><kwd>эффективность</kwd><kwd>примеси</kwd><kwd>nδ</kwd><kwd>TOF</kwd><kwd>времяпролетная камера</kwd><kwd>импульс</kwd><kwd>магнитная жесткость</kwd></kwd-group><kwd-group xml:lang="en"><kwd>BM@N</kwd><kwd>NICA</kwd><kwd>PID</kwd><kwd>particle identification</kwd><kwd>efficiency</kwd><kwd>contaminations</kwd><kwd>nδ</kwd><kwd>tof</kwd><kwd>momentum</kwd><kwd>rigidity</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">Работа выполнена при финансовой поддержке гранта РФФИ № 18-02-40104. Автор выражает благодарность Ресурсному образовательному центру по направлению “Физика” Научного парка СПбГУ за предоставленные ресурсы</funding-statement><funding-statement xml:lang="en">The work was carried out with financial support RFBR grant No. 18-02-40104. The author expresses gratitude to the Resource Educational Center for to the board of “Physics” of the St. Petersburg State University Science Park for resources provided</funding-statement></funding-group></article-meta></front><back><ref-list><title>References</title><ref id="cit1"><label>1</label><citation-alternatives><mixed-citation xml:lang="ru">Kekelidze V. // J. Instrum. 2017. V. 12. P. 06012.</mixed-citation><mixed-citation xml:lang="en">Kekelidze V. // J. Instrum. 2017. V. 12. P. 06012.</mixed-citation></citation-alternatives></ref><ref id="cit2"><label>2</label><citation-alternatives><mixed-citation xml:lang="ru">Baranov D. et al. // KnE Energ. Phys. 2018. V. 3. P. 291.</mixed-citation><mixed-citation xml:lang="en">Baranov D. et al. // KnE Energ. Phys. 2018. V. 3. P. 291.</mixed-citation></citation-alternatives></ref><ref id="cit3"><label>3</label><citation-alternatives><mixed-citation xml:lang="ru">Adam J. et al. // Eur. Phys. J. Plus. 2016. V. 131. 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