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1. First observations of separated atmospheric nu(mu) and (nu)over-bar(mu) events in the MINOS detector

Author

Adamson, P, Alexopoulos, T, Allison, WWM, Alner, GJ, Anderson, K, Andreopoulos, C, Andrews, M, Andrews, R, Arroyo, C, Avvakumov, S, Ayres, DS, Baller, B, Barish, B, Barker, MA, Barnes, PD, Barr, G, Barrett, WL, Beall, E, Becker, BR, Belias, A, Bergfeld, T, Bernstein, RH, Bhattacharya, D, Bishai, M, Blake, A, Bocean, V, Bock, B, Bock, GJ, Boehm, J, Boehnlein, DJ, Bogert, D, Border, PM, Bower, C, Boyd, S, Buckley-Geer, E, Byon-Wagner, A, Cabrera, A, Chapman, JD, Chase, TR, Chernichenko, SK, Childress, S, Choudhary, BC, Cobb, JH, Cossairt, JD, Courant, H, Crane, DA, Culling, AJ, Dawson, JW, DeMuth, DM, De Santo, A, Dierckxsens, M, Diwan, MV, Dorman, M, Drake, G, Ducar, R, Durkin, T, Erwin, AR, Escobar, CO, Evans, J, Fackler, OD, Harris, EF, Feldman, GJ, Felt, N, Fields, TH, Ford, R, Frohne, MV, Gallagher, HR, Gebhard, M, Godley, A, Gogos, J, Goodman, MC, Gornushkin, Y, Gouffon, P, Grashorn, E, Grossman, N, Grudzinski, JJ, Grzelak, K, Guarino, V, Habig, A, Halsall, R, Hanson, J, Harris, D, Harris, PG, Hartnell, J, Hartouni, EP, Hatcher, R, Heller, K, Hill, N, Ho, Y, Howcroft, C, Hylen, J, Ignatenko, M, Indurthy, D, Irwin, GM, James, C, Jenner, L, Jensen, D, Joffe-Minor, T, Kafka, T, Kang, HJ, Kasahara, SMS, Kilmer, J, Kim, H, Koizumi, G, Kopp, S, Kordosky, M, Koskinen, DJ, Kostin, M, Krakauer, DA, Kumaratunga, S, Ladran, AS, Lang, K, Laughton, C, Lebedev, A, Lee, R, Lee, WY, Libkind, MA, Liu, J, Litchfield, PJ, Litchfield, RP, Longley, NP, Lucas, P, Luebke, W, Madani, S, Maher, E, Makeev, V, Mann, WA, Marchionni, A, Marino, AD, Marshak, ML, Marshall, JS, McDonald, J, McGowan, A, Meier, JR, Merzon, GI, Messier, MD, Michael, DG, Milburn, RH, Miller, JL, Miller, WH, Mishra, SR, Miyagawa, PS, Moore, C, Morfin, J, Morse, R, Mualem, L, Mufson, S, Murgia, S, Murtagh, MJ, Musser, J, Naples, D, Nelson, C, Nelson, JK, Newman, HB, Nezrick, F, Nichol, RJ, Nicholls, TC, Ochoa-Ricoux, JP, Oliver, J, Oliver, WP, Onuchin, VA, Osiecki, T, Ospanov, R, Paley, J, Paolone, V, Para, A, Patzak, T, Pavlovich, Z, Pearce, GF, Pearson, N, Peck, CW, Perry, C, Peterson, EA, Petyt, DA, Ping, H, Piteira, R, Pla-Dalmau, A, Plunkett, RK, Price, LE, Proga, M, Pushka, DR, Rahman, D, Rameika, RA, Raufer, TM, Read, AL, Rebel, B, Reyna, DE, Rosenfeld, C, Rubin, HA, Ruddick, K, Ryabov, VA, Saakyan, R, Sanchez, MC, Saoulidou, N, Schneps, J, Schoessow, PV, Schreiner, P, Schwienhorst, R, Semenov, VK, Seun, SM, Shanahan, P, Shield, PD, Smart, W, Smirnitsky, V, Smith, C, Smith, PN, Sousa, A, Speakman, B, Stamoulis, P, Stefanik, A, Sullivan, P, Swan, JM, Symes, PA, Tagg, N, Talaga, RL, Tetteh-Lartey, E, Thomas, J, Thompson, J, Thomson, MA, Thron, JL, Trendler, R, Trevor, J, Trostin, I, Tsarev, VA, Tzanakos, G, Urheim, J, Vahle, P, Vakili, M, Vaziri, K, Velissaris, C, Verebryusov, V, Viren, B, Wai, L, Ward, CP, Ward, DR, Watabe, M, Weber, A, Webb, RC, Wehmann, A, West, N, White, C, White, RF, Wojcicki, SG, Wright, DM, Wu, QK, Yan, WG, Yang, T, Yumiceva, FX, Yun, JC, Zheng, H, Zois, M, Zwaska, R, and Collaboration, MMINOS

Published
2006

2. First observations of separated atmospheric νμ and ν̄μ events in the MINOS detector

Author

Adamson, P, Alexopoulos, T, Allison, WWM, Alner, GJ, Anderson, K, Andreopoulos, C, Andrews, M, Andrews, R, Arroyo, C, Avvakumov, S, Ayres, DS, Baller, B, Barish, B, Barker, MA, Barnes Jr, PD, Barr, G, Barrett, WL, Beall, E, Becker, BR, Belias, A, Bergfeld, T, Bernstein, RH, Bhattacharya, D, Bishai, M, Blake, A, Bocean, V, Bock, B, Bock, GJ, Boehm, J, Boehnlein, DJ, Bogert, D, Border, PM, Bower, C, Boyd, S, Buckley-Geer, E, Byon-Wagner, A, Cabrera, A, Chapman, JD, Chase, TR, Chernichenko, SK, Childress, S, Choudhary, BC, Cobb, JH, Cossairt, JD, Courant, H, Crane, DA, Culling, AJ, Dawson, JW, DeMuth, DM, De Santo, A, Dierckxsens, M, Diwan, MV, Dorman, M, Drake, G, Ducar, R, Durkin, T, Erwin, AR, Escobar, CO, Evans, J, Fackler, OD, Harris, EF, Feldman, GJ, Felt, N, Fields, TH, Ford, R, Frohne, MV, Gallagher, HR, Gebhard, M, Godley, A, Gogos, J, Goodman, MC, Gornushkin, Y, Gouffon, P, Grashorn, E, Grossman, N, Grudzinski, JJ, Grzelak, K, Guarino, V, Habig, A, Halsall, R, Hanson, J, Harris, D, Harris, PG, Hartnell, J, Hartouni, EP, Hatcher, R, Heller, K, Hill, N, Ho, Y, Howcroft, C, Hylen, J, Ignatenko, M, Indurthy, D, Irwin, GM, James, C, Jenner, L, Jensen, D, Joffe-Minor, T, Kafka, T, Kang, HJ, Kasahara, SMS, Kilmer, J, Kim, H, Koizumi, G, Kopp, S, Kordosky, M, Koskinen, DJ, Kostin, M, Krakauer, DA, Kumaratunga, S, Ladran, AS, Lang, K, Laughton, C, Lebedev, A, Lee, R, Lee, WY, Libkind, MA, Liu, J, Litchfield, PJ, Litchfield, RP, Longley, NP, Lucas, P, Luebke, W, Madani, S, Maher, E, Makeev, V, Mann, WA, Marchionni, A, Marino, AD, Marshak, ML, Marshall, JS, McDonald, J, McGowan, A, Meier, JR, Merzon, GI, Messier, MD, Michael, DG, Milburn, RH, Miller, JL, Miller, WH, Mishra, SR, Miyagawa, PS, Moore, C, Morfín, J, Morse, R, Mualem, L, Mufson, S, Murgia, S, Murtagh, MJ, Musser, J, Naples, D, Nelson, C, Nelson, JK, Newman, HB, Nezrick, F, Nichol, RJ, Nicholls, TC, Ochoa-Ricoux, JP, Oliver, J, Oliver, WP, Onuchin, VA, Osiecki, T, Ospanov, R, Paley, J, Paolone, V, Para, A, Patzak, T, Pavlovich, Z, Pearce, GF, Pearson, N, Peck, CW, Perry, C, Peterson, EA, Petyt, DA, Ping, H, Piteira, R, Pla-Dalmau, A, Plunkett, RK, Price, LE, Proga, M, Pushka, DR, Rahman, D, Rameika, RA, Raufer, TM, Read, AL, Rebel, B, Reyna, DE, Rosenfeld, C, Rubin, HA, Ruddick, K, Ryabov, VA, Saakyan, R, Sanchez, MC, Saoulidou, N, Schneps, J, Schoessow, PV, Schreiner, P, Schwienhorst, R, Semenov, VK, Seun, S-M, Shanahan, P, Shield, PD, Smart, W, Smirnitsky, V, Smith, C, Smith, PN, Sousa, A, Speakman, B, Stamoulis, P, Stefanik, A, Sullivan, P, Swan, JM, Symes, PA, Tagg, N, Talaga, RL, Tetteh-Lartey, E, Thomas, J, Thompson, J, Thomson, MA, Thron, JL, Trendler, R, Trevor, J, Trostin, I, Tsarev, VA, Tzanakos, G, Urheim, J, Vahle, P, Vakili, M, Vaziri, K, Velissaris, C, Verebryusov, V, Viren, B, Wai, L, Ward, CP, Ward, DR, Watabe, M, Weber, A, Webb, RC, Wehmann, A, West, N, White, C, White, RF, Wojcicki, SG, Wright, DM, Wu, QK, Yan, WG, Yang, T, Yumiceva, FX, Yun, JC, Zheng, H, Zois, M, and Zwaska, R

Abstract

The complete 5.4 kton MINOS far detector has been taking data since the beginning of August 2003 at a depth of 2070 meters water-equivalent in the Soudan mine, Minnesota. This paper presents the first MINOS observations of νμ and ν̄μ charged-current atmospheric neutrino interactions based on an exposure of 418 days. The ratio of upward- to downward-going events in the data is compared to the Monte Carlo expectation in the absence of neutrino oscillations, giving Rup/downdata/Rup/downMC=0.62-0.14+0.19(stat.) ±0.02(sys.). An extended maximum likelihood analysis of the observed L/E distributions excludes the null hypothesis of no neutrino oscillations at the 98% confidence level. Using the curvature of the observed muons in the 1.3 T MINOS magnetic field νμ and ν̄μ interactions are separated. The ratio of ν̄μ to νμ events in the data is compared to the Monte Carlo expectation assuming neutrinos and antineutrinos oscillate in the same manner, giving Rν̄μ/νμdata/Rν̄μ/νμMC=0.96-0. 27+0.38(stat.)±0.15(sys.), where the errors are the statistical and systematic uncertainties. Although the statistics are limited, this is the first direct observation of atmospheric neutrino interactions separately for νμ and ν̄μ. © 2006 The American Physical Society.

Published
2006

3. First observations of separated atmospheric nu(mu) and (nu)over-bar(mu) events in the MINOS detector

Author

Adamson, P Alexopoulos, T Allison, WWM Alner, GJ and Anderson, K Andreopoulos, C Andrews, M Andrews, R and Arroyo, C Avvakumov, S Ayres, DS Baller, B Barish, B and Barker, MA Barnes, PD Barr, G Barrett, WL Beall, E and Becker, BR Belias, A Bergfeld, T Bernstein, RH and Bhattacharya, D Bishai, M Blake, A Bocean, V Bock, B and Bock, GJ Boehm, J Boehnlein, DJ Bogert, D Border, PM and Bower, C Boyd, S Buckley-Geer, E Byon-Wagner, A Cabrera, A Chapman, JD Chase, TR Chernichenko, SK Childress, S and Choudhary, BC Cobb, JH Cossairt, JD Courant, H and Crane, DA Culling, AJ Dawson, JW DeMuth, DM De Santo, A and Dierckxsens, M Diwan, MV Dorman, M Drake, G Ducar, R and Durkin, T Erwin, AR Escobar, CO Evans, J Fackler, OD and Harris, EF Feldman, GJ Felt, N Fields, TH Ford, R and Frohne, MV Gallagher, HR Gebhard, M Godley, A Gogos, J Goodman, MC Gornushkin, Y Gouffon, P Grashorn, E and Grossman, N Grudzinski, JJ Grzelak, K Guarino, V Habig, A Halsall, R Hanson, J Harris, D Harris, PG and Hartnell, J Hartouni, EP Hatcher, R Heller, K Hill, N and Ho, Y Howcroft, C Hylen, J Ignatenko, M Indurthy, D and Irwin, GM James, C Jenner, L Jensen, D Joffe-Minor, T Kafka, T Kang, HJ Kasahara, SMS Kilmer, J Kim, H and Koizumi, G Kopp, S Kordosky, M Koskinen, DJ Kostin, M Krakauer, DA Kumaratunga, S Ladran, AS Lang, K and Laughton, C Lebedev, A Lee, R Lee, WY Libkind, MA and Liu, J Litchfield, PJ Litchfield, RP Longley, NP Lucas, P Luebke, W Madani, S Maher, E Makeev, V Mann, WA and Marchionni, A Marino, AD Marshak, ML Marshall, JS and McDonald, J McGowan, A Meier, JR Merzon, GI Messier, MD and Michael, DG Milburn, RH Miller, JL Miller, WH and Mishra, SR Miyagawa, PS Moore, C Morfin, J Morse, R and Mualem, L Mufson, S Murgia, S Murtagh, MJ Musser, J and Naples, D Nelson, C Nelson, JK Newman, HB Nezrick, F and Nichol, RJ Nicholls, TC Ochoa-Ricoux, JP Oliver, J and Oliver, WP Onuchin, VA Osiecki, T Ospanov, R Paley, J and Paolone, V Para, A Patzak, T Pavlovich, Z Pearce, GF and Pearson, N Peck, CW Perry, C Peterson, EA Petyt, DA and Ping, H Piteira, R Pla-Dalmau, A Plunkett, RK Price, LE Proga, M Pushka, DR Rahman, D Rameika, RA Raufer, TM Read, AL Rebel, B Reyna, DE Rosenfeld, C Rubin, HA Ruddick, K Ryabov, VA Saakyan, R Sanchez, MC and Saoulidou, N Schneps, J Schoessow, PV Schreiner, P and Schwienhorst, R Semenov, VK Seun, SM Shanahan, P Shield, PD Smart, W Smirnitsky, V Smith, C Smith, PN Sousa, A Speakman, B Stamoulis, P Stefanik, A Sullivan, P and Swan, JM Symes, PA Tagg, N Talaga, RL Tetteh-Lartey, E and Thomas, J Thompson, J Thomson, MA Thron, JL and Trendler, R Trevor, J Trostin, I Tsarev, VA Tzanakos, G and Urheim, J Vahle, P Vakili, M Vaziri, K Velissaris, C and Verebryusov, V Viren, B Wai, L Ward, CP Ward, DR and Watabe, M Weber, A Webb, RC Wehmann, A West, N and White, C White, RF Wojcicki, SG Wright, DM Wu, QK and Yan, WG Yang, T Yumiceva, FX Yun, JC Zheng, H Zois, M Zwaska, R MMINOS Collaboration

Subjects
Physics::Instrumentation and Detectors, High Energy Physics::Experiment
Abstract

The complete 5.4 kton MINOS far detector has been taking data since the beginning of August 2003 at a depth of 2070 meters water-equivalent in the Soudan mine, Minnesota. This paper presents the first MINOS observations of nu(mu) and (nu) over bar (mu) charged-current atmospheric neutrino interactions based on an exposure of 418 days. The ratio of upward- to downward-going events in the data is compared to the Monte Carlo expectation in the absence of neutrino oscillations, giving R-up/down(data)/R-up/down(MC)=0.62(-0.14)(+0.19)(stat.)+/- 0.02(sys.). An extended maximum likelihood analysis of the observed L/E distributions excludes the null hypothesis of no neutrino oscillations at the 98% confidence level. Using the curvature of the observed muons in the 1.3 T MINOS magnetic field nu(mu) and (nu) over bar (mu) interactions are separated. The ratio of (nu) over bar (mu) to nu(mu) events in the data is compared to the Monte Carlo expectation assuming neutrinos and antineutrinos oscillate in the same manner, giving R-(nu) over bar mu/nu(data)(mu)/R-(nu) over bar mu/nu(MC)(mu)=0.96(-0.27)(+0.38)(stat.)+/- 0.15(sys.), where the errors are the statistical and systematic uncertainties. Although the statistics are limited, this is the first direct observation of atmospheric neutrino interactions separately for nu(mu) and (nu) over bar (mu).

Published
2006

4. Observation of muon neutrino disappearance with the MINOS detectors in the NuMI neutrino beam.

Author

Michael DG, Adamson P, Alexopoulos T, Allison WW, Alner GJ, Anderson K, Andreopoulos C, Andrews M, Andrews R, Arms KE, Armstrong R, Arroyo C, Auty DJ, Avvakumov S, Ayres DS, Baller B, Barish B, Barker MA, Barnes PD Jr, Barr G, Barrett WL, Beall E, Becker BR, Belias A, Bergfeld T, Bernstein RH, Bhattacharya D, Bishai M, Blake A, Bocean V, Bock B, Bock GJ, Boehm J, Boehnlein DJ, Bogert D, Border PM, Bower C, Boyd S, Buckley-Geer E, Bungau C, Byon-Wagner A, Cabrera A, Chapman JD, Chase TR, Cherdack D, Chernichenko SK, Childress S, Choudhary BC, Cobb JH, Cossairt JD, Courant H, Crane DA, Culling AJ, Dawson JW, de Jong JK, DeMuth DM, De Santo A, Dierckxsens M, Diwan MV, Dorman M, Drake G, Drakoulakos D, Ducar R, Durkin T, Erwin AR, Escobar CO, Evans JJ, Fackler OD, Falk Harris E, Feldman GJ, Felt N, Fields TH, Ford R, Frohne MV, Gallagher HR, Gebhard M, Giurgiu GA, Godley A, Gogos J, Goodman MC, Gornushkin Y, Gouffon P, Gran R, Grashorn E, Grossman N, Grudzinski JJ, Grzelak K, Guarino V, Habig A, Halsall R, Hanson J, Harris D, Harris PG, Hartnell J, Hartouni EP, Hatcher R, Heller K, Hill N, Ho Y, Holin A, Howcroft C, Hylen J, Ignatenko M, Indurthy D, Irwin GM, Ishitsuka M, Jaffe DE, James C, Jenner L, Jensen D, Joffe-Minor T, Kafka T, Kang HJ, Kasahara SM, Kilmer J, Kim H, Kim MS, Koizumi G, Kopp S, Kordosky M, Koskinen DJ, Kostin M, Kotelnikov SK, Krakauer DA, Kreymer A, Kumaratunga S, Ladran AS, Lang K, Laughton C, Lebedev A, Lee R, Lee WY, Libkind MA, Ling J, Liu J, Litchfield PJ, Litchfield RP, Longley NP, Lucas P, Luebke W, Madani S, Maher E, Makeev V, Mann WA, Marchionni A, Marino AD, Marshak ML, Marshall JS, Mayer N, McDonald J, McGowan AM, Meier JR, Merzon GI, Messier MD, Milburn RH, Miller JL, Miller WH, Mishra SR, Mislivec A, Miyagawa PS, Moore CD, Morfín J, Morse R, Mualem L, Mufson S, Murgia S, Murtagh MJ, Musser J, Naples D, Nelson C, Nelson JK, Newman HB, Nezrick F, Nichol RJ, Nicholls TC, Ochoa-Ricoux JP, Oliver J, Oliver WP, Onuchin VA, Osiecki T, Ospanov R, Paley J, Paolone V, Para A, Patzak T, Pavlović Z, Pearce GF, Pearson N, Peck CW, Perry C, Peterson EA, Petyt DA, Ping H, Piteira R, Pittam R, Pla-Dalmau A, Plunkett RK, Price LE, Proga M, Pushka DR, Rahman D, Rameika RA, Raufer TM, Read AL, Rebel B, Reichenbacher J, Reyna DE, Rosenfeld C, Rubin HA, Ruddick K, Ryabov VA, Saakyan R, Sanchez MC, Saoulidou N, Schneps J, Schoessow PV, Schreiner P, Schwienhorst R, Semenov VK, Seun SM, Shanahan P, Shield PD, Smart W, Smirnitsky V, Smith C, Smith PN, Sousa A, Speakman B, Stamoulis P, Stefanik A, Sullivan P, Swan JM, Symes PA, Tagg N, Talaga RL, Terekhov A, Tetteh-Lartey E, Thomas J, Thompson J, Thomson MA, Thron JL, Tinti G, Trendler R, Trevor J, Trostin I, Tsarev VA, Tzanakos G, Urheim J, Vahle P, Vakili M, Vaziri K, Velissaris C, Verebryusov V, Viren B, Wai L, Ward CP, Ward DR, Watabe M, Weber A, Webb RC, Wehmann A, West N, White C, White RF, Wojcicki SG, Wright DM, Wu QK, Yan WG, Yang T, Yumiceva FX, Yun JC, Zheng H, Zois M, and Zwaska R

Abstract

This Letter reports results from the MINOS experiment based on its initial exposure to neutrinos from the Fermilab NuMI beam. The rates and energy spectra of charged current nu(mu) interactions are compared in two detectors located along the beam axis at distances of 1 and 735 km. With 1.27 x 10(20) 120 GeV protons incident on the NuMI target, 215 events with energies below 30 GeV are observed at the Far Detector, compared to an expectation of 336+/-14 events. The data are consistent with nu(mu) disappearance via oscillations with |Delta(m)2/32|=2.74 +0.44/-0.26 x10(-3)eV(2) and sin(2)(2theta(23))>0.87 (68% C.L.).

Published
2006
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