PoS - Proceedings of Science
Volume 364 - European Physical Society Conference on High Energy Physics (EPS-HEP2019) - Neutrino Physics
Measurement of Charged Current anti-neutrino cross-section on water and hydrocarbon with limited acceptance at 1.5 deg off axis with the T2K beam
K.i. Kin,* N. Chikuma
*corresponding author
Full text: Not available
The measurement of the flux-integrated cross-sections on $\rm{H_{2}O}$ and CH using the T2K anti-neutrino beam is reported. The signal is defined as the charged-current interaction with one induced muon and no detected charged-pion nor proton. The phase spaces of muons are restricted to $p_{\mu}>0.4~{\rm MeV}/c$ and $\theta_{\mu}<30~\rm{degrees}$, in the laboratory frame. In addition, detectable phase spaces of pions and protons are defined as $p_{\pi}>0.2~{\rm MeV}/c$ and $\theta_{\pi}<70~\rm{degrees}$, and $p_{\rm p}>0.6~{\rm MeV}/c$ and $\theta_{\rm p}<70~\rm{degrees}$, respectively. No pions nor protons are required in these regions. Both of the $\bar{\nu}_{\mu}$ cross-sections and $\bar{\nu}_{\mu} + \nu_{\mu}$ cross-sections on $\rm{H_{2}O}$ and CH targets, and their ratios are measured. The results of $\bar{\nu}_{\mu}$ cross-section measurements are $\sigma_{\rm H_{2}O}\,=\,(1.082\pm0.068(\rm stat.)^{+0.145}_{-0.128}(\rm syst.)) \times 10^{-39}~{\rm cm^{2} / nucleon}$, $\sigma_{\rm CH}\,=\,(1.096\pm0.054(\rm stat.)^{+0.132}_{-0.117}(\rm syst.)) \times 10^{-39}~{\rm cm^{2} / nucleon}$, and $\sigma_{\rm H_{2}O}/\sigma_{\rm CH} = 0.987\pm0.078(\rm stat.)^{+0.093}_{-0.090}(\rm syst.)$, and those of $\bar{\nu}_{\mu} + \nu_{\mu}$ cross-section measurements are $\sigma_{\rm H_{2}O} = (1.155\pm0.064(\rm stat.)^{+0.148}_{-0.129}(\rm syst.)) \times 10^{-39}~{\rm cm^{2} / nucleon}$, $\sigma_{\rm CH}\,=\,(1.159\pm0.049(\rm stat.)^{+0.129}_{-0.115}(\rm syst.)) \times 10^{-39}~{\rm cm^{2} / nucleon}$, and $\sigma_{\rm H_{2}O}/\sigma_{\rm CH}\,=\,0.996\pm0.069(\rm stat.)^{+0.083}_{-0.078}(\rm syst.)$.
How to cite

Metadata are provided both in "article" format (very similar to INSPIRE) as this helps creating very compact bibliographies which can be beneficial to authors and readers, and in "proceeding" format which is more detailed and complete.

Open Access
Creative Commons LicenseCopyright owned by the author(s) under the term of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.