Search for nonresonant Higgs boson pair production in the four leptons plus two b jets final state in proton-proton collisions at √s= 13 TeV

Авторы: Belyaev A.V., Boos E., Bunichev V., Dubinin M., Dudko L., Ershov A.A., Klyukhin V., Kodolova O., Obraztsov S., Perﬁlov M., Petrushanko S.V., Savrin V., CMS Collaboration
Журнал: Journal of High Energy Physics
Том: 2023
Номер: 06
Год издания: 2023
Издательство: IOP Publishing
Местоположение издательства: [Bristol, UK], England
Первая страница: 130
DOI: 10.1007/JHEP06(2023)060
Аннотация: The first search for nonresonant production of Higgs boson pairs (HH) with one H decaying into four leptons and the other into a pair of b quarks is presented, using proton-proton collisions recorded at a center-of-mass energy of √s = 13 TeV by the CMS experiment. The analyzed data correspond to an integrated luminosity of 138 fb−1. A 95% confidence level upper limit of 32.4 is set on the signal strength modifier μ, defined as the ratio of the observed HH production rate in the HH → ZZ∗ bb¯ → 4ℓbb¯ decay channel to the standard model (SM) expectation. Possible modifications of the H trilinear coupling λ_HHH with respect to the SM value are investigated. The coupling modifier κ_λ, defined as λ_HHH divided by its SM prediction, is constrained to be within the observed (expected) range −8.8 (−9.8) < κ_λ < 13.4 (15.0) at 95% confidence level.
Добавил в систему: Клюхин Вячеслав Иванович

	ИСТИНА	Войти в систему Регистрация
	ИПМех РАН
	Главная Поиск Статистика О проекте Помощь

ИСТИНА