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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
  • Teaching
  • Committees
  • Publications

Observation of electron neutrino appearance in a muon neutrino beam.

Phys Rev Lett 112:6 (2014) 061802

Authors:

K Abe, J Adam, H Aihara, T Akiri, C Andreopoulos, S Aoki, A Ariga, T Ariga, S Assylbekov, D Autiero, M Barbi, GJ Barker, G Barr, M Bass, M Batkiewicz, F Bay, SW Bentham, V Berardi, BE Berger, S Berkman, I Bertram, S Bhadra, FDM Blaszczyk, A Blondel, C Bojechko, S Bordoni, SB Boyd, D Brailsford, A Bravar, C Bronner, N Buchanan, RG Calland, J Caravaca Rodríguez, SL Cartwright, R Castillo, MG Catanesi, A Cervera, D Cherdack, G Christodoulou, A Clifton, J Coleman, SJ Coleman, G Collazuol, K Connolly, L Cremonesi, A Dabrowska, I Danko, R Das, S Davis, P de Perio, G De Rosa, T Dealtry, SR Dennis, C Densham, F Di Lodovico, S Di Luise, O Drapier, T Duboyski, K Duffy, F Dufour, J Dumarchez, S Dytman, M Dziewiecki, S Emery, A Ereditato, L Escudero, AJ Finch, L Floetotto, M Friend, Y Fujii, Y Fukuda, AP Furmanski, V Galymov, A Gaudin, S Giffin, C Giganti, K Gilje, D Goeldi, T Golan, JJ Gomez-Cadenas, M Gonin, N Grant, D Gudin, DR Hadley, A Haesler, MD Haigh, P Hamilton, D Hansen, T Hara, M Hartz, T Hasegawa, NC Hastings, Y Hayato, C Hearty, RL Helmer, M Hierholzer, J Hignight, A Hillairet, A Himmel, T Hiraki, S Hirota, J Holeczek, S Horikawa, K Huang, AK Ichikawa, K Ieki, M Ieva, M Ikeda, J Imber, J Insler, TJ Irvine, T Ishida, T Ishii, SJ Ives, K Iyogi, A Izmaylov, A Jacob, B Jamieson, RA Johnson, JH Jo, P Jonsson, CK Jung, AC Kaboth, T Kajita, H Kakuno, J Kameda, Y Kanazawa, D Karlen, I Karpikov, E Kearns, M Khabibullin, A Khotjantsev, D Kielczewska, T Kikawa, A Kilinski, J Kim, J Kisiel, P Kitching, T Kobayashi, L Koch, A Kolaceke, A Konaka, LL Kormos, A Korzenev, K Koseki, Y Koshio, I Kreslo, W Kropp, H Kubo, Y Kudenko, S Kumaratunga, R Kurjata, T Kutter, J Lagoda, K Laihem, I Lamont, M Laveder, M Lawe, M Lazos, KP Lee, C Licciardi, T Lindner, C Lister, RP Litchfield, A Longhin, L Ludovici, M Macaire, L Magaletti, K Mahn, M Malek, S Manly, AD Marino, J Marteau, JF Martin, T Maruyama, J Marzec, EL Mathie, V Matveev, K Mavrokoridis, E Mazzucato, M McCarthy, N McCauley, KS McFarland, C McGrew, C Metelko, M Mezzetto, P Mijakowski, CA Miller, A Minamino, O Mineev, S Mine, A Missert, M Miura, L Monfregola, S Moriyama, Th A Mueller, A Murakami, M Murdoch, S Murphy, J Myslik, T Nagasaki, T Nakadaira, M Nakahata, T Nakai, K Nakamura, S Nakayama, T Nakaya, K Nakayoshi, D Naples, C Nielsen, M Nirkko, K Nishikawa, Y Nishimura, HM O'Keeffe, R Ohta, K Okumura, T Okusawa, W Oryszczak, SM Oser, RA Owen, Y Oyama, V Palladino, V Paolone, D Payne, GF Pearce, O Perevozchikov, JD Perkin, Y Petrov, LJ Pickard, ES Pinzon Guerra, C Pistillo, P Plonski, E Poplawska, B Popov, M Posiadala, J-M Poutissou, R Poutissou, P Przewlocki, B Quilain, E Radicioni, PN Ratoff, M Ravonel, MAM Rayner, A Redij, M Reeves, E Reinherz-Aronis, F Retiere, A Robert, PA Rodrigues, P Rojas, E Rondio, S Roth, A Rubbia, D Ruterbories, R Sacco, K Sakashita, F Sánchez, F Sato, E Scantamburlo, K Scholberg, J Schwehr, M Scott, Y Seiya, T Sekiguchi, H Sekiya, D Sgalaberna, M Shiozawa, S Short, Y Shustrov, P Sinclair, B Smith, RJ Smith, M Smy, JT Sobczyk, H Sobel, M Sorel, L Southwell, P Stamoulis, J Steinmann, B Still, Y Suda, A Suzuki, K Suzuki, SY Suzuki, Y Suzuki, T Szeglowski, R Tacik, M Tada, S Takahashi, A Takeda, Y Takeuchi, HK Tanaka, HA Tanaka, MM Tanaka, D Terhorst, R Terri, LF Thompson, A Thorley, S Tobayama, W Toki, T Tomura, Y Totsuka, C Touramanis, T Tsukamoto, M Tzanov, Y Uchida, K Ueno, A Vacheret, M Vagins, G Vasseur, T Wachala, AV Waldron, CW Walter, D Wark, MO Wascko, A Weber, R Wendell, RJ Wilkes, MJ Wilking, C Wilkinson, Z Williamson, JR Wilson, RJ Wilson, T Wongjirad, Y Yamada, K Yamamoto, C Yanagisawa, S Yen, N Yershov, M Yokoyama, T Yuan, A Zalewska, J Zalipska, L Zambelli, K Zaremba, M Ziembicki, ED Zimmerman, M Zito, J Zmuda, T2K Collaboration

Abstract:

The T2K experiment has observed electron neutrino appearance in a muon neutrino beam produced 295 km from the Super-Kamiokande detector with a peak energy of 0.6 GeV. A total of 28 electron neutrino events were detected with an energy distribution consistent with an appearance signal, corresponding to a significance of 7.3σ when compared to 4.92±0.55 expected background events. In the Pontecorvo-Maki-Nakagawa-Sakata mixing model, the electron neutrino appearance signal depends on several parameters including three mixing angles θ12, θ23, θ13, a mass difference Δm(32)(2) and a CP violating phase δ(CP). In this neutrino oscillation scenario, assuming |Δm(32)(2)|=2.4×10(-3)  eV(2), sin(2)θ(23)=0.5, and Δm322>0 (Δm(32)(2)<0), a best-fit value of sin(2)2θ(13)=0.140(-0.032)(+0.038) (0.170(-0.037)(+0.045)) is obtained at δ(CP)=0. When combining the result with the current best knowledge of oscillation parameters including the world average value of θ(13) from reactor experiments, some values of δ(CP) are disfavored at the 90% C.L.
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A novel segmented-scintillator antineutrino detector

JOURNAL OF INSTRUMENTATION 12 (2017) ARTN P04024

Authors:

Y Abreu, Y Amhis, L Arnold, G Ban, W Beaumont, M Bongrand, D Boursette, JM Buhour, BC Castle, K Clark, B Coupe, AS Cucoanes, D Cussans, A De Roeck, J D'Hondt, D Durand, M Fallot, S Fresneau, L Ghys, L Giot, B Guillon, G Guilloux, S Ihantola, X Janssen, S Kalcheva, LN Kalousis, E Koonen, M Labare, G Lehaut, J Mermans, I Michiels, C Moortgat, D Newbold, J Park, K Petridis, IA Pinera, G Pommery, L Popescu, G Pronost, J Rademacker, A Reynolds, D Ryckbosch, N Ryder, D Saunders, YA Shitov, M-H Schune, PR Scovell, L Simard, A Vacheret, S Van Dyck, P Van Mulders, N van Remortel, S Vercaemer, A Waldron, A Weber, F Yermia, S Collaboration
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Measument of the Mass and Width of the W boson at LEP

European Physical Journal C 45 (2006) 569-587

Authors:

AJ Weber, P. Achard, O. Adriani, M. Aguilar-Benitze
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CVC AND PCAC IN NEUTRINO LEPTON INTERACTIONS

NUCLEAR PHYSICS B 359:2-3 (1991) 262-282

Authors:

A WEBER, LM SEHGAL
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Spatial and temporal evaluations of the liquid argon purity in ProtoDUNE-SP

Journal of Instrumentation IOP Publishing 20:09 (2025) P09008

Authors:

S Abbaslu, A Abed Abud, R Acciarri, LP Accorsi, MA Acero, MR Adames, G Adamov, M Adamowski, C Adriano, F Akbar, F Alemanno, NS Alex, K Allison, M Alrashed, A Alton, R Alvarez, T Alves, A Aman, H Amar, P Amedo, J Anderson, DA Andrade, C Andreopoulos, M Andreotti, F Azfar

Abstract:

Liquid argon time projection chambers (LArTPCs) rely on highly pure argon to ensure that ionization electrons produced by charged particles reach readout arrays. ProtoDUNE Single-Phase (ProtoDUNE-SP) was an approximately 700-ton liquid argon detector intended to prototype the Deep Underground Neutrino Experiment (DUNE) Far Detector Horizontal Drift module. It contains two drift volumes bisected by the cathode plane assembly, which is biased to create an almost uniform electric field in both volumes. The DUNE Far Detector modules must have robust cryogenic systems capable of filtering argon and supplying the TPC with clean liquid. This paper will explore comparisons of the argon purity measured by the purity monitors with those measured using muons in the TPC from October 2018 to November 2018. A new method is introduced to measure the liquid argon purity in the TPC using muons crossing both drift volumes of ProtoDUNE-SP. For extended periods on the timescale of weeks, the drift electron lifetime was measured to be above 30 ms using both systems. A particular focus will be placed on the measured purity of argon as a function of position in the detector.
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