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Published January 1, 2013 | Version v1
Journal article Open

Search for nu(mu) -> nu(e) oscillations with the OPERA experiment in the CNGS beam

Creators

  • 1. Russian Acad Sci, INR, RUS-117312 Moscow, Russia
  • 2. Ist Nazl Fis Nucl, Sez Napoli, I-80125 Naples, Italy
  • 3. MSU SINP Lomonosov Moscow State Univ, Skobeltsyn Inst Nucl Phys, RUS-119992 Moscow, Russia
  • 4. Kobe Univ, J-6578501 Kobe, Hyogo, Japan
  • 5. Univ Bern, Albert Einstein Ctr Fundamental Phys, LHEP, CH-3012 Bern, Switzerland
  • 6. Univ Lyon 1, CNRS, IN2P3, IPNL, F-69622 Villeurbanne, France
  • 7. ETH, Inst Particle Phys, CH-8093 Zurich, Switzerland
  • 8. Ist Nazl Fis Nucl, Sez Padova, I-35131 Padua, Italy
  • 9. Univ Savoie, CNRS, IN2P3, LAPP, F-74941 Annecy Le Vieux, France
  • 10. Russian Acad Sci, LPI, RUS-119991 Moscow, Russia
  • 11. Ist Nazl Fis Nucl, Lab Nazl Frascati, I-00044 Frascati, Italy
  • 12. JINR, RUS-141980 Dubna, Russia

Description

A first result of the search for nu(mu)->nu(e) oscillations in the OPERA experiment, located at the Gran Sasso Underground Laboratory, is presented. The experiment looked for the appearance of nu(e) in the CNGS neutrino beam using the data collected in 2008 and 2009. Data are compatible with the non-oscillation hypothesis in the three-flavour mixing model. A further analysis of the same data constrains the non-standard oscillation parameters theta(new) and Delta m(new)(2) suggested by the LSND and MiniBooNE experiments. For large Delta m(new)(2) values (>0.1 eV(2)), the OPERA 90% C.L. upper limit on sin(2)(2 theta(new)) based on a Bayesian statistical method reaches the value 7.2 x 10(-3).

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