Production of mesons and baryons in p+Al, p+Au, d+Au, 3He+Au, Cu+Au collisions at 200 GeV/nucleon and U+U at 193 GeV/nucleon
Jazyk: | ruština |
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Rok vydání: | 2022 |
Předmět: |
nuclear modification factors
quark-gluon plasma PYTHIA ÑÑолкновение ÑелÑÑивиÑÑÐºÐ¸Ñ ÑÐ´ÐµÑ ÐºÐ²Ð°Ñк-глÑÐ¾Ð½Ð½Ð°Ñ Ð¿Ð»Ð°Ð·Ð¼Ð° monte carlo simulation relativistic heavy-ion collision ÑакÑоÑÑ ÑдеÑной модиÑикаÑии моделиÑование монÑе-каÑло |
DOI: | 10.18720/spbpu/3/2023/vr/vr23-948 |
Popis: | ÐÐ°Ð½Ð½Ð°Ñ ÑабоÑа поÑвÑÑена моделиÑÐ¾Ð²Ð°Ð½Ð¸Ñ ÑÐ¾Ð¶Ð´ÐµÐ½Ð¸Ñ Ð¼ÐµÐ·Ð¾Ð½Ð¾Ð² и баÑионов в ÑÑолкновениÑÑ Â p+Al, p+Au, d+Au, 3He+Au, Cu+Au пÑи ÑнеÑгиÑÑ 200 ÐÑÐ/нÑклон и U+U пÑи ÑнеÑгии 193 ÐÑÐ/нÑклон в пÑогÑаммном пакеÑе PYTHIA. ÐкÑпеÑименÑалÑнÑе измеÑÐµÐ½Ð¸Ñ ÑÐ¾Ð¶Ð´ÐµÐ½Ð¸Ñ Ð°Ð´Ñонов ÑлÑÑÑаÑелÑÑивиÑÑÑÐºÐ¸Ñ ÑÑолкновений позволÑÐµÑ Ð¸Ð·ÑÑаÑÑ ÑвойÑÑва кваÑк-глÑонной плазмÑ. СÑавнение ÑезÑлÑÑаÑов ÑкÑпеÑименÑов Ñ Ð¿ÑедÑказаниÑми модели, не ÑÑиÑÑваÑÑÑÑ ÑÐ°Ð·Ñ ÐºÐ²Ð°Ñк глÑонной Ð¿Ð»Ð°Ð·Ð¼Ñ (PYTHIA), Ð¼Ð¾Ð¶ÐµÑ Ð¿Ð¾Ð¼Ð¾ÑÑ Ð¾ÑделиÑÑ ÑÑÑекÑÑ Ñ Ð¾Ð»Ð¾Ð´Ð½Ð¾Ð¹ ÑдеÑной маÑеÑии Ð¾Ñ Ð³Ð¾ÑÑÑей ÑдеÑной маÑеÑии. РÑабоÑе ÑаÑÑÑиÑÐ°Ð½Ñ ÑакÑоÑÑ ÑдеÑной модиÑикаÑии заÑÑженнÑÑ Â Ï-, Ï-мезонов и пÑоÑонов в ÑиÑÑÐµÐ¼Ð°Ñ Â p+Al, p+Au, d+Au, 3He+Au, Cu+Au пÑи ÑнеÑгиÑÑ 200 ÐÑÐ/нÑклон и U+U пÑи ÑнеÑгии 193 ÐÑÐ/нÑклон. РезÑлÑÑаÑÑ ÑаÑÑеÑов Ð´Ð»Ñ Ð¼ÐµÐ·Ð¾Ð½Ð¾Ð²Â Â ÑоглаÑÑÑÑÑÑ Ñ ÑкÑпеÑименÑалÑнÑми даннÑми во вÑÐµÑ ÑаÑÑмаÑÑиваемÑÑ ÑиÑÑÐµÐ¼Ð°Ñ ÑÑÐ¾Ð»ÐºÐ½Ð¾Ð²ÐµÐ½Ð¸Ñ ÑелÑÑивиÑÑÑÐºÐ¸Ñ ÑдеÑ. РаÑÑÑиÑаннÑе ÑакÑоÑÑ ÑдеÑной модиÑикаÑии -мезонов ÑовпадаÑÑ Ñ ÑкÑпеÑименÑалÑнÑми в пÑÐµÐ´ÐµÐ»Ð°Ñ Ð¿Ð¾Ð³ÑеÑноÑÑи в Ð»ÐµÐ³ÐºÐ¸Ñ ÑиÑÑÐµÐ¼Ð°Ñ Ð¸ имеÑÑ ÑиÑÑемаÑиÑеÑки менÑÑие знаÑение в ÑÑжелÑÑ ÑиÑÑÐµÐ¼Ð°Ñ . ФакÑоÑÑ ÑдеÑной модиÑикаÑии пÑоÑонов не опиÑÑваÑÑÑÑ Ð² ÑÐ°Ð¼ÐºÐ°Ñ Ð¼Ð¾Ð´ÐµÐ»Ð¸Â PYTHIAв ÑÑжелÑÑ ÑиÑÑÐµÐ¼Ð°Ñ Ð¸ ÑаÑÑи Ð»ÐµÐ³ÐºÐ¸Ñ ÑиÑÑем, ÑÐ°ÐºÐ¸Ñ ÐºÐ°ÐºÂ p+Au, d+Au.  This given work is devoted to modeling the production of mesons and baryons in p+Al, p+Au, d+Au, 3He+Au, Cu+Au collisions at energies of 200 GeV/nucleon and U+U at an energy of 193 GeV/nucleon using the PYTHIA software package. Experimental measurements of the production of hadrons in ultrarelativistic collisions make it possible to study the properties of a quark-gluon plasma. Comparing the results of experiments with the predictions of the quarkâgluon plasma phase-insensitive (PYTHIA) model can help separate the effects of cold nuclear matter from hot nuclear matter.The nuclear modification factors for charged Ï-, Ï-mesons and protons in p+Al, p+Au, d+Au, 3He+Au, Cu+Au systems at energies of 200 GeV/nucleon and U+U at energies of 193 GeV/nucleon are calculated in this work. The results of calculations for Ï^± mesons agree with the experimental data in all considered systems of collisions of relativistic nuclei. The calculated nuclear modification factors for Ï mesons coincide with the experimental ones within the error in light systems and are systematically smaller in heavy systems. Factors of nuclear modification of protons are not described within the framework of the PYTHIA model in heavy systems and some light systems, such as p+Au, d+Au. |
Databáze: | OpenAIRE |
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