First Measurement of Monoenergetic Muon Neutrino Charged Current Interactions.

Autor: Aguilar-Arevalo AA; Instituto de Ciencias Nucleares, Universidad Nacional Autónoma de México, D.F. 04510, Mexico., Brown BC; Fermi National Accelerator Laboratory, Batavia, Illinois 60510, USA., Bugel L; Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA., Cheng G; Columbia University, New York, New York 10027, USA., Church ED; Yale University, New Haven, Connecticut 06520, USA., Conrad JM; Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA., Cooper RL; Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA.; New Mexico State University, Las Cruces, New Mexico 88003, USA., Dharmapalan R; University of Alabama, Tuscaloosa, Alabama 35487, USA., Djurcic Z; Argonne National Laboratory, Argonne, Illinois 60439, USA., Finley DA; Fermi National Accelerator Laboratory, Batavia, Illinois 60510, USA., Fitzpatrick RS; University of Michigan, Ann Arbor, Michigan 48109, USA., Ford R; Fermi National Accelerator Laboratory, Batavia, Illinois 60510, USA., Garcia FG; Fermi National Accelerator Laboratory, Batavia, Illinois 60510, USA., Garvey GT; Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA., Grange J; Argonne National Laboratory, Argonne, Illinois 60439, USA., Huelsnitz W; Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA., Ignarra C; Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA., Imlay R; Louisiana State University, Baton Rouge, Louisiana 70803, USA., Johnson RA; University of Cincinnati, Cincinnati, Ohio 45221, USA., Jordan JR; University of Michigan, Ann Arbor, Michigan 48109, USA., Karagiorgi G; Columbia University, New York, New York 10027, USA., Katori T; Queen Mary University of London, London E1 4NS, United Kingdom., Kobilarcik T; Fermi National Accelerator Laboratory, Batavia, Illinois 60510, USA., Louis WC; Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA., Mahn K; Columbia University, New York, New York 10027, USA.; Michigan State University, East Lansing, Michigan 48824, USA., Mariani C; Center for Neutrino Physics, Virginia Tech, Blacksburg, Virginia 24061, USA., Marsh W; Fermi National Accelerator Laboratory, Batavia, Illinois 60510, USA., Mills GB; Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA., Mirabal J; Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA., Moore CD; Fermi National Accelerator Laboratory, Batavia, Illinois 60510, USA., Mousseau J; University of Michigan, Ann Arbor, Michigan 48109, USA., Nienaber P; Saint Mary's University of Minnesota, Winona, Minnesota 55987, USA., Osmanov B; University of Florida, Gainesville, Florida 32611, USA., Pavlovic Z; Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA., Perevalov D; Fermi National Accelerator Laboratory, Batavia, Illinois 60510, USA., Ray H; University of Florida, Gainesville, Florida 32611, USA., Roe BP; University of Michigan, Ann Arbor, Michigan 48109, USA., Russell AD; Fermi National Accelerator Laboratory, Batavia, Illinois 60510, USA., Shaevitz MH; Columbia University, New York, New York 10027, USA., Spitz J; University of Michigan, Ann Arbor, Michigan 48109, USA., Stancu I; University of Alabama, Tuscaloosa, Alabama 35487, USA., Tayloe R; Indiana University, Bloomington, Indiana 47405, USA., Thornton RT; Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA., Van de Water RG; Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA., Wascko MO; Imperial College London, London SW7 2AZ, United Kingdom., White DH; Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA., Wickremasinghe DA; University of Cincinnati, Cincinnati, Ohio 45221, USA., Zeller GP; Fermi National Accelerator Laboratory, Batavia, Illinois 60510, USA., Zimmerman ED; University of Colorado, Boulder, Colorado 80309, USA.
Jazyk: angličtina
Zdroj: Physical review letters [Phys Rev Lett] 2018 Apr 06; Vol. 120 (14), pp. 141802.
DOI: 10.1103/PhysRevLett.120.141802
Abstrakt: We report the first measurement of monoenergetic muon neutrino charged current interactions. MiniBooNE has isolated 236 MeV muon neutrino events originating from charged kaon decay at rest (K^{+}→μ^{+}ν_{μ}) at the NuMI beamline absorber. These signal ν_{μ}-carbon events are distinguished from primarily pion decay in flight ν_{μ} and ν[over ¯]_{μ} backgrounds produced at the target station and decay pipe using their arrival time and reconstructed muon energy. The significance of the signal observation is at the 3.9σ level. The muon kinetic energy, neutrino-nucleus energy transfer (ω=E_{ν}-E_{μ}), and total cross section for these events are extracted. This result is the first known-energy, weak-interaction-only probe of the nucleus to yield a measurement of ω using neutrinos, a quantity thus far only accessible through electron scattering.
Databáze: MEDLINE