Combination of differential D.sup.*+-./sup. cross-section measurements in deep-inelastic ep scattering at HERA

0465505 - FZÚ 2017 RIV US eng J - Článek v odborném periodiku
Abramowicz, H. - Abt, I. - Adamczyk, L. - Cvach, Jaroslav - Hladký, Jan - Reimer, Petr … celkem 287 autorů
Combination of differential D^*+- cross-section measurements in deep-inelastic ep scattering at HERA.
Journal of High Energy Physics. Roč. 2015, č. 9 (2015), 1-31, č. článku 149. ISSN 1029-8479. E-ISSN 1029-8479
Grant CEP: GA MŠMT LG14033
Institucionální podpora: RVO:68378271
Klíčová slova: lepton-nucleon scattering * QCD * heavy quark production * charm physics
Kód oboru RIV: BF - Elementární částice a fyzika vys. energií
Impakt faktor: 6.023, rok: 2015

H1 and ZEUS have published single-differential cross sections for inclusive D∗±-meson production in deep-inelastic ep scattering at HERA from their respective final data sets. These cross sections are combined in the common visible phase-space region of photon virtuality Q2> 5 GeV2, electron inelasticity 0.02 < y < 0.7 and the D∗± meson’s transverse momentum pT(D∗) > 1.5 GeV and pseudorapidity |η(D∗)| < 1.5. The combination procedure takes into account all correlations, yielding significantly reduced experimental uncertainties. Double-differential cross sections d2σ/dQ2dy are combined with earlier D∗± data, extending the kinematic range down to Q2> 1.5 GeV2. Perturbative next-to-leading-order QCD predictions are compared to the results.

Trvalý link: http://hdl.handle.net/11104/0264042