|
ИСТИНА |
Войти в систему Регистрация |
ИПМех РАН |
||
Measurement of beauty and charm production in deep inelastic scattering at HERA and measurement of the beauty-quark massстатья
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: Dementiev R.K., Gladilin L.K., Golubkov Yu A., Khein L.A., Korzhavina I.A., Levchenko B.B., Lukina O.Yu, Proskuryakov A.S., Shcheglova L.M., Zotkin D.S., ZEUS Collaboration
- Журнал: Journal of High Energy Physics
- Том: 9
- Номер: 127
- Год издания: 2014
- Издательство: IOP Publishing
- Местоположение издательства: [Bristol, UK], England
- Первая страница: 1
- Последняя страница: 56
- DOI: 10.1007/JHEP09(2014)127
- Аннотация: The production of beauty and charm quarks in ep interactions has been studied with the ZEUS detector at HERA for exchanged four-momentum squared 5 < Q 2 < 1000 GeV2 using an integrated luminosity of 354 pb−1. The beauty and charm content in events with at least one jet have been extracted using the invariant mass of charged tracks associated with secondary vertices and the decay-length significance of these vertices. Differential cross sections as a function of Q 2, Bjorken x, jet trans- verse energy and pseudorapidity were measured and compared with next-to-leading-order QCD calculations. The beauty and charm contributions to the proton structure functions were extracted from the double-differential cross section as a function of x and Q 2. The running beauty-quark mass, m b at the scale m b , was determined from a QCD fit at next-to-leading order to HERA data for the first time and found to be m b (m b ) = 4.07 ± 0.14 (fit) − 0.07 + 0.01 (mod.) − 0.00 + 0.05 (param.) − 0.05 + 0.08 (theo.) GeV.
- Добавил в систему: Лукина Ольга Юрьевна