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Gramellini, E.; Ho, J.; Acciarri, R.; Adams, C.; Asaadi, J.; Backfish, M.; Badgett, W.; Baller, B.; Basque, V.; Benevides Rodrigues, O.; Blaszczyk, F. d. M.; Bouabid, R.; Bromberg, C.; Carey, R.; Castillo Fernandez, R.; Cavanna, F.; Cevallos Aleman, J. I.; Chatterjee, A.; Dedin, P.; dos Santos, M. V.; Edmunds, D.; Escobar, C.; Esquivel, J.; Evans, J. J.; Falcone, A.; Flanagan, W.; Fleming, B. T.; Foreman, W.; Garcia-Gamez, D.; Gastler, D.; Ghosh, T.; Gomes, R. A.; Gran, R.; Gratieri, D. R.; Guzowski, P.; Hahn, A.; Hamilton, P.; Hill, C.; Holin, A.; Hugon, J.; Iwai, E.; Jensen, D.; Johnson, R. A.; Kawai, H.; Kearns, E.; Kemp, E.; Kirby, M.; Kobilarcik, T.; Kordosky, M.; Kryczyński, P.; Lang, K.; Linehan, R.; Lockwitz, S.; Luo, X.; Machado, A. A. B.; Marchionni, A.; Maruyama, T.; Mendes Santos, L.; Metcalf, W.; Moura, C. A.; Nichol, R.; Nutini, I.; Olivier, A.; Palamara, O.; Paley, J.; Parmaksiz, I.; Passarelli Gelli, B.; Paulucci, L.; Phan, D.; Pulliam, G.; Raaf, J. L.; Rebel, B.; Reggiani Guzzo, M.; Ross-Lonergan, M.; Schmitz, D. W.; Segreto, E.; Shooltz, D.; Smith, D.; Soares Nunes, M.; Soderberg, M.; Soubasis, B.; Spagliardi, F.; St. John, J. M.; Stancari, M.; Stefan, D.; Stephens, M.; Sulej, R.; Szelc, A. M.; Tabata, M.; Totani, D.; Tzanov, M.; Walker, D.; Wenzel, H.; Williams, Z.; Yang, T.; Yu, J.; Zhang, S.; Zhu, J.
Physical review. D, 09/2022, Letnik: 106, Številka: 5Journal Article
We present the first measurement of the negative pion total hadronic cross section on argon, which we performed at the Liquid Argon In A Testbeam (LArIAT) experiment. All hadronic reaction channels, as well as hadronic elastic interactions with scattering angle greater than 5~degrees are included. The pions have a kinetic energies in the range 100-700~MeV and are produced by a beam of charged particles impinging on a solid target at the Fermilab Test Beam Facility. LArIAT employs a 0.24~ton active mass Liquid Argon Time Projection Chamber (LArTPC) to measure the pion hadronic interactions. For this measurement, LArIAT has developed the ``thin slice method", a new technique to measure cross sections with LArTPCs. While generally higher than the prediction, our measurement of the ($\pi^-$,Ar) total hadronic cross section is in agreement with the prediction of the Geant4 model when considering a model uncertainty of $\sim$5.1%.
