|
ИСТИНА |
Войти в систему Регистрация |
ИПМех РАН |
||
Measurement of the production cross section for Z gamma to nu bar(nu) gamma in pp collisions at sqrt(s) = 7 TeV and limits on Z Z gamma and Z gamma gamma triple gauge boson couplingsстатья
Статья опубликована в высокорейтинговом журнале
Информация о цитировании статьи получена из
Web of Science
Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 27 мая 2015 г.
- Авторы: Belyaev A., Boos E., Bunichev V., Dubinin M., Dudko L., Ershov A., Katkov I., Klyukhin V., Kodolova O., Lokhtin I., Markina A., Obraztsov S., Petrushanko S., Popov A.A., Savrin V., Snigirev A., CMS Collaboration
- Журнал: Journal of High Energy Physics
- Том: 2013
- Номер: 10
- Год издания: 2013
- Издательство: IOP Publishing
- Местоположение издательства: [Bristol, UK], England
- Первая страница: 164
- DOI: 10.1007/JHEP10(2013)164
- Аннотация: A measurement of the Zγ→ννˉγ cross section in pp collisions at s√ = 7 TeV is presented, using data corresponding to an integrated luminosity of 5.0 inverse femtobarns collected with the CMS detector. This measurement is based on the observation of events with an imbalance of transverse energy in excess of 130 GeV and a single photon in the absolute pseudorapidity range abs(eta) < 1.4 with transverse energy above 145 GeV. The Zγ→ννˉγ production cross section is measured to be 21.1 +/- 4.2 (stat.) +/- 4.3 (syst.) +/- 0.5 (lum.) fb, which agrees with the standard model prediction of 21.9 +/- 1.1 fb. The results are combined with the CMS measurement of Zγ production in the l+l−γ final state (where l is an electron or a muon) to yield the most stringent limits to date on triple gauge boson couplings: abs(h[3,Z]) < 2.7E-3, abs(h[4,Z]) < 1.3E-5 for ZZγ and abs(h[3,gamma]) < 2.9E-3, abs(h[4,gamma]) < 1.5E-5 for Zγγ couplings. A measurement of the Zγ→ννˉγ cross section in pp collisions at s√ = 7 TeV is presented, using data corresponding to an integrated luminosity of 5.0 inverse femtobarns collected with the CMS detector. This measurement is based on the observation of events with an imbalance of transverse energy in excess of 130 GeV and a single photon in the absolute pseudorapidity range |η| < 1.4 with transverse energy above 145 GeV. The Zγ→ννˉγ production cross section is measured to be 21.1 +/- 4.2 (stat.) +/- 4.3 (syst.) +/- 0.5 (lum.) fb, which agrees with the standard model prediction of 21.9 +/- 1.1 fb. The results are combined with the CMS measurement of Zγ production in the l+l−γ final state (where l is an electron or a muon) to yield the most stringent limits to date on triple gauge boson couplings: ∣∣hZ3∣∣<2.7×10−3,∣∣hZ4∣∣<1.3×10−5 for ZZγ and ∣∣hγ3∣∣<2.9×10−3,∣∣hγ4∣∣<1.5×10−5 for Zγγ couplings.
- Добавил в систему: Лохтин Игорь Петрович