학술논문
First measurement of quasi-elastic $\Lambda$ baryon production in muon anti-neutrino interactions in the MicroBooNE detector
Document Type
Working Paper
Author
MicroBooNE collaboration; Abratenko, P.; Aldana, D. Andrade; Anthony, J.; Arellano, L.; Asaadi, J.; Ashkenazi, A.; Balasubramanian, S.; Baller, B.; Barr, G.; Barrow, J.; Basque, V.; Rodrigues, O. Benevides; Berkman, S.; Bhanderi, A.; Bhattacharya, M.; Bishai, M.; Blake, A.; Bogart, B.; Bolton, T.; Book, J. Y.; Camilleri, L.; Caratelli, D.; Terrazas, I. Caro; Cavanna, F.; Cerati, G.; Chen, Y.; Conrad, J. M.; Convery, M.; Cooper-Troendle, L.; Crespo-Anadon, J. I.; Del Tutto, M.; Dennis, S. R.; Detje, P.; Devitt, A.; Diurba, R.; Djurcic, Z.; Dorrill, R.; Duffy, K.; Dytman, S.; Eberly, B.; Ereditato, A.; Evans, J. J.; Fine, R.; Finnerud, O. G.; Fleming, B. T.; Foppiani, N.; Foreman, W.; Franco, D.; Furmanski, A. P.; Garcia-Gamez, D.; Gardiner, S.; Ge, G.; Gollapinni, S.; Goodwin, O.; Gramellini, E.; Green, P.; Greenlee, H.; Gu, W.; Guenette, R.; Guzowski, P.; Hagaman, L.; Hen, O.; Hicks, R.; Hilgenberg, C.; Horton-Smith, G. A.; Irwin, B.; Itay, R.; James, C.; Ji, X.; Jiang, L.; Jo, J. H.; Johnson, R. A.; Jwa, Y. J.; Kalra, D.; Kamp, N.; Karagiorgi, G.; Ketchum, W.; Kirby, M.; Kobilarcik, T.; Kreslo, I.; Leibovitch, M. B.; Lepetic, I.; Li, J. -Y.; Li, K.; Li, Y.; Lin, K.; Littlejohn, B. R.; Louis, W. C.; Luo, X.; Mariani, C.; Marsden, D.; Marshall, J.; Martinez, N.; Caicedo, D. A. Martinez; Mason, K.; Mastbaum, A.; McConkey, N.; Meddage, V.; Miller, K.; Mills, J.; Mistry, K.; Mohayai, T.; Mogan, A.; Mooney, M.; Moor, A. F.; Moore, C. D.; Lepin, L. Mora; Mousseau, J.; Babu, S. Mulleria; Naples, D.; Navrer-Agasson, A.; Nayak, N.; Nebot-Guinot, M.; Nowak, J.; Nunes, M.; Oza, N.; Palamara, O.; Pallat, N.; Paolone, V.; Papadopoulou, A.; Papavassiliou, V.; Parkinson, H.; Pate, S. F.; Patel, N.; Pavlovic, Z.; Piasetzky, E.; Ponce-Pinto, I.; Pophale, I.; Prince, S.; Qian, X.; Raaf, J. L.; Radeka, V.; Rafique, A.; Reggiani-Guzzo, M.; Ren, L.; Rochester, L.; Rondon, J. Rodriguez; Rosenberg, M.; Ross-Lonergan, M.; von Rohr, C. Rudolph; Scanavini, G.; Schmitz, D. W.; Schukraft, A.; Seligman, W.; Shaevitz, M. H.; Sharankova, R.; Shi, J.; Snider, E. L.; Soderberg, M.; Soldner-Rembold, S.; Spitz, J.; Stancari, M.; John, J. St.; Strauss, T.; Sword-Fehlberg, S.; Szelc, A. M.; Tang, W.; Taniuchi, N.; Terao, K.; Thorpe, C.; Torbunov, D.; Totani, D.; Toups, M.; Tsai, Y. -T.; Tyler, J.; Uchida, M. A.; Usher, T.; Viren, B.; Weber, M.; Wei, H.; White, A. J.; Williams, Z.; Wolbers, S.; Wongjirad, T.; Wospakrik, M.; Wresilo, K.; Wright, N.; Wu, W.; Yandel, E.; Yang, T.; Yates, L. E.; Yu, H. W.; Zeller, G. P.; Zennamo, J.; Zhang, C.
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Abstract
We present the first measurement of the cross section of Cabibbo-suppressed $\Lambda$ baryon production, using data collected with the MicroBooNE detector when exposed to the neutrinos from the Main Injector beam at the Fermi National Accelerator Laboratory. The data analyzed correspond to $2.2 \times 10^{20}$ protons on target of neutrino mode running and $4.9 \times 10^{20}$ protons on target of anti-neutrino mode running. An automated selection is combined with hand scanning, with the former identifying five candidate $\Lambda$ production events when the signal was unblinded, consistent with the GENIE prediction of $5.3 \pm 1.1$ events. Several scanners were employed, selecting between three and five events, compared with a prediction from a blinded Monte Carlo simulation study of $3.7 \pm 1.0$ events. Restricting the phase space to only include $\Lambda$ baryons that decay above MicroBooNE's detection thresholds, we obtain a flux averaged cross section of $2.0^{+2.2}_{-1.7} \times 10^{-40}$ cm$^2/$Ar, where statistical and systematic uncertainties are combined.