Measurement of D* production in diffractive deep inelastic scattering at HERA

0487599 - FZÚ 2018 RIV DE eng J - Článek v odborném periodiku
Andreev, V. - Baghdasaryan, A. - Begzsuren, K. - Cvach, Jaroslav - Ferencei, Jozef - Hladký, Jan - Reimer, Petr … celkem 141 autorů
Measurement of D* production in diffractive deep inelastic scattering at HERA.
European Physical Journal C. Roč. 77, č. 5 (2017), s. 1-14, č. článku 340. ISSN 1434-6044. E-ISSN 1434-6052
Grant CEP: GA MŠMT LG14033
Institucionální podpora: RVO:68378271 ; RVO:61389005
Klíčová slova: diffractive deep inelastic scattering * charm meson production * boson-gluon fusion * next-to-leading order QCD
Obor OECD: Particles and field physics
Impakt faktor: 5.172, rok: 2017

Measurements of D∗ (2010) meson production in diffractive deep inelastic scattering (5<Q**2 <100 GeV**2 ) are presented which are based on HERA data recorded at a centre-of-mass energy √s = 319 GeV with an integrated luminosity of 287 pb**−1 . The reaction ep→eXY is studied, where the system X , containing at least one D∗ (2010) meson, is separated from a leading low-mass proton dissociative system Y by a large rapidity gap. The measured cross sections compare favourably with next-to-leading order QCD predictions, where charm quarks are produced via boson-gluon fusion. The charm quarks are then independently fragmented to the D∗ mesons. The calculations rely on the collinear factorisation theorem and are based on diffractive parton densities previously obtained by H1 from fits to inclusive diffractive cross sections. The data are further used to determine the diffractive to inclusive D∗ production ratio in deep inelastic scattering
Trvalý link: http://hdl.handle.net/11104/0282251