Study of strange k*(892)0 - meson in p+p, p+al, p+au collisions in parton-hadron string dynamics
Jazyk: | ruština |
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Rok vydání: | 2022 |
Předmět: |
nuclear modification factors
quark-gluon plasma PHSD collisions of ultrarelativistic particles ÑÑÐ¾Ð»ÐºÐ½Ð¾Ð²ÐµÐ½Ð¸Ñ ÑлÑÑÑаÑелÑÑивиÑÑÑÐºÐ¸Ñ ÑаÑÑÐ¸Ñ ÐºÐ²Ð°Ñк-глÑÐ¾Ð½Ð½Ð°Ñ Ð¿Ð»Ð°Ð·Ð¼Ð° оÑноÑение инваÑианÑнÑÑ ÑпекÑÑов ÑаÑÑÐ¸Ñ ÑакÑоÑÑ ÑдеÑной модиÑикаÑии ratio of invariant particle spectra |
DOI: | 10.18720/spbpu/3/2022/vr/vr22-3469 |
Popis: | Рданной ÑабоÑе бÑли ÑаÑÑÑиÑÐ°Ð½Ñ Ð¾ÑноÑÐµÐ½Ð¸Ñ Ð¸Ð½Ð²Ð°ÑианÑнÑÑ ÑпекÑÑов K*/0 мезонов в p+p, p+Al, p+Au, d+Au, Cu+Au ÑÑолкновениÑÑ Ð¿Ñи âsNN = 200 ÐÑРв ÑÐ°Ð¼ÐºÐ°Ñ Ð¼Ð¾Ð´ÐµÐ»Ð¸ HSD, а Ñакже ÑакÑоÑÑ ÑдеÑной модиÑикаÑии K* мезонов в ÑÑолкновениÑÑ Cu+Au в ÑÐ°Ð¼ÐºÐ°Ñ Ð¼Ð¾Ð´ÐµÐ»ÐµÐ¹ PHSD и HSD. ÐÑло пÑоизведено ÑÑавнение полÑÑеннÑÑ Ð¾ÑноÑений Ñ ÑкÑпеÑименÑалÑнÑми даннÑми, полÑÑеннÑми в ÑкÑпеÑименÑе PHENIX. ÐÑноÑÐµÐ½Ð¸Ñ Ð¸Ð½Ð²Ð°ÑианÑнÑÑ ÑпекÑÑов K*/0, полÑÑеннÑе в ÑÐ°Ð¼ÐºÐ°Ñ Ð¼Ð¾Ð´ÐµÐ»Ð¸ HSD, имеÑÑ Ð±Ð»Ð¸Ð·ÐºÐ¸Ðµ к ÑкÑпеÑименÑалÑнÑм знаÑÐµÐ½Ð¸Ñ Ð² Ð»ÐµÐ³ÐºÐ¸Ñ ÑиÑÑÐµÐ¼Ð°Ñ ÑÑолкновений (p+p, p+Al, p+Au, d+Au) , но не ÑоглаÑÑÑÑÑÑ Ñ ÑаковÑми в ÑÑжелой ÑиÑÑеме ÑÑолкновений Cu+Au. ФакÑоÑÑ ÑдеÑной модиÑикаÑии K* мезонов , ÑаÑÑÑиÑаннÑе в ÑÑолкновениÑÑ Cu+Au в ÑÐ°Ð¼ÐºÐ°Ñ Ð¼Ð¾Ð´ÐµÐ»ÐµÐ¹ PHSD и HSD, не ÑоглаÑÑÑÑÑÑ Ñ ÑкÑпеÑименÑалÑнÑми ÑезÑлÑÑаÑами. In this study, the ratios of invariant spectra of the K*/0 mesons in p+p, p+Al, p+Au, d+Au, Cu+Au collision systems at â = 200 GeV were calculated in the frame of HSD model, and K* meson nuclear modification factors in Cu+Au collisions were calculated in the frame of PHSD and HSD models. The obtained results were compared with experimental data, measured by PHENIX. The ratios of the invariant spectra K*/0 in small collision systems (p+p, p+Al, p+Au, d+Au), obtained within the HSD model are consistent with experimental values, however, in the heavy Cu+Au collision system calculation results have discrepancies with experimental data. Nuclear modification factors of K* - mesons in Cu+Au collisions, calculated within the framework of the PHSD and HSD models do not predict the experimental results. |
Databáze: | OpenAIRE |
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