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arXiv · 1605.01946

A determination of mc(mc) from HERA data using a matched heavy-flavor scheme

xFitter Developers' team·:·Valerio Bertone·Stefano Camarda·Amanda Cooper-Sarkar·Alexandre Glazov·Agnieszka Luszczak·Hayk Pirumov·Ringaile Placakyte·Klaus Rabbertz·Voica Radescu·Juan Rojo·Andrey Sapranov·Oleksandr Zenaiev·Achim Geiser
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Abstract

The charm quark mass is one of the fundamental parameters of the Standard Model Lagrangian. In this work we present a determination of the MSbar charm mass from a fit to the inclusive and charm HERA deep-inelastic structure function data. The analysis is performed within the xFitter framework, with structure functions computed in the FONLL general-mass scheme as implemented in APFEL. In the case of the FONLL-C scheme, we obtain mc(mc) = 1.335 +- 0.043(exp) +0.019 -0.000(param) +0.011 -0.008(mod) +0.033 -0.008(th) GeV. We also perform an analogous determination in the fixed-flavor-number scheme at next-to-leading order, finding mc(mc) = 1.318 +- 0.054(exp) +0.011 -0.010(param) +0.015 -0.019(mod) +0.045 -0.004(th) GeV, compatible with the FONLL-C value. Our results are consistent with previous determinations from DIS data as well as with the PDG world average.

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xFitter Developers' team, :, Valerio Bertone, Stefano Camarda, Amanda Cooper-Sarkar, Alexandre Glazov, Agnieszka Luszczak, Hayk Pirumov, Ringaile Placakyte, Klaus Rabbertz, Voica Radescu, Juan Rojo, Andrey Sapranov, Oleksandr Zenaiev, Achim Geiser. 2016-05-06. A determination of mc(mc) from HERA data using a matched heavy-flavor scheme. https://arxiv.org/abs/1605.01946

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