Measurement of the production cross section of 31 GeV/c protons on carbon via beam attenuation in a 90-cm-long target
NA61/SHINE Collaboration; Acharya, A.; Adhikary, H.; Aduszkiewicz, A.; Allison, K. K.; Andronov, E. V.; Antićić, T.; Babkin, V.; Baszczyk, M.; Bhosale, S.; Blondel, A.; Bogomilov, M.; Brandin, A.; Bravar, A.; Bryliński, W.; Brzychczyk, J.; Buryakov, M.; Busygina, O.; Bzdak, A.;
Abstract:
The production cross section of 30.92 GeV/c protons on carbon is measured by the NA61/SHINE spectrometer at the CERN SPS by means of beam attenuation in a copy (replica) of the 90-cm-long target of the T2K neutrino oscillation experiment. The employed method for direct production cross-section estimation minimizes model corrections for elastic and quasi-elastic interactions. The obtained production cross section is σ$_{prod}$ = 227.6 ± 0.8(stat)$\frac{+1.9}{−3.2}$(sys) − 0.8(mod) mb. It is in agreement with previous NA61/SHINE results obtained with a thin carbon target, while providing improved precision with a total fractional uncertainty of less than 2%. This direct measurement is performed to reduce the uncertainty on the T2K neutrino flux prediction associated with the re-weighting of the interaction rate of neutrino-yielding hadrons.
| Zugehörige Institution(en) am KIT | Institut für Astroteilchenphysik (IAP) |
| Publikationstyp | Forschungsbericht/Preprint |
| Publikationsjahr | 2021 |
| Sprache | Englisch |
| Identifikator | KITopen-ID: 1000129380 |
| HGF-Programm | 51.13.03 (POF IV, LK 01) Kosmische Strahlung Auger |
| Umfang | 20 S. |
| Nachgewiesen in | arXiv |
| Relationen in KITopen |