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Insertion of STC into TRT at the Department of Physics, Oxford
Credit: CERN

Professor Dr.rer.nat. Dipl.Phys. Alfons Weber FInstP, MA Ox

Visiting Professor

Research theme

  • Fundamental particles and interactions

Sub department

  • Particle Physics

Research groups

  • Accelerator Neutrinos
Alfons.Weber@physics.ox.ac.uk
Telephone: +49 (6131) 39 24175
Denys Wilkinson Building
AlfonsWeber@JGUMainz
  • About
  • Research
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  • Publications

Measurement of the atmospheric muon charge ratio at TeV energies with the MINOS detector

Physical Review D - Particles, Fields, Gravitation and Cosmology 76:5 (2007)

Authors:

P Adamson, C Andreopoulos, KE Arms, R Armstrong, DJ Auty, S Avvakumov, DS Ayres, B Baller, B Barish, PD Barnes, G Barr, WL Barrett, E Beall, BR Becker, A Belias, T Bergfeld, RH Bernstein, D Bhattacharya, M Bishai, A Blake, B Bock, GJ Bock, J Boehm, DJ Boehnlein, D Bogert, PM Border, C Bower, E Buckley-Geer, C Bungau, A Cabrera, JD Chapman, D Cherdack, S Childress, BC Choudhary, JH Cobb, AJ Culling, JK De Jong, A De Santo, M Dierckxsens, MV Diwan, M Dorman, D Drakoulakos, T Durkin, AR Erwin, CO Escobar, JJ Evans, EF Harris, GJ Feldman, TH Fields, R Ford, MV Frohne, HR Gallagher, GA Giurgiu, A Godley, J Gogos, MC Goodman, P Gouffon, R Gran, EW Grashorn, N Grossman, K Grzelak, A Habig, D Harris, PG Harris, J Hartnell, EP Hartouni, R Hatcher, K Heller, A Holin, C Howcroft, J Hylen, D Indurthy, GM Irwin, M Ishitsuka, DE Jaffe, C James, L Jenner, D Jensen, T Joffe-Minor, T Kafka, HJ Kang, SMS Kasahara, MS Kim, G Koizumi, S Kopp, M Kordosky, DJ Koskinen, SK Kotelnikov, A Kreymer, S Kumaratunga, K Lang, A Lebedev, R Lee, J Ling, J Liu, PJ Litchfield, RP Litchfield, P Lucas, WA Mann, A Marchionni

Abstract:

The 5.4 kton MINOS far detector has been taking charge-separated cosmic ray muon data since the beginning of August, 2003 at a depth of 207 m.w.e. in the Soudan Underground Laboratory, Minnesota, USA. The data with both forward and reversed magnetic field running configurations were combined to minimize systematic errors in the determination of the underground muon charge ratio. When averaged, two independent analyses find the charge ratio underground to be Nμ+/Nμ-=1.374±0.004(stat)-0.010+0.012(sys). Using the map of the Soudan rock overburden, the muon momenta as measured underground were projected to the corresponding values at the surface in the energy range 1-7 TeV. Within this range of energies at the surface, the MINOS data are consistent with the charge ratio being energy independent at the 2 standard deviation level. When the MINOS results are compared with measurements at lower energies, a clear rise in the charge ratio in the energy range 0.3-1.0 TeV is apparent. A qualitative model shows that the rise is consistent with an increasing contribution of kaon decays to the muon charge ratio. © 2007 The American Physical Society.
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Publisher’s Note: First cross-correlation analysis of interferometric and resonant-bar gravitational-wave data for stochastic backgrounds [Phys. Rev. DPRVDAQ0556-2821 76, 022001 (2007)]

Physical Review D American Physical Society (APS) 76:2 (2007) 029905

Authors:

B Abbott, R Abbott, R Adhikari, J Agresti, P Ajith, B Allen, R Amin, SB Anderson, WG Anderson, M Arain, M Araya, H Armandula, M Ashley, S Aston, P Aufmuth, C Aulbert, S Babak, S Ballmer, H Bantilan, BC Barish, C Barker, D Barker, B Barr, P Barriga, MA Barton, K Bayer, K Belczynski, J Betzwieser, PT Beyersdorf, B Bhawal, IA Bilenko, G Billingsley, R Biswas, E Black, K Blackburn, L Blackburn, D Blair, B Bland, J Bogenstahl, L Bogue, R Bork, V Boschi, S Bose, PR Brady, VB Braginsky, JE Brau, M Brinkmann, A Brooks, DA Brown, A Bullington, A Bunkowski, A Buonanno, M Burgamy, O Burmeister, D Busby, RL Byer, L Cadonati, G Cagnoli, JB Camp, J Cannizzo, K Cannon, CA Cantley, J Cao, L Cardenas, MM Casey, G Castaldi, C Cepeda, E Chalkey, P Charlton, S Chatterji, S Chelkowski, Y Chen, F Chiadini, D Chin, E Chin, J Chow, N Christensen, J Clark, P Cochrane, T Cokelaer, CN Colacino, R Coldwell, R Conte, D Cook, T Corbitt, D Coward, D Coyne, JDE Creighton, TD Creighton, RP Croce, DRM Crooks, AM Cruise, A Cumming, J Dalrymple, E D’Ambrosio, K Danzmann, G Davies, D DeBra, J Degallaix, M Degree, T Demma, V Dergachev, S Desai, R DeSalvo, S Dhurandhar, M Diaz, J Dickson, A Di Credico, G Diederichs, A Dietz, EE Doomes, RWP Drever, J-C Dumas, RJ Dupuis, JG Dwyer, P Ehrens, E Espinoza, T Etzel, M Evans, T Evans, S Fairhurst, Y Fan, D Fazi, MM Fejer, LS Finn, V Fiumara, N Fotopoulos, A Franzen, KY Franzen, A Freise, R Frey, T Fricke, P Fritschel, VV Frolov, M Fyffe, V Galdi, J Garofoli, I Gholami, JA Giaime, S Giampanis, KD Giardina, K Goda, E Goetz, L Goggin, G Gonzalez, S Gossler, A Grant, S Gras, C Gray, M Gray, J Greenhalgh, AM Gretarsson, R Grosso, H Grote, S Grunewald, M Guenther, R Gustafson, B Hage, WO Hamilton, D Hammer, C Hanna, J Hanson, J Harms, G Harry, E Harstad, T Hayler, J Heefner, IS Heng, A Heptonstall, M Heurs, M Hewitson, S Hild, E Hirose, D Hoak, D Hosken, J Hough, E Howell, D Hoyland, SH Huttner, D Ingram, E Innerhofer, M Ito, Y Itoh, A Ivanov, D Jackrel, B Johnson, WW Johnson, DI Jones, G Jones, R Jones, L Ju, P Kalmus, V Kalogera, D Kasprzyk, E Katsavounidis, K Kawabe, S Kawamura, F Kawazoe, W Kells, DG Keppel, F Ya Khalili, C Kim, P King, JS Kissel, S Klimenko, K Kokeyama, V Kondrashov, RK Kopparapu, D Kozak, B Krishnan, P Kwee, PK Lam, M Landry, B Lantz, A Lazzarini, B Lee, M Lei, J Leiner, V Leonhardt, I Leonor, K Libbrecht, P Lindquist, NA Lockerbie, M Longo, M Lormand, M Lubinski, H Luck, B Machenschalk, M MacInnis, M Mageswaran, K Mailand, M Malec, V Mandic, S Marano, S Marka, J Markowitz, E Maros, I Martin, JN Marx, K Mason, L Matone, V Matta, N Mavalvala, R McCarthy, BJ McCaulley, DE McClelland, SC McGuire, M McHugh, K McKenzie, JWC McNabb, S McWilliams, T Meier, A Melissinos, G Mendell, RA Mercer, S Meshkov, E Messaritaki, CJ Messenger, D Meyers, E Mikhailov, P Miller, S Mitra, VP Mitrofanov, G Mitselmakher, R Mittleman, O Miyakawa, S Mohanty, V Moody, G Moreno, K Mossavi, C MowLowry, A Moylan, D Mudge, G Mueller, S Mukherjee, H Muller-Ebhardt, J Munch, P Murray, E Myers, J Myers, T Nash, G Newton, A Nishizawa, K Numata, B O’Reilly, R O’Shaughnessy, DJ Ottaway, H Overmier, BJ Owen, H-J Paik, Y Pan, MA Papa, V Parameshwaraiah, P Patel, M Pedraza, S Penn, V Pierro, IM Pinto, M Pitkin, H Pletsch, MV Plissi, F Postiglione, R Prix, V Quetschke, F Raab, D Rabeling, H Radkins, R Rahkola, N Rainer, M Rakhmanov, M Ramsuder, K Rawlins, S Ray-Majumder, V Re, H Rehbein, S Reid, DH Reitze, L Ribichini, R Riesen, K Riles, B Rivera, NA Robertson, C Robinson, EL Robinson, S Roddy, A Rodriguez, AM Rogan, J Rollins, JD Romano, J Romie, R Route, S Rowan, A Rudiger, L Ruet, P Russell, K Ryan, S Sakata, M Samidi, L Sancho de la Jordana, V Sandberg, V Sannibale, S Saraf, P Sarin, BS Sathyaprakash, S Sato, PR Saulson, R Savage, P Savov, S Schediwy, R Schilling, R Schnabel, R Schofield, BF Schutz, P Schwinberg, SM Scott, AC Searle, B Sears, F Seifert, D Sellers, AS Sengupta, P Shawhan, DH Shoemaker, A Sibley, JA Sidles, X Siemens, D Sigg, S Sinha, AM Sintes, BJJ Slagmolen, J Slutsky, JR Smith, MR Smith, K Somiya, KA Strain, DM Strom, A Stuver, TZ Summerscales, K-X Sun, M Sung, PJ Sutton, H Takahashi, DB Tanner, M Tarallo, R Taylor, R Taylor, J Thacker, KA Thorne, KS Thorne, A Thuring, KV Tokmakov, C Torres, C Torrie, G Traylor, M Trias, W Tyler, D Ugolini, C Ungarelli, K Urbanek, H Vahlbruch, M Vallisneri, C Van Den Broeck, M Varvella, S Vass, A Vecchio, J Veitch, P Veitch, A Villar, C Vorvick, SP Vyachanin, SJ Waldman, L Wallace, H Ward, R Ward, K Watts, J Weaver, D Webber, A Weber, A Weidner, M Weinert, A Weinstein, R Weiss, S Wen, K Wette, JT Whelan, DM Whitbeck, SE Whitcomb, BF Whiting, C Wilkinson, PA Willems, L Williams, B Willke, I Wilmut, W Winkler, CC Wipf, S Wise, AG Wiseman, G Woan, D Woods, R Wooley, J Worden, W Wu, I Yakushin, H Yamamoto, Z Yan, S Yoshida, N Yunes, M Zanolin, J Zhang, L Zhang, P Zhang, C Zhao, N Zotov, M Zucker, H zur Muhlen, J Zweizig
More details from the publisher

Measurement of neutrino velocity with the MINOS detectors and NuMI neutrino beam

ArXiv 0706.0437 (2007)

Authors:

MINOS Collaboration, P Adamson
Details from ArXiV

Measurement of the Atmospheric Muon Charge Ratio at TeV Energies with MINOS

ArXiv 0705.3815 (2007)
Details from ArXiV

Charge-separated atmospheric neutrino-induced muons in the MINOS far detector

Physical Review D - Particles, Fields, Gravitation and Cosmology 75:9 (2007)

Authors:

P Adamson, C Andreopoulos, KE Arms, R Armstrong, DJ Auty, S Avvakumov, DS Ayres, B Baller, B Barish, PD Barnes, G Barr, WL Barrett, E Beall, BR Becker, A Belias, T Bergfeld, RH Bernstein, D Bhattacharya, M Bishai, A Blake, B Bock, GJ Bock, J Boehm, DJ Boehnlein, D Bogert, PM Border, C Bower, E Buckley-Geer, A Cabrera, JD Chapman, D Cherdack, S Childress, BC Choudhary, JH Cobb, AJ Culling, JK De Jong, A De Santo, M Dierckxsens, MV Diwan, M Dorman, D Drakoulakos, T Durkin, AR Erwin, CO Escobar, JJ Evans, EF Harris, GJ Feldman, TH Fields, R Ford, MV Frohne, HR Gallagher, GA Giurgiu, A Godley, J Gogos, MC Goodman, P Gouffon, R Gran, EW Grashorn, N Grossman, K Grzelak, A Habig, D Harris, PG Harris, J Hartnell, EP Hartouni, R Hatcher, K Heller, A Holin, C Howcroft, J Hylen, D Indurthy, GM Irwin, M Ishitsuka, DE Jaffe, C James, L Jenner, D Jensen, T Joffe-Minor, T Kafka, HJ Kang, SMS Kasahara, MS Kim, G Koizumi, S Kopp, M Kordosky, DJ Koskinen, SK Kotelnikov, A Kreymer, S Kumaratunga, K Lang, A Lebedev, R Lee, J Ling, J Liu, PJ Litchfield, RP Litchfield, P Lucas, WA Mann, A Marchionni, AD Marino

Abstract:

We found 140 neutrino-induced muons in 854.24 live days in the MINOS far detector, which has an acceptance for neutrino-induced muons of 6.91×106cm2sr. We looked for evidence of neutrino disappearance in this data set by computing the ratio of the number of low momentum muons to the sum of the number of high momentum and unknown momentum muons for both data and Monte Carlo expectation in the absence of neutrino oscillations. The ratio of data and Monte Carlo ratios, R, is R=0.65-0.12+0.15(stat)±0.09(syst), a result that is consistent with an oscillation signal. A fit to the data for the oscillation parameters sin 22θ23 and Δm232 excludes the null oscillation hypothesis at the 94% confidence level. We separated the muons into μ- and μ+ in both the data and Monte Carlo events and found the ratio of the total number of μ- to μ+ in both samples. The ratio of those ratios, R^CPT, is a test of CPT conservation. The result R^CPT=0.72-0.18+0.24(stat)-0. 04+0.08(syst) is consistent with CPT conservation. © 2007 The American Physical Society.
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