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Volume 346 - 23rd International Spin Physics Symposium (SPIN2018) - Parallel Session: Spin physics in Nuclear Reactions and Nuclei (F. Becattini and o. Hen)
Studying Neutral Current Elastic Scattering and the Strange Axial Form Factor in MicroBooNE
K. Woodruff* On behalf of MicroBooNE collaboration.
*corresponding author
Full text: pdf
Pre-published on: 2019 August 19
Published on: 2019 August 23
One of the least constrained contributions to the neutral current
(NC) elastic neutrino-proton cross section is the strange axial form factor,
which represents the strange quark spin contribution to the spin structure of
the proton. This becomes the net strange spin contribution, $\Delta s$, in the
limit when the negative four-momentum transfer squared ($Q^2$) is zero. The
strange axial form factor can be determined by studying NC elastic scattering
events in the MicroBooNE detector. MicroBooNE's unique ability to detect
low-energy protons is expected to allow the reconstruction of these events with
a $Q^2$ as low as 0.10 GeV$^2$ and to determine the strange axial form factor
in a model-independent approach. We present a selection of neutral current
elastic events in a subset of MicroBooNE neutrino data, as well as our plan to
extract the strange part of the axial form factor and $\Delta s$ from this
selection in the full data set.
Open Access
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