4 results on '"Tavera MA"'
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2. Search for active neutrino disappearance using neutral-current interactions in the MINOS long-baseline experiment.
- Author
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Adamson P, Andreopoulos C, Arms KE, Armstrong R, Auty DJ, Ayres DS, Backhouse C, Baller B, Barr G, Barrett WL, Becker BR, Belias A, Bernstein RH, Bhattacharya D, Bishai M, Blake A, Bock GJ, Boehm J, Boehnlein DJ, Bogert D, Bower C, Buckley-Geer E, Cavanaugh S, Chapman JD, Cherdack D, Childress S, Choudhary BC, Cobb JH, Coleman SJ, Culling AJ, de Jong JK, Dierckxsens M, Diwan MV, Dorman M, Dytman SA, Escobar CO, Evans JJ, Harris EF, Feldman GJ, Frohne MV, Gallagher HR, Godley A, Goodman MC, Gouffon P, Gran R, Grashorn EW, Grossman N, Grzelak K, Habig A, Harris D, Harris PG, Hartnell J, Hatcher R, Heller K, Himmel A, Holin A, Hsu L, Hylen J, Irwin GM, Ishitsuka M, Jaffe DE, James C, Jensen D, Kafka T, Kasahara SM, Kim JJ, Kim MS, Koizumi G, Kopp S, Kordosky M, Koskinen DJ, Kotelnikov SK, Kreymer A, Kumaratunga S, Lang K, Ling J, Litchfield PJ, Litchfield RP, Loiacono L, Lucas P, Ma J, Mann WA, Marchionni A, Marshak ML, Marshall JS, Mayer N, McGowan AM, Meier JR, Messier MD, Metelko CJ, Michael DG, Miller WH, Mishra SR, Moore CD, Morfín J, Mualem L, Mufson S, Murgia S, Musser J, Naples D, Nelson JK, Newman HB, Nichol RJ, Nicholls TC, Ochoa-Ricoux JP, Oliver WP, Ospanov R, Paley J, Paolone V, Para A, Patzak T, Pavlović Z, Pawloski G, Pearce GF, Peck CW, Petyt DA, Pittam R, Plunkett RK, Rahaman A, Rameika RA, Raufer TM, Rebel B, Reichenbacher J, Rodrigues PA, Rosenfeld C, Rubin HA, Ryabov VA, Sanchez MC, Saoulidou N, Schneps J, Schreiner P, Shanahan P, Smart W, Smith C, Sousa A, Speakman B, Stamoulis P, Strait M, Tagg N, Talaga RL, Tavera MA, Thomas J, Thomson MA, Thron JL, Tinti G, Trostin I, Tsarev VA, Tzanakos G, Urheim J, Vahle P, Viren B, Ward DR, Watabe M, Weber A, Webb RC, Wehmann A, West N, White C, Wojcicki SG, Wright DM, Yang T, Zhang K, and Zwaska R
- Abstract
We report the first detailed comparisons of the rates and spectra of neutral-current neutrino interactions at two widely separated locations. A depletion in the rate at the far site would indicate mixing between nu(mu) and a sterile particle. No anomalous depletion in the reconstructed energy spectrum is observed. Assuming oscillations occur at a single mass-squared splitting, a fit to the neutral- and charged-current energy spectra limits the fraction of nu(mu) oscillating to a sterile neutrino to be below 0.68 at 90% confidence level. A less stringent limit due to a possible contribution to the measured neutral-current event rate at the far site from nu(e) appearance at the current experimental limit is also presented.
- Published
- 2008
- Full Text
- View/download PDF
3. Testing Lorentz invariance and CPT conservation with NuMI neutrinos in the MINOS near detector.
- Author
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Adamson P, Andreopoulos C, Arms KE, Armstrong R, Auty DJ, Ayres DS, Baller B, Barr G, Barrett WL, Becker BR, Belias A, Bernstein RH, Bhattacharya D, Bishai M, Blake A, Bock GJ, Boehm J, Boehnlein DJ, Bogert D, Bower C, Buckley-Geer E, Cavanaugh S, Chapman JD, Cherdack D, Childress S, Choudhary BC, Coleman SJ, Culling AJ, de Jong JK, Diwan MV, Dorman M, Dytman SA, Escobar CO, Evans JJ, Falk Harris E, Feldman GJ, Frohne MV, Gallagher HR, Goodman MC, Gouffon P, Gran R, Grashorn EW, Grossman N, Grzelak K, Habig A, Harris D, Harris PG, Hartnell J, Hatcher R, Heller K, Himmel A, Holin A, Hylen J, Irwin GM, Ishitsuka M, Jaffe DE, James C, Jensen D, Kafka T, Kasahara SM, Kim JJ, Koizumi G, Kopp S, Kordosky M, Koskinen DJ, Kreymer A, Kumaratunga S, Lang K, Ling J, Litchfield PJ, Litchfield RP, Loiacono L, Lucas P, Ma J, Mann WA, Marshak ML, Marshall JS, Mayer N, McGowan AM, Meier JR, Messier MD, Metelko CJ, Michael DG, Miller JL, Miller WH, Mishra SR, Moore CD, Morfín J, Mualem L, Mufson S, Murgia S, Musser J, Naples D, Nelson JK, Newman HB, Nichol RJ, Nicholls TC, Ochoa-Ricoux JP, Oliver WP, Ospanov R, Paley J, Paolone V, Para A, Patzak T, Pavlović Z, Pawloski G, Pearce GF, Peck CW, Petyt DA, Pittam R, Plunkett RK, Rahaman A, Rameika RA, Raufer TM, Rebel B, Reichenbacher J, Rodrigues PA, Rosenfeld C, Rubin HA, Sanchez MC, Saoulidou N, Schneps J, Schreiner P, Shanahan P, Smart W, Sousa A, Speakman B, Stamoulis P, Strait M, Tagg N, Talaga RL, Tavera MA, Thomas J, Thompson J, Thomson MA, Thron JL, Tinti G, Tzanakos G, Urheim J, Vahle P, Viren B, Watabe M, Weber A, Webb RC, Wehmann A, West N, White C, Wojcicki SG, Yang T, Zois M, Zhang K, and Zwaska R
- Abstract
A search for a sidereal modulation in the MINOS near detector neutrino data was performed. If present, this signature could be a consequence of Lorentz and CPT violation as predicted by the effective field theory called the standard-model extension. No evidence for a sidereal signal in the data set was found, implying that there is no significant change in neutrino propagation that depends on the direction of the neutrino beam in a sun-centered inertial frame. Upper limits on the magnitudes of the Lorentz and CPT violating terms in the standard-model extension lie between 10(-4) and 10(-2) of the maximum expected, assuming a suppression of these signatures by a factor of 10(-17).
- Published
- 2008
- Full Text
- View/download PDF
4. Measurement of neutrino oscillations with the MINOS detectors in the NuMI beam.
- Author
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Adamson P, Andreopoulos C, Arms KE, Armstrong R, Auty DJ, Ayres DS, Baller B, Barnes PD Jr, Barr G, Barrett WL, Becker BR, Belias A, Bernstein RH, Bhattacharya D, Bishai M, Blake A, Bock GJ, Boehm J, Boehnlein DJ, Bogert D, Bower C, Buckley-Geer E, Cavanaugh S, Chapman JD, Cherdack D, Childress S, Choudhary BC, Cobb JH, Coleman SJ, Culling AJ, de Jong JK, Dierckxsens M, Diwan MV, Dorman M, Dytman SA, Escobar CO, Evans JJ, Harris EF, Feldman GJ, Frohne MV, Gallagher HR, Godley A, Goodman MC, Gouffon P, Gran R, Grashorn EW, Grossman N, Grzelak K, Habig A, Harris D, Harris PG, Hartnell J, Hatcher R, Heller K, Himmel A, Holin A, Hylen J, Irwin GM, Ishitsuka M, Jaffe DE, James C, Jensen D, Kafka T, Kasahara SM, Kim JJ, Kim MS, Koizumi G, Kopp S, Kordosky M, Koskinen DJ, Kotelnikov SK, Kreymer A, Kumaratunga S, Lang K, Ling J, Litchfield PJ, Litchfield RP, Loiacono L, Lucas P, Ma J, Mann WA, Marchionni A, Marshak ML, Marshall JS, Mayer N, McGowan AM, Meier JR, Merzon GI, Messier MD, Metelko CJ, Michael DG, Miller JL, Miller WH, Mishra SR, Moore CD, Morfín J, Mualem L, Mufson S, Murgia S, Musser J, Naples D, Nelson JK, Newman HB, Nichol RJ, Nicholls TC, Ochoa-Ricoux JP, Oliver WP, Ospanov R, Paley J, Paolone V, Para A, Patzak T, Pavlović Z, Pawloski G, Pearce GF, Peck CW, Peterson EA, Petyt DA, Pittam R, Plunkett RK, Rahaman A, Rameika RA, Raufer TM, Rebel B, Reichenbacher J, Rodrigues PA, Rosenfeld C, Rubin HA, Ruddick K, Ryabov VA, Sanchez MC, Saoulidou N, Schneps J, Schreiner P, Seun SM, Shanahan P, Smart W, Smith C, Sousa A, Speakman B, Stamoulis P, Strait M, Symes P, Tagg N, Talaga RL, Tavera MA, Thomas J, Thompson J, Thomson MA, Thron JL, Tinti G, Trostin I, Tsarev VA, Tzanakos G, Urheim J, Vahle P, Viren B, Ward CP, Ward DR, Watabe M, Weber A, Webb RC, Wehmann A, West N, White C, Wojcicki SG, Wright DM, Yang T, Zois M, Zhang K, and Zwaska R
- Abstract
This Letter reports new results from the MINOS experiment based on a two-year exposure to muon neutrinos from the Fermilab NuMI beam. Our data are consistent with quantum-mechanical oscillations of neutrino flavor with mass splitting |Deltam2| = (2.43+/-0.13) x 10(-3) eV2 (68% C.L.) and mixing angle sin2(2theta) > 0.90 (90% C.L.). Our data disfavor two alternative explanations for the disappearance of neutrinos in flight: namely, neutrino decays into lighter particles and quantum decoherence of neutrinos, at the 3.7 and 5.7 standard-deviation levels, respectively.
- Published
- 2008
- Full Text
- View/download PDF
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