PoS - Proceedings of Science
Volume 398 - The European Physical Society Conference on High Energy Physics (EPS-HEP2021) - T06: QCD and Hadronic Physics
Measurement of 1-jettiness in deep-inelastic scattering at HERA
J. Hessler*, D. Britzger and S. Lee
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Pre-published on: January 17, 2022
Published on:
Abstract
A first measurement of the 1-jettiness event shape observable $\tau_1^b$ in neutral-current deep inelastic scattering is presented.
For the measurement, the equivalence of $\tau_1^b$ to the DIS thrust observable defined in the Breit frame is utilised.
The data were taken by the H1 experiment at HERA from 2003 to 2007 at a centre of mass energy of $\sqrt{s}=319~\text{GeV}$. The data amount to an integrated luminosity of $351.6~\text{pb}^{-1}$.
The triple-differential cross sections are
presented as a function of the 1-jettiness $\tau^1_b$, the
virtuality of the exchanged boson $Q^2$ and the inelasticity of the event $y$.
The data exhibit a sensitivity to the strong coupling constant and to resummation and hadronisation effects, as well as to the parton distribution functions of the proton. The data are compared to selected predictions.
DOI: https://doi.org/10.22323/1.398.0367
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