Электронный каталог

Статья

Tropina, A.
Search for Associated Production of a Higgs Boson with a Single Top Quark at *%s =13 TeV with the ATLAS Detector / A.Tropina, I.Boyko, N.Huseynov, A.Dadashova // Физика элементарных частиц и атомного ядра. Письма. – 2026. – Т. 23, № 5. – P. 475. – URL: https://www1.jinr.ru/Pepan_letters/panl_2026_5/14_Tropina_ann.pdf.

An analysis is presented concerning the search for the associated production of a Higgs boson with a single top quark (tH), a process highly sensitive to the complex phase of the top-quark Yukawa coupling. The analysis uses the full 140 fb&sup(−1) of ATLAS data at *%s = 13 TeV, targeting H *> bb, WW, ZZ, *t*t decays. Advanced multivariate analysis techniques were employed to achieve optimal sensitivity and to separate the tiny tH signal from the large background. The measured signal strength is m&sub(tH) =8.1 *( 2.6(stat.) *( 2.0(syst.). The observed (expected) significance of the tH signal over the background-only hypothesis is 2.8*s (0.4*s). The observed (expected) upper limit on the tH production cross section is 13.9 (6.1) times the Standard Model prediction at the 95% confidence level. Interpretations for both Standard Model and inverted top-quark Yukawa coupling scenarios are also presented.



Спец.(статьи,препринты) = С 346.6д1 - Чармоний, боттомоний, топ-кварк. Очарованные частицы и др. резонансы из тяжелых кварков
ОИЯИ = ОИЯИ (JINR)2026