Neutrino beam flux prediction 2020

<p>The files in the following archive file contain the neutrino and antineutrino beam flux predictions for the T2K ND280 (near) and Super-Kamiokande (far) detectors.&nbsp;It supersedes the <a href="../record/5734267#.YaStE1OnxsE">previous&nbsp;flux release in 2016</a>.</p> <p>Since the previous flux release, the flux prediction has been updated to use 2009 replica target data from the NA61/SHINE experiment to tune interactions inside of the neutrino production target. The NA61/SHINE 2009 replica target measurements of &pi;^&plusmn;&nbsp;production are published in&nbsp;<a href="https://eur03.safelinks.protection.outlook.com/?url=https%3A%2F%2Flink.springer.com%2Farticle%2F10.1140%2Fepjc%2Fs10052-016-4440-y&amp;data=04%7C01%7Cteppei.katori%40kcl.ac.uk%7C392cb1750b714c1456d008d9b31a5206%7C8370cf1416f34c16b83c724071654356%7C0%7C0%7C637737749231779618%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000&amp;sdata=2aY4w0xu4PnkkAuL55OCLMd5PQUmsPtXfz9C61no2ns%3D&amp;reserved=0">Eur. Phys. J. C (2016) 76: 617</a>.&nbsp;The flux prediction released here corresponds to that used in the T2K 2020 oscillation physics result paper (to be submitted to Eur. Phys. J. C).</p> <p>The provided flux predictions include no neutrino oscillations.</p> <p>A matrix which encodes the covariance between different energy bins of the fluxes at the near and far detectors for both horn operation modes is also provided in this release.</p> <p>The provided tar* file contains the flux predictions, covariance matrix, and a README.pdf file with detailed information on the included files.</p> <p>*Note, although the file name ends .gz, this is a .tar.gz file and should be unpacked as such (tar -xvf).</p>