Author: "Wehmann A" / Topic: physics - Searchworks@Jio Institute Digital Library Search Results

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1. An experimental data-driven mass-spring model of ﬂexible Calliphora wings

Author: Henja Wehmann, Dmitry Kolomenskiy, Hung Truong, Thomas Engels, Kai Schneider, Fritz-Olaf Lehmann, Institut de Mathématiques de Marseille (I2M), Aix Marseille Université (AMU)-École Centrale de Marseille (ECM)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de Météorologie Dynamique (UMR 8539) (LMD), Institut national des sciences de l'Univers (INSU - CNRS)-École polytechnique (X)-École des Ponts ParisTech (ENPC)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Département des Géosciences - ENS Paris, École normale supérieure - Paris (ENS-PSL), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-École normale supérieure - Paris (ENS-PSL), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL), Universität Rostock, Tokyo Institute of Technology [Tokyo] (TITECH), and ANR-15-CE40-0019,AIFIT,Aérodynamique du vol d'insecte en écoulement turbulent(2015)
Subjects: insect flight, Inertial frame of reference, [PHYS.MPHY]Physics [physics]/Mathematical Physics [math-ph], Biophysics, FOS: Physical sciences, Kinematics, Rotation, Biochemistry, [SPI.MECA.MEFL]Engineering Sciences [physics]/Mechanics [physics.med-ph]/Fluids mechanics [physics.class-ph], Physics::Fluid Dynamics, symbols.namesake, FOS: Mathematics, genetic algorithm, Astrophysics::Solar and Stellar Astrophysics, Mathematics - Numerical Analysis, Physics - Biological Physics, Engineering (miscellaneous), Physics, Wing, Deformation (mechanics), Fluid Dynamics (physics.flu-dyn), Reynolds number, Numerical Analysis (math.NA), Physics - Fluid Dynamics, Aerodynamics, Mechanics, mass-spring system, wing flexibility, Aerodynamic force, Biological Physics (physics.bio-ph), symbols, Molecular Medicine, Biotechnology
Abstract: International audience; Insect wings can undergo significant deformation during flapping motion owing to inertial, elastic and aerodynamic forces. Changes in shape then alter aerodynamic forces, resulting in a fully coupled fluid–structure interaction (FSI) problem. Here, we present detailed three-dimensional FSI simulations of deformable blowfly (Calliphora vomitoria) wings in flapping flight. A wing model is proposed using a multi-parameter mass-spring approach, chosen for its implementation simplicity and computational efficiency. We train the model to reproduce static elasticity measurements by optimizing its parameters using a genetic algorithm with covariance matrix adaptation (CMA-ES). Wing models trained with experimental data are then coupled to a high-performance flow solver run on massively parallel supercomputers. Different features of the modeling approach and the intra-species variability of elastic properties are discussed. We found that individuals with different wing stiffness exhibit similar aerodynamic properties characterized by dimensionless forces and power at the same Reynolds number. We further study the influence of wing flexibility by comparing between the flexible wings and their rigid counterparts. Under equal prescribed kinematic conditions for rigid and flexible wings, wing flexibility improves lift-to-drag ratio as well as lift-to-power ratio and reduces peak force observed during wing rotation.
Published: 2021
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2. Análise de um motor-foguete bi-propelente aplicada ao ensino de termodinâmica: um estudo de caso

Author: Oswaldo Barbosa Loureda, Gustavo Farias Serra, Claus Franz Wehmann, Maria Elisa Marciano Martinez, and Marcello Carvalho dos Reis
Subjects: Physics, QC1-999, Termodinâmica, Foguetes, General Physics and Astronomy, Estudo de caso, Aeroespacial, Estudo de Caso, Education
Abstract: The importance of the student’s role in the learning process has been recognized for a long time. Several methodologies have been developed, such as inverted class and project-based teaching, or its less complex variant, case study-based teaching. Thermodynamics and fluid mechanics are some of the most complex disciplines taught in physics and engineering. Among its main difficulties for students, are the terminology and concepts little connected to everyday life, in addition to the need for an analysis, there is a need for connection between several of these concepts and a more complex mathematics than that found in Newtonian mechanics. The case study is considered by several authors to be a variant of teaching based on projects that are simpler to be implemented and accepted by students. In this work, a case study is carried out on the thermodynamic relationships of a bi-propellant rocket engine aimed at engineering students. From a simplified model of the engine, a mathematical modeling is done using the first law of thermodynamics and its implications. To perform the mathematical calculations from the analysis, an engine is considered whose propellant and fuel are liquid oxygen and liquid hydrogen (LOX / LH2), respectively. This case study is in line with The setting of the case can be made considering the various news about space exploration of projects in India, China or the so-called new space. A importância do protagonismo do aluno no processo de aprendizagem é reconhecida há bastante tempo. Diversas metodologias têm sido desenvolvidas, como sala invertida e o ensino baseado em projeto, ou sua variante menos complexa o ensino baseado em estudo de caso. A termodinâmica e a mecânica dos fluidos são algumas das mais complexas disciplinas ensinadas na física e engenharias. Dentre suas principais dificuldades para os alunos, são a terminologia e os conceitos pouco conectados ao cotidiano, além da necessidade de em uma analise, haver a necessidade de conexão entre vários destes conceitos e uma matemática mais complexa que a encontrada na mecânica newtoniana. O estudo de caso é considerado por vários autores uma variante do ensino baseado em projetos mais simples de ser implementado e aceito pelos estudantes. Neste trabalho é realizado um estudo de caso sobre as relações termodinâmicas de um motor-foguete bi-propelente direcionada aos alunos de engenharia. A partir de um modelo simplificado do motor, uma modelagem matemática é feita utilizando a primeira lei da termodinâmica e suas implicações. Para a realização dos cálculos matemáticos a partir da análise, é considerado um motor cujo propelente e combustível são oxigênio líquido e hidrogênio líquido (LOX/LH2), respectivamente. Este estudo de caso está em sintonia com as diversas notícias sobre exploração espacial dos projetos da Índia, China ou do chamado new space.
Published: 2020
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3. InGaAs quantum wires and wells on V-grooved InP substrates

Author: Schrimpf, T., Bonsch, P., Wullner, D., Wehmann, H.-H., Schlachetzki, A., Bertram, F., Riemann, T., and Christen, J.
Subjects: Gallium arsenide semiconductors -- Research, Quantum wells -- Research, Thin films -- Research, Physics
Abstract: Metalorganic vapor phase epitaxy was used in fabricating In(sub 1-x)GaxAs quantum structures on v-grooved InP substrates. Scanning-electron and atomic-force microscopic methods were then used in studying the shape of the quantum wells while photoluminescence spectroscopy was used in examining the optical properties. Results indicate that sidewall QWLs are rich in In and have a Ga content of 29% while QWRs are nearly lattice-matched but have higher Ga content.
Published: 1999

4. Diffusion during metalorganic vapor-phase epitaxy on V-groove patterned substrates

Author: Wullner, D., Chahoud, M., Schrimpf, T., Bonsch, P., Wehmann, H.-H., and Schlachetzki, A.
Subjects: Epitaxy -- Research, Organometallic compounds -- Research, Gallium -- Research, Atomic force microscopy -- Usage, Photoluminescence -- Usage, Physics
Abstract: A study was conducted to analyze the diffusion process associated with the metalorganic vapor-phase epitaxy of InGaAs on V-groove patterned InP substrates. The growth rate and composition of the ternary alloy was were determined by atomic force microscopy and photoluminescence measurements. Experimental results indicated that compositional variations resulted from the reduced solidifying probability of gallium on (111) a planes.
Published: 1999

5. Orientation-dependent growth of InGaAs/InP for applications in laser-diode arrays

Author: Zwinge, G., Wehmann, H.-H., Schlachetzki, A., and Hsu, C.C.
Subjects: Diodes, Laser -- Analysis, Indium -- Research, Gallium arsenide semiconductors -- Research, Crystals -- Growth, Physics
Abstract: The orientation of crystals influences the growth by metal organic vapor-phase epitaxy. The study of the crystal orientation growth involves the analysis of InP and InGaAs on patterned InP patterns. Structured InP substrates are found in the (001) and (111) orientation during different growth rates. There is also an absence of growth in extreme cases of orientation of crystals.
Published: 1993

6. Three-dimensional wing structure attenuates aerodynamic efficiency in flapping fly wings

Author: Fritz-Olaf Lehmann, Henja-Niniane Wehmann, and Thomas Engels
Subjects: Insecta, Biomedical Engineering, Biophysics, Bioengineering, Models, Biological, Biochemistry, Insect flight, Biomaterials, symbols.namesake, Camber (aerodynamics), Animals, Wings, Animal, Physics, Wing, Diptera, Reynolds number, Life Sciences–Physics interface, X-Ray Microtomography, Aerodynamics, Mechanics, Biomechanical Phenomena, Vortex, Aerodynamic force, Flight, Animal, symbols, Flapping, Biotechnology
Abstract: The aerial performance of flying insects ultimately depends on how flapping wings interact with the surrounding air. It has previously been suggested that the wing's three-dimensional camber and corrugation help to stiffen the wing against aerodynamic and inertial loading during flapping motion. Their contribution to aerodynamic force production, however, is under debate. Here, we investigated the potential benefit of three-dimensional wing shape in three different-sized species of flies using models of micro-computed tomography-scanned natural wings and models in which we removed either the wing's camber, corrugation, or both properties. Forces and aerodynamic power requirements during root flapping were derived from three-dimensional computational fluid dynamics modelling. Our data show that three-dimensional camber has no benefit for lift production and attenuates Rankine–Froude flight efficiency by up to approximately 12% compared to a flat wing. Moreover, we did not find evidence for lift-enhancing trapped vortices in corrugation valleys at Reynolds numbers between 137 and 1623. We found, however, that in all tested insect species, aerodynamic pressure distribution during flapping is closely aligned to the wing's venation pattern. Altogether, our study strongly supports the assumption that the wing's three-dimensional structure provides mechanical support against external forces rather than improving lift or saving energetic costs associated with active wing flapping.
Published: 2020
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7. IRPhEP Evaluation of VENUS 9 and VENUS 7 Experiments

Author: Kevin Hesketh, Udo Wehmann, Winfried Zwermann, Christopher Grove, and Leon Leenders
Subjects: Physics, Nuclear Energy and Engineering, biology, Astronomy, Venus, Spectral shift, biology.organism_classification
Abstract: The zero-power reactor VENUS (Vulcain Experimental Nuclear Study) was built in 1963–1964 at CEN-SCK, Mol, Belgium, as a nuclear mock-up of a projected spectral shift marine reactor called VULCAIN. ...
Published: 2014
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8. First measurement of muon-neutrino disappearance in NOvA

Author: Adamson, P, Ader, C, Andrews, M, Anfimov, N, Anghel, I, Arms, K, Arrieta-Diaz, E, Aurisano, A, Ayres, DS, Backhouse, C, Baird, M, Bambah, BA, Bays, K, Bernstein, R, Betancourt, M, Bhatnagar, V, Bhuyan, B, Bian, J, Biery, K, Blackburn, T, Bocean, V, Bogert, D, Bolshakova, A, Bowden, M, Bower, C, Broemmelsiek, D, Bromberg, C, Brunetti, G, Bu, X, Butkevich, A, Capista, D, Catano-Mur, E, Chase, TR, Childress, S, Choudhary, BC, Chowdhury, B, Coan, TE, Coelho, JAB, Colo, M, Cooper, J, Corwin, L, Cronin-Hennessy, D, Cunningham, A, Davies, GS, Davies, JP, Del Tutto, M, Derwent, PF, Deepthi, KN, Demuth, D, Desai, S, Deuerling, G, Devan, A, Dey, J, Dharmapalan, R, Ding, P, Dixon, S, Djurcic, Z, Dukes, EC, Duyang, H, Ehrlich, R, Feldman, GJ, Felt, N, Fenyves, EJ, Flumerfelt, E, Foulkes, S, Frank, MJ, Freeman, W, Gabrielyan, M, Gallagher, HR, Gebhard, M, Ghosh, T, Gilbert, W, Giri, A, Goadhouse, S, Gomes, RA, Goodenough, L, Goodman, MC, Grichine, V, Grossman, N, Group, R, Grudzinski, J, Guarino, V, Guo, B, Habig, A, Handler, T, Hartnell, J, Hatcher, R, Hatzikoutelis, A, Heller, K, Howcroft, C, Huang, J, Huang, X, Hylen, J, Ishitsuka, M, Jediny, F, Jensen, C, Jensen, D, Johnson, C, Jostlein, H, Kafka, GK, Kamyshkov, Y, Kasahara, SMS, Kasetti, S, Kephart, K, Koizumi, G, Kotelnikov, S, Kourbanis, I, Krahn, Z, Kravtsov, V, Kreymer, A, Kulenberg, C, Kumar, A, Kutnink, T, Kwarciancy, R, Kwong, J, Lang, K, Lee, A, Lee, WM, Lee, K, Lein, S, Liu, J, Lokajicek, M, Lozier, J, Lu, Q, Lucas, P, Luchuk, S, Lukens, P, Lukhanin, G, Magill, S, Maan, K, Mann, WA, Marshak, ML, Martens, M, Martincik, J, Mason, P, Matera, K, Mathis, M, Matveev, V, Mayer, N, McCluskey, E, Mehdiyev, R, Merritt, H, Messier, MD, Meyer, H, Miao, T, Michael, D, Mikheyev, SP, Miller, WH, Mishra, SR, Mohanta, R, Moren, A, Mualem, L, Muether, M, Mufson, S, Musser, J, Newman, HB, Nelson, JK, Niner, E, Norman, A, Nowak, J, Oksuzian, Y, Olshevskiy, A, Oliver, J, Olson, T, Paley, J, Pandey, P, Para, A, Patterson, RB, Pawloski, G, Pearson, N, Perevalov, D, Pershey, D, Peterson, E, Petti, R, Phan-Budd, S, Piccoli, L, Pla-Dalmau, A, Plunkett, RK, Poling, R, Potukuchi, B, Psihas, F, Pushka, D, Qiu, X, Raddatz, N, Radovic, A, Rameika, RA, Ray, R, Rebel, B, Rechenmacher, R, Reed, B, Reilly, R, Rocco, D, Rodkin, D, Ruddick, K, Rusack, R, Ryabov, V, Sachdev, K, Sahijpal, S, Sahoo, H, Samoylov, O, Sanchez, MC, Saoulidou, N, Schlabach, P, Schneps, J, Schroeter, R, Sepulveda-Quiroz, J, Shanahan, P, Sherwood, B, Sheshukov, A, Singh, J, Singh, V, Smith, A, Smith, D, Smolik, J, Solomey, N, Sotnikov, A, Sousa, A, Soustruznik, K, Stenkin, Y, Strait, M, Suter, L, Talaga, RL, Tamsett, MC, Tariq, S, Tas, P, Tesarek, RJ, Thayyullathil, RB, Thomsen, K, Tian, X, Tognini, SC, Toner, R, Trevor, J, Tzanakos, G, Urheim, J, Vahle, P, Valerio, L, Vinton, L, Vrba, T, Waldron, AV, Wang, B, Wang, Z, Weber, A, Wehmann, A, Whittington, D, Wilcer, N, Wildberger, R, Wildman, D, Williams, K, Wojcicki, SG, Wood, K, Xiao, M, Xin, T, Yadav, N, Yang, S, Zadorozhnyy, S, Zalesak, J, Zamorano, B, Zhao, A, Zirnstein, J, Zwaska, R, Adamson, P, Ader, C, Andrews, M, Anfimov, N, Anghel, I, Arms, K, Arrieta-Diaz, E, Aurisano, A, Ayres, D, Backhouse, C, Baird, M, Bambah, B, Bays, K, Bernstein, R, Betancourt, M, Bhatnagar, V, Bhuyan, B, Bian, J, Biery, K, Blackburn, T, Bocean, V, Bogert, D, Bolshakova, A, Bowden, M, Bower, C, Broemmelsiek, D, Bromberg, C, Brunetti, G, Bu, X, Butkevich, A, Capista, D, Catano-Mur, E, Chase, T, Childress, S, Choudhary, B, Chowdhury, B, Coan, T, Coelho, J, Colo, M, Cooper, J, Corwin, L, Cronin-Hennessy, D, Cunningham, A, Davies, G, Davies, J, Del Tutto, M, Derwent, P, Deepthi, K, Demuth, D, Desai, S, Deuerling, G, Devan, A, Dey, J, Dharmapalan, R, Ding, P, Dixon, S, Djurcic, Z, Dukes, E, Duyang, H, Ehrlich, R, Feldman, G, Felt, N, Fenyves, E, Flumerfelt, E, Foulkes, S, Frank, M, Freeman, W, Gabrielyan, M, Gallagher, H, Gebhard, M, Ghosh, T, Gilbert, W, Giri, A, Goadhouse, S, Gomes, R, Goodenough, L, Goodman, M, Grichine, V, Grossman, N, Group, R, Grudzinski, J, Guarino, V, Guo, B, Habig, A, Handler, T, Hartnell, J, Hatcher, R, Hatzikoutelis, A, Heller, K, Howcroft, C, Huang, J, Huang, X, Hylen, J, Ishitsuka, M, Jediny, F, Jensen, C, Jensen, D, Johnson, C, Jostlein, H, Kafka, G, Kamyshkov, Y, Kasahara, S, Kasetti, S, Kephart, K, Koizumi, G, Kotelnikov, S, Kourbanis, I, Krahn, Z, Kravtsov, V, Kreymer, A, Kulenberg, C, Kumar, A, Kutnink, T, Kwarciancy, R, Kwong, J, Lang, K, Lee, A, Lee, W, Lee, K, Lein, S, Liu, J, Lokajicek, M, Lozier, J, Lu, Q, Lucas, P, Luchuk, S, Lukens, P, Lukhanin, G, Magill, S, Maan, K, Mann, W, Marshak, M, Martens, M, Martincik, J, Mason, P, Matera, K, Mathis, M, Matveev, V, Mayer, N, Mccluskey, E, Mehdiyev, R, Merritt, H, Messier, M, Meyer, H, Miao, T, Michael, D, Mikheyev, S, Miller, W, Mishra, S, Mohanta, R, Moren, A, Mualem, L, Muether, M, Mufson, S, Musser, J, Newman, H, Nelson, J, Niner, E, Norman, A, Nowak, J, Oksuzian, Y, Olshevskiy, A, Oliver, J, Olson, T, Paley, J, Pandey, P, Para, A, Patterson, R, Pawloski, G, Pearson, N, Perevalov, D, Pershey, D, Peterson, E, Petti, R, Phan-Budd, S, Piccoli, L, Pla-Dalmau, A, Plunkett, R, Poling, R, Potukuchi, B, Psihas, F, Pushka, D, Qiu, X, Raddatz, N, Radovic, A, Rameika, R, Ray, R, Rebel, B, Rechenmacher, R, Reed, B, Reilly, R, Rocco, D, Rodkin, D, Ruddick, K, Rusack, R, Ryabov, V, Sachdev, K, Sahijpal, S, Sahoo, H, Samoylov, O, Sanchez, M, Saoulidou, N, Schlabach, P, Schneps, J, Schroeter, R, Sepulveda-Quiroz, J, Shanahan, P, Sherwood, B, Sheshukov, A, Singh, J, Singh, V, Smith, A, Smith, D, Smolik, J, Solomey, N, Sotnikov, A, Sousa, A, Soustruznik, K, Stenkin, Y, Strait, M, Suter, L, Talaga, R, Tamsett, M, Tariq, S, Tas, P, Tesarek, R, Thayyullathil, R, Thomsen, K, Tian, X, Tognini, S, Toner, R, Trevor, J, Tzanakos, G, Urheim, J, Vahle, P, Valerio, L, Vinton, L, Vrba, T, Waldron, A, Wang, B, Wang, Z, Weber, A, Wehmann, A, Whittington, D, Wilcer, N, Wildberger, R, Wildman, D, Williams, K, Wojcicki, S, Wood, K, Xiao, M, Xin, T, Yadav, N, Yang, S, Zadorozhnyy, S, Zalesak, J, Zamorano, B, Zhao, A, Zirnstein, J, and Zwaska, R
Subjects: Physics, Particle physics, Physics - Instrumentation and Detectors, 010308 nuclear & particles physics, FOS: Physical sciences, QC0793, Nova (laser), Instrumentation and Detectors (physics.ins-det), 01 natural sciences, Measure (mathematics), NuMI, NOvA, neutrino oscillation, High Energy Physics - Experiment, Nuclear physics, High Energy Physics - Experiment (hep-ex), 0103 physical sciences, Muon neutrino, Fermilab, Neutrino, 010306 general physics, Neutrino oscillation, Beam (structure)
Abstract: This paper reports the first measurement using the NOvA detectors of $\nu_\mu$ disappearance in a $\nu_\mu$ beam. The analysis uses a 14 kton-equivalent exposure of $2.74 \times 10^{20}$ protons-on-target from the Fermilab NuMI beam. Assuming the normal neutrino mass hierarchy, we measure $\Delta m^{2}_{32}=(2.52^{+0.20}_{-0.18})\times 10^{-3}$ eV$^{2}$ and $\sin^2\theta_{23}$ in the range 0.38-0.65, both at the 68% confidence level, with two statistically-degenerate best fit points at $\sin^2\theta_{23} = $ 0.43 and 0.60. Results for the inverted mass hierarchy are also presented., Comment: 8 pages, 6 figures. Submitted to Phys. Rev. D Rapid Communications
Published: 2016
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9. Simulation of the orientation-dependent growth of InGaAs/InP by metalorganic vapor-phase epitaxy

Author: Bakin, A., Zwinge, G., Klockenbrink, R., Wehmann, H.-H., and Schlachetzki, A.
Subjects: Crystals -- Growth, Semiconductor doping -- Research, Physics
Abstract: Determination of anisotropic growth rates of InGaAs/InP heterostructures on patterned (100)InP substrates by metalorganic vapor-phase epitaxy (MOVPE) helps accurately predict defined growth shapes. Simulation of the orientation-dependent growth of InGaAs/InP by MOVPE is performed using a model with defined parameters. The model uses a graphical design to estimate the cross-sectional structure of heterostructures and patterned substrates.
Published: 1994

10. InP on Si substrates characterized by spectroscopic ellipsometry

Author: Zwinge, G., Ziegenmeyer, I., Wehmann, H.-H., Tang, G.-P., and Schlachetzki, A.
Subjects: Refractive index -- Analysis, Absorption -- Analysis, Indium -- Research, Silicon -- Usage, Physics
Abstract: Spectroscopic ellipsometry (SE) studies on thin InP deposits on Si substrate layers reveal an unusually high optical absorption by InP deposits due to dislocations, twins and grain boundaries caused by large lattice mismatch. SE is an analytic method for epitaxial films due to pronounced lattice defect observations near bond gaps. The crystal quality of the epitaxial layer is dependent on thin InP buffer layer growth details, low growth temperature and large lattice mismatch.
Published: 1993

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

Author: S. Murgia, B. Speakman, D. J. Auty, A. Lebedev, D. G. Michael, M. Zois, M. Kordosky, P. S. Miyagawa, P. Stamoulis, V. K. Semenov, A. E. Kreymer, P. Vahle, C. Howcroft, G. Tzanakos, H. R. Gallagher, G. Koizumi, J. K. De Jong, P. Lucas, N. Mayer, M. Watabe, D. J. Boehnlein, J. Reichenbacher, D. A. Harris, David Petyt, Marvin L Marshak, E. A. Peterson, M. Bishai, Warner A. Miller, Ken Heller, Mcd Sanchez, T. Joffe-Minor, Ž Pavlović, T. Kafka, M. Dierckxsens, M. A. Thomson, D. Naples, A. C. Weber, P. A. Symes, Stanley G. Wojcicki, S. M. Seun, M. Dorman, Jie Liu, K. Grzelak, M. D. Messier, S. Childress, R. Piteira, S. R. Mishra, Niki Saoulidou, G. F. Pearce, V. A. Ryabov, E. Buckley-Geer, J. Boehm, J. J. Evans, D. Rahman, S. Avvakumov, G. Tinti, A. Holin, T. Bergfeld, S. M S Kasahara, A. D. Marino, R. C. Webb, J. A. Thompson, Jorge G. Morfin, J. Hylen, R. H. Bernstein, A. Para, M. C. Goodman, M. Ishitsuka, Harvey B Newman, B. R. Becker, D. Bogert, D. J. Koskinen, A. Belias, Juan Pedro Ochoa-Ricoux, J. H. Cobb, T. Durkin, C. James, E. P. Hartouni, D. R. Ward, A. Mislivec, R. J. Nichol, Douglas Wright, Anatael Cabrera, I. Trostin, John Marshall, N. Grossman, T. M. Raufer, D. Bhattacharya, A. M. McGowan, S. K. Kotelnikov, K. Ruddick, E. Grashorn, H. Zheng, J. Hartnell, S. L. Mufson, R. Ospanov, T. C. Nicholls, Q. K. Wu, K. E. Arms, J. Gogos, J. Schneps, C. Rosenfeld, V. A. Tsarev, T. H. Fields, R. P. Litchfield, R. Pittam, Ruben Saakyan, Sacha E Kopp, G. M. Irwin, G. A. Giurgiu, D. Cherdack, R. Gran, G. J. Bock, H. A. Rubin, C. P. Ward, Carlos Escobar, M. V. Frohne, D. Indurthy, P. Schreiner, M. V. Diwan, A. Marchionni, C. Andreopoulos, H. J. Kang, D. E. Reyna, Andrew Blake, R. K. Plunkett, E. Falk Harris, C. D. Moore, Alec Habig, T. Osiecki, A. Sousa, Francisco Yumiceva, G. J. Feldman, W. Smart, J. Urheim, R. Armstrong, Brajesh C Choudhary, Peter D. Barnes, P. Adamson, B. C. Barish, W. P. Oliver, V. Paolone, C. R. Bower, J. L. Thron, E. Tetteh-Lartey, R. Zwaska, J. K. Nelson, R. L. Talaga, D. A. Jensen, D. E. Jaffe, A. J. Culling, E. Beall, H. Ping, D. Drakoulakos, S. Kumaratunga, B. Rebel, M. S. Kim, B. Baller, V. Smirnitsky, Philip Harris, J. A. Musser, A. De Santo, R. H. Milburn, C. White, C. W. Peck, P. J. Litchfield, P. M. Border, Karol Lang, L. Mualem, V. Verebryusov, R. A. Rameika, T. Yang, R. Hatcher, A. R. Erwin, John Derek Chapman, J. R. Meier, G. I. Merzon, N. West, D. S. Ayres, L. Jenner, William L. Barrett, P. Shanahan, B. Bock, W. A. Mann, A. Godley, P. Gouffon, R. Lee, B. Viren, R. Ford, Caleb Smith, J. M. Paley, A. A. Wehmann, N. Tagg, T. Patzak, G.D. Barr, John Miller, Juergen Thomas, AstroParticule et Cosmologie (APC (UMR_7164)), Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), APC - Neutrinos, Laboratoire de Physique Nucléaire et de Hautes Énergies (LPNHE), Centre National de la Recherche Scientifique (CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Centre National de la Recherche Scientifique (CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Pierre et Marie Curie - Paris 6 (UPMC)-AstroParticule et Cosmologie (APC (UMR_7164)), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), MINOS, Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Observatoire de Paris, PSL Research University (PSL)-PSL Research University (PSL)-Université Paris Diderot - Paris 7 (UPD7), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)-AstroParticule et Cosmologie (APC (UMR_7164)), PSL Research University (PSL)-PSL Research University (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Observatoire de Paris, Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), and Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Observatoire de Paris
Subjects: Physics, Nuclear and High Energy Physics, Particle physics, Muon, 010308 nuclear & particles physics, Physics::Instrumentation and Detectors, Monte Carlo method, FOS: Physical sciences, 01 natural sciences, High Energy Physics - Experiment, Nuclear physics, High Energy Physics - Experiment (hep-ex), Neutrino detector, MINOS, 0103 physical sciences, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], High Energy Physics::Experiment, Neutrino, 010306 general physics, Super-Kamiokande, Neutrino oscillation, Lepton
Abstract: We found 140 neutrino-induced muons in 854.24 live days in the MINOS far detector. 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 is consistent with an oscillation signal. A fit to the data for the oscillation parameters excludes the null oscillation hypothesis at the 94% confidence level. We separated the muons by charge sign in both the data and Monte Carlo events and found the ratio of the total number of negative to positive muons in both samples. The ratio of those ratios is a test of CPT conservation. The result is consistent with CPT conservation., 14 pages, 15 figures
Published: 2016
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12. The NuMI neutrino beam

Author: J. Urheim, David Petyt, S. Moed Sher, S. Phan-Budd, A. Sousa, Francisco Yumiceva, R. L. Talaga, N. E. Devenish, P. J. Litchfield, S. R. Mishra, M.L. Wong-Squires, J. A. Musser, S. Avvakumov, R. Reilly, M. Olsen, William L. Barrett, T. Yang, D. E. Jaffe, G. Tzanakos, R. H. Milburn, J. Hylen, B. Viren, S. C. Tognini, G. Koizumi, Niki Saoulidou, W. A. Mann, S. Murgia, J. K. Nelson, Maury Goodman, B. Baller, A. Perch, D. Michael, C. M. Castromonte, S. Childress, J. Johnstone, J. Biggs, R. J. Nichol, Alec Habig, P. Schreiner, D. A. Jensen, M. M. Medeiros, M. A. Thomson, K. Vaziri, Stanley G. Wojcicki, J. P. Cravens, R. H. Bernstein, A. Para, A. V. Devan, J. J. Evans, M. M. Pfützner, P. Shanahan, A. Holin, D. Crane, H. R. Gallagher, N. Tagg, Christopher G. White, R. C. Webb, J. A. Thompson, E. Falk, A. Radovic, C. Rosenfeld, D. A. Harris, M. P. Andrews, M. C. Sanchez, R. B. Pahlka, Brajesh C Choudhary, E. A. Peterson, R. Ford, Leigh H. Whitehead, N. Poonthottathil, A. C. Weber, A. R. Erwin, G.D. Barr, Junwei Huang, L. Loiacono, J. Schneps, D. Bogert, D. S. Ayres, R. Hatcher, K. Bourkland, L. H. Whitehead, J. K. De Jong, J.H. Cobb, Karol Lang, G. Vogel, Harvey B Newman, R. Andrews, P. Adamson, D. J. Harding, D. Pushka, A. Marchionni, Scott Osprey, X. Tian, I. Anghel, I. Trostin, Gregory J Pawloski, R. A. Rameika, John Miller, S. M. S. Kasahara, M. V. Diwan, Jorge G. Morfin, Juergen Thomas, N. Mayer, Ahmed Ibrahim, S. V. Cao, A. Aurisano, G. M. Irwin, C. James, Kevin Anderson, G. J. Feldman, J. R. Meier, N. Graf, R. Webber, Caleb Smith, J. M. Paley, W. Smart, A. A. Wehmann, D. Cronin-Hennessy, A. Stefanik, J. A. Nowak, D. Tinsley, P. Gouffon, R. Mehdiyev, P. Vahle, R. A. Gomes, T. Patzak, G. Tassotto, D. J. Boehnlein, T. H. Fields, C. Laughton, E. Villegas, L. Sauer, R. Zwaska, D. Naples, S. Hays, J. O׳Connor, M. D. Messier, C. L. McGivern, D. Indurthy, Rakesh Sharma, J. Ratchford, C. D. Moore, Z. Isvan, L. Mualem, W. H. Miller, G. J. Bock, D. Torretta, Sacha E Kopp, R. Gran, L. Corwin, S. L. Mufson, G. Lefeuvre, V. Zarucheisky, V. Bocean, T. Kafka, M. Bishai, M. Orchanian, K. Grzelak, M. V. Frohne, P. Prieto, J. Hartnell, B. C. Barish, R. Ducar, Philip Harris, H. A. Rubin, R. B. Patterson, K. Ruddick, Joao A B Coelho, V. Garkusha, D. Augustine, Ž Pavlović, D. Schoo, A. E. Kreymer, P. Lucas, W. P. Oliver, Marvin L Marshak, Ken Heller, M. J. Murtagh, M. Kordosky, S. R. Hahn, Andrew Blake, N. Grossman, A. Timmons, A. Schreckenberger, Carlos Escobar, R. K. Plunkett, X. Qiu, R. Toner, B. Rebel, AstroParticule et Cosmologie (APC (UMR_7164)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)-Université de Paris (UP), Observatoire de Paris, PSL Research University (PSL)-PSL Research University (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Observatoire de Paris, PSL Research University (PSL)-PSL Research University (PSL)-Université Paris Diderot - Paris 7 (UPD7), AstroParticule et Cosmologie ( APC - UMR 7164 ), Centre National de la Recherche Scientifique ( CNRS ) -Institut National de Physique Nucléaire et de Physique des Particules du CNRS ( IN2P3 ) -Observatoire de Paris-Université Paris Diderot - Paris 7 ( UPD7 ) -Commissariat à l'énergie atomique et aux énergies alternatives ( CEA ), and Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)-Université Paris Cité (UPCité)
Subjects: Accelerator Physics (physics.acc-ph), Target, Nuclear and High Energy Physics, Particle physics, beam monitoring, Physics::Instrumentation and Detectors, [PHYS.PHYS.PHYS-ACC-PH]Physics [physics]/Physics [physics]/Accelerator Physics [physics.acc-ph], FOS: Physical sciences, beam transport, neutrino: beam, Neutrino beam, 7. Clean energy, 01 natural sciences, NuMI, High Energy Physics - Experiment, Nuclear physics, High Energy Physics - Experiment (hep-ex), beam: alignment, Long Baseline, [ PHYS.HEXP ] Physics [physics]/High Energy Physics - Experiment [hep-ex], 0103 physical sciences, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], hardware, Fermilab, [ PHYS.PHYS.PHYS-ACC-PH ] Physics [physics]/Physics [physics]/Accelerator Physics [physics.acc-ph], Neutrinos, 010306 general physics, Instrumentation, activity report, Physics, 010308 nuclear & particles physics, Monitoring system, Beam, Main injector, Main Injector, Physics::Accelerator Physics, Physics - Accelerator Physics, High Energy Physics::Experiment, Neutrino, Beam (structure), performance
Abstract: International audience; This paper describes the hardware and operations of the Neutrinos at the Main Injector (NuMI) beam at Fermilab. It elaborates on the design considerations for the beam as a whole and for individual elements. The most important design details of individual components are described. Beam monitoring systems and procedures, including the tuning and alignment of the beam and NuMI long-term performance, are also discussed.
Published: 2016
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13. A new maskless selective-growth process for InP on (100) Si

Author: Tang, G.-P., Peiner, E., Wehmann, H.-H., Lubnow, A., Zwinge, G., Schlachetzki, A., and Hergeth, J.
Subjects: Thin film devices -- Research, Indium -- Research, Physics
Abstract: A new method for the selective growth of InP onto (100) Si substrates in a conventional low-pressure metalorganic vapor phase epitaxy system was presented. The process involved the deposition of the InP epitaxial layer on a photolithographically patterned InP buffer film without any dielectric mask. The process effectively inhibited the unwanted sidewall-growth interaction common in conventional dielectric mask selective-growth processes.
Published: 1992

14. Search for exotic baryons in 800 GeV/cpp→pX

Author: M. N. Kreisler, G. Gutierrez, Julián Félix, Erik Gottschalk, B. C. Knapp, A. A. Wehmann, D. C. Christian, Modesto Sosa, E. P. Hartouni, G. Moreno, Marco A. Reyes, and M. H.L.S. Wang
Subjects: Baryon, Physics, Nuclear physics, History, Particle physics, Exotic hadron, Fermilab, Pentaquark, Computer Science Applications, Education
Abstract: We present preliminary results of the search for the pentaquark candidates Θ(1540) and Ξ(1862) using data from Fermilab experiment E690 in the reaction pp → pX at 800 GeV/c. We find that production of pentaquark resonances is heavily suppressed with respect to the production of normal baryon and antibaryon resonances.
Published: 2006
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15. Elastic and anelastic properties of Fe-doped InP films on silicon cantilevers

Author: Klose, F.B., Harms, U., Neuhauser, H., Bakin, A., Behrens, I., Rosler, J., Schlachetzki, A., Wehmann, H.-H., and Peiner, E.
Subjects: Epitaxy -- Research, Dielectric films -- Research, Thin films -- Research, Phosphorus -- Research, Phosphorus -- Electric properties, Indium -- Research, Indium -- Electric properties, Physics
Abstract: The effect of Fe doping on the elastic and anelastic properties of heteroepitaxial InP films on microfabricated silicon cantilevers is investigated by the vibrating-reed technique. The results comprising of film stress, Young's modulus, thermal expansion coefficient, amplitude dependent damping and temperature dependent loss modulus are discussed in terms of dislocation nucleation and motion.
Published: 2002

16. Resonances and Λ0 polarization in 800 GeV/c pp → pdiffractedΛ0K+

Author: Julián Félix, S. Lee, Marco A. Reyes, D. Wesson, Erik Gottschalk, A. A. Wehmann, G. Moreno, D. C. Christian, M. C. Berisso, E. P. Hartouni, G. Guttierrez, B. C. Knapp, Kyriacos Markianos, A. Gara, M. H. L. S. Wang, and M. N. Kreisler
Subjects: Physics, Diffraction, Nuclear and High Energy Physics, Invariant mass, Atomic physics, Polarization (waves), Excitation
Abstract: Λ 0 polarization from pp → p diffracted Λ 0 K + at 800 GeV / c in the average depends linearly on Λ 0 K + invariant mass: Λ 0 polarization is 0.635 ± 0.036 at 1.64 GeV , consistent with zero at ≈ 2.195 GeV , and −0.586 ± 0.072 at 3.200 GeV . The origin of this Λ 0 polarization is, probably, the interference of at least two Λ 0 K + resonances, created from the excitation of the target proton, due to the diffracted proton transfered momentum.
Published: 2003
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17. Spin-Parity Analysis of the Centrally ProducedKS0K±π∓System at800GeV/c

Author: E. Gottschalk, Marco A. Reyes, D. Wesson, E. P. Hartouni, Modesto Sosa, A. A. Wehmann, Julián Félix, B. C. Knapp, A. Gara, G. Gutierrez, M. H. L. S. Wang, M. N. Kreisler, Kyriacos Markianos, D. C. Christian, S. Lee, M. C. Berisso, and G. Moreno
Subjects: Physics, Pion, Meson, Hadron, Pi, General Physics and Astronomy, Elementary particle, Parity (physics), Atomic physics, Large sample, Boson
Abstract: Results are presented from an analysis of a large sample of centrally produced mesons in the reaction $\mathrm{pp}\ensuremath{\rightarrow}{p}_{\mathrm{slow}}({K}_{S}^{0}{K}^{\ifmmode\pm\else\textpm\fi{}}{\ensuremath{\pi}}^{\ensuremath{\mp}}){p}_{\mathrm{fast}}$ with $800\mathrm{GeV}/c$ protons incident on liquid hydrogen. Two resonances dominate the final state, the ${f}_{1}(1285)$, decaying into ${a}_{0}\ensuremath{\pi}$, and the ${f}_{1}(1420)$, decaying into ${K}^{*}K$. Both mesons are produced with equal amounts of $|{J}_{z}{|}^{\ensuremath{\eta}}{\phantom{\rule{0ex}{0ex}}=\phantom{\rule{0ex}{0ex}}1}^{\ifmmode\pm\else\textpm\fi{}}$, and no ${J}_{z}\phantom{\rule{0ex}{0ex}}=\phantom{\rule{0ex}{0ex}}0$.
Published: 1999
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18. Study ofΛ0Polarization in Four Different ExclusiveppReactions at 27.5 GeV/c

Author: M. H. L. S. Wang, M. N. Kreisler, Erik Gottschalk, L. R. Wiencke, M. D. Church, S. D. Holmes, F. R. Huson, G. Gutierrez, C. Avilez, B. Knapp, J. T. White, D.A. Jensen, B. J. Stern, G. Moreno, Julián Félix, D. C. Christian, A. A. Wehmann, M. Forbush, E. P. Hartouni, and J. Uribe
Subjects: Physics, Particle physics, Stereochemistry, TheoryofComputation_ANALYSISOFALGORITHMSANDPROBLEMCOMPLEXITY, Hyperon, General Physics and Astronomy, Lambda, Lambda baryon
Abstract: We have measured the x[sub F] and P[sub T] dependence of the polarization of [Lambda][sup 0] hyperons produced in exclusive final states pp[r arrow]p[Lambda][sup 0]K[sup +][pi][sup +] [pi][sup [minus]] , pp[r arrow]p[Lambda][sup 0]K[sup +][pi][sup +] [pi][sup [minus]][pi][sup +][pi][sup [minus]] , pp[r arrow]p[Lambda][sup 0]K[sup + ][pi][sup +][pi][sup [minus]][pi][sup +] [pi][sup [minus]][pi][sup +][pi][sup [minus]] , and pp[r arrow]p[Lambda][sup 0]K[sup +][pi][sup +] [pi][sup [minus]][pi][sup +][pi][sup [minus]][pi][sup +][pi][sup [minus]][pi][sup +][pi][sup [minus] ] at 27.5thinspthinspGeV/c . We present an empirical parametrization for [Lambda][sup 0] polarization as a function of x[sub F] and P[sub T] : P=([minus]0.443[plus minus]0.03 7)x[sub F]P[sub T] for [minus]1[le]x[sub F][le]1 and 0[le]P[sub T][le]1.8 GeV/ c . This parametrization is independent of the final state and provides a good description of the data. We note that the mechanism responsible for [Lambda][sup 0] polarization appears to be independent of the production mechanism. [copyright] [ital 1999] [ital The American Physical Society]
Published: 1999
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19. Numerical simulation of a dual-branch laser/amplifier switch based on a thyristor-like structure

Author: Hergo-Heinrich Wehmann, Andreas Schlachetzki, and D.M. Gvozdic
Subjects: Physics, Optical amplifier, Computer simulation, Extinction ratio, business.industry, Amplifier, Thyristor, Condensed Matter Physics, Laser, Atomic and Molecular Physics, and Optics, Semiconductor laser theory, law.invention, Anode, Optics, law, Electrical and Electronic Engineering, business
Abstract: We present stationary simulations of a dual-branch heterostructure laser/optical-amplifier switch. The simulations of the thyristor-like structure show that the state of each anode branch can be maintained and controlled by small gate currents between ON and OFF. The switching approach employed here exhibits an extinction ratio of about 30 dB between the ON- and OFF-branch currents, with nearly symmetric rise and fall times of 5.1 and 6.1 ns, respectively. The device can be utilized as either a dual-branch laser or as an optical-amplifier space-division switch, e.g., in 2/spl times/2 switch matrices.
Published: 1999
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20. Partial Wave Analysis of the Centrally ProducedKSKSSystem at800GeV/c

Author: Julián Félix, A. A. Wehmann, D. C. Christian, M. H. L. S. Wang, M. N. Kreisler, E. Gottschalk, G. Gutierrez, Modesto Sosa, M. C. Berisso, A. Gara, B. C. Knapp, E. P. Hartouni, Marco A. Reyes, Kyriacos Markianos, S. Lee, D. Wesson, and G. Moreno
Subjects: Physics, Angular momentum, Pion, Meson, Partial wave analysis, Hadron, General Physics and Astronomy, High Energy Physics::Experiment, Elementary particle, Atomic physics, Nuclear Experiment, Boson, Spin-½
Abstract: Results are presented from a partial wave analysis of a sample of centrally produced mesons in the reaction $\mathrm{pp}\ensuremath{\rightarrow}{p}_{\mathrm{slow}}({K}_{S}{K}_{S}){p}_{\mathrm{fast}}$, with 800 GeV/c protons incident on a liquid hydrogen target. The meson system is found to be predominantly $S$ wave in the mass range between ${K}_{S}{K}_{S}$ threshold and $1.55\mathrm{GeV}{/c}^{2}$. The ${f}_{0}(1500)$ is observed in this region. Above $1.55\mathrm{GeV}{/c}^{2}$ two solutions are possible, one with mainly $S$ wave and another with mainly $D$ wave. This ambiguity prevents a unique determination of the spin of the ${f}_{J}(1710)$ meson.
Published: 1998
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21. Precise measurement of theΣ0mass

Author: J. Uribe, E. P. Hartouni, Julián Félix, Erik Gottschalk, L. R. Wiencke, B. C. Knapp, J. T. White, M. H.L.S. Wang, G. Moreno, C. Avilez, B. J. Stern, G. Gutierrez, M. D. Church, M. N. Kreisler, M. Forbush, A. A. Wehmann, D. C. Christian, and F. R. Huson
Subjects: Baryon, Physics, Nuclear and High Energy Physics, Crystallography, Hadron, Order (ring theory), Invariant mass, Elementary particle, Atomic physics, Lambda baryon, Lambda, Sigma baryon
Abstract: We have obtained precise measurements of the {Sigma}{sup 0} mass and the {Sigma}{sup 0}-{Lambda}{sup 0} mass difference from a fit to the {Lambda}{sup 0}{gamma} invariant mass distribution of 3327 {Sigma}{sup 0}{r_arrow}{Lambda}{sup 0}+{gamma} decays. Our measurements yield M{sub {Sigma}{sup 0}}=1192.65{plus_minus}0.020{plus_minus}0.014 MeV/c{sup 2} and M{sub {Sigma}{sup 0}}{minus}M{sub {Lambda}{sup 0}}=76.966{plus_minus}0.020{plus_minus}0.013 MeV/c{sup 2}, where the uncertainties are statistical and systematic in that order. This represents a significant improvement over all previous determinations and is the first direct measurement of the {Sigma}{sup 0} mass itself. {copyright} {ital 1997} {ital The American Physical Society}
Published: 1997
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22. Spin-parity analysis of the centrally produced KK system at 800 GeV

Author: M.A. Reyes, M.C. Berisso, D. Christian, J. Felix, A. Gara, E. Gottschalk, G. Gutierrez, E.P. Hartouni, B. Knapp, M.N. Kreisler, S. Lee, K. Markianos, G. Moreno, M. Sosa, A. Wehmann, and D. Wesson
Subjects: Physics, High Energy Physics - Experiment (hep-ex), Nuclear and High Energy Physics, Particle physics, Meson, FOS: Physical sciences, High Energy Physics::Experiment, Parity (physics), Nuclear Experiment, Atomic and Molecular Physics, and Optics, High Energy Physics - Experiment
Abstract: Results are presented of the spin-parity analysis on a sample of centrally produced mesons in the reaction (p p -> p_{slow} K_s K_s p_{fast}) with 800 GeV protons on liquid hydrogen. The spin-parity analysis in the mass region between threshold and 1.58 GeV/c^2 shows that the (K_s K_s) system is produced mainly in S-wave. The f_0(1500) is clearly observed in this region. Above 1.58 GeV/c^2 two solutions are possible, one with mainly S-wave and another with mainly D-wave. This ambiguity prevents a unique determination of the spin of the f_J(1710) meson., 6 pages, including 6 figures. LaTex, uses 'espcrc2.sty'. To appear in LEAP'96 proceedings
Published: 1997
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23. Hyperon production in 28 GeV/cproton-proton interactions

Author: E. P. Hartouni, Erik Gottschalk, L. R. Wiencke, A. A. Wehmann, C. Avilez, G. Gutierrez, M. N. Kreisler, M. Forbush, J. Uribe, M. D. Church, S. D. Holmes, F. R. Huson, D. C. Christian, B. J. Stern, J. T. White, and B. C. Knapp
Subjects: Nuclear physics, Physics, Nuclear and High Energy Physics, Particle physics, Proton, Significant difference, Phenomenological model, Hyperon, High Energy Physics::Experiment, Production (computer science), Nuclear Experiment, Lambda
Abstract: A study of hyperon production in fully reconstructed proton-proton interactions at 28 GeV/c (\ensuremath{\surd}s=7.3 GeV) is presented. Features of the data are presented with the aid of a phenomenological model, the LPM, that was developed to study \ensuremath{\Lambda} production reactions. We note the similarities between \ensuremath{\Lambda} reactions and other families of reactions, and show that this surprisingly simple model can be easily adapted to ${\mathrm{\ensuremath{\Xi}}}^{\mathrm{\ensuremath{-}}}$ production reactions. The only significant difference between the \ensuremath{\Lambda} and ${\mathrm{\ensuremath{\Xi}}}^{\mathrm{\ensuremath{-}}}$ data is the observation that \ensuremath{\Lambda} hyperons are produced as leading particles, whereas ${\mathrm{\ensuremath{\Xi}}}^{\mathrm{\ensuremath{-}}}$ hyperons are not. Production cross sections for eight high-multiplicity hyperon reactions are presented. \textcopyright{} 1996 The American Physical Society.
Published: 1996
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24. Study ofΛ0Polarization inpp→pΛ0K+π+π−π+π−at 27.5 GeV

Author: Julián Félix, M. Forbush, B. C. Knapp, S. D. Holmes, C. Avilez, E. P. Hartouni, B. J. Stern, G. Gutierrez, J. T. White, M. N. Kreisler, D. C. Christian, Church, A. A. Wehmann, G. Moreno, F. R. Huson, D.A. Jensen, Erik Gottschalk, L. R. Wiencke, and J. Uribe
Subjects: Physics, Crystallography, TheoryofComputation_ANALYSISOFALGORITHMSANDPROBLEMCOMPLEXITY, Quantum electrodynamics, Transverse momentum, Pi, General Physics and Astronomy, Invariant mass, Polarization (waves), Lambda, Lambda baryon
Abstract: We measured the polarization of 51195 {Lambda}{sup 0}{close_quote}s produced in the specific reaction {ital pp}{r_arrow}{ital p}{Lambda}{sup 0}{ital K}{sup +}{pi}{sup +}{pi}{sup {minus}}{pi}{sup +}{pi}{sup {minus}} with 27.5GeV/{ital c} protons incident on a liquid hydrogen target. Because the reaction was measured completely, the polarization was studied versus the following: {ital x}{sub {ital F}}({minus}1to+1), {Lambda}{sup 0} transverse momentum (0 to 1.32GeV/{ital c}), correlations with the momentum vectors of the other particles in the reaction, and the invariant mass of combinations of particles in the final state. The dependence of the polarization on these variables does not always agree with theoretical expectations. {copyright} {ital 1995 The American Physical Society.}
Published: 1996
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25. Light-meson spectroscopy in fermilab experiment E690

Author: S. Lee, M. N. Kreisler, A. Gara, G. Moreno, G. Gutierrez, M. Romero, E. P. Hartouni, M. C. Berisso, Modesto Sosa, D. Wesson, Juan C. Felix, Kyriacos Markianos, B. C. Knapp, A. Wehmann, and D. C. Christian
Subjects: Nuclear physics, Momentum, Physics, Particle physics, Proton, Meson, Fermilab, Spectroscopy, Beam (structure)
Abstract: During the last Fermilab fixed-target run experiment E690 wrote on tape five billion events in the reaction pp→Xpfast. The beam momentum was 800 GeV/c, the target liquid hydrogen and pfast was a-t
Published: 1994
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26. High rate drift chambers

Author: A. Gara, D. A. Jensen, J. A. Wightman, S. Lee, G. Gutierrez, E. P. Hartouni, D. Wesson, Juan C. Felix, Modesto Sosa, A. Wehmann, M. N. Kreisler, W. Sippach, Kyriacos Markianos, C. Avilez, S.D. Holmes, B. C. Knapp, F. R. Huson, G. Moreno, D. C. Christian, M. Romero, M. Forbush, and M.C. Berisso
Subjects: High rate, Nuclear physics, Physics, Nuclear and High Energy Physics, Spectrometer, Proton, Incident beam, Radiation damage, Fermilab, Atomic physics, Instrumentation, Dissociation (chemistry), Liquid hydrogen
Abstract: Fermilab experiment 690 [1], a study of target dissociation reactions pp → pX using an 800 GeV/c proton beam and a liquid hydrogen target, collected data in late 1991. The incident beam and 600–800 GeV/c scattered protons were measured using a system of six 6 in. × 4 in. and two 15 in. × 8 in. pressurized drift chambers spaced over 260 m. These chambers provided precise measurements at rates above 10 MHz (2 MHz per cm of sense wire). The measurement resolution of the smaller chambers was 90 μm, and the resolution of the larger chambers was 125 μm. Construction details and performance results, including radiation damage, are presented.
Published: 1994
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27. Pion-pion correlations at low relative momentum produced inp−pcollisions at 27.5 GeV/c

Author: C. Avilez, A. Wehmann, M. N. Kreisler, G. Gutierrez, M. D. Church, B. C. Knapp, E. P. Hartouni, B. J. Stern, J. Uribe, D. A. Jensen, W. Sippach, L. R. Wiencke, E. Gottschalk, S.D. Holmes, F. R. Huson, D. C. Christian, J. T. White, and M. Forbush
Subjects: Nuclear physics, Physics, Particle physics, Pion, Pair production, Meson, Hadron, Elementary particle, Multiplicity (mathematics), Nuclear Experiment, Boson
Abstract: We have measured the momentum correlation of pion pairs produced in the collisions of 27.5 GeV/c protons in liquid hydrogen. By considering events for which all final state particles have been measured, we have succeeded in reducing backgrounds due to particle misidentification below 5% for ${\ensuremath{\pi}}^{+}$ and 1% for ${\ensuremath{\pi}}^{\ensuremath{-}}$. Our use of a precision magnetic spectrometer has provided an accurate determination of particle momenta and excellent acceptance for particle pairs with small relative momentum essential for correlations studies. A large data sample of fully reconstructed events (1 \ifmmode\times\else\texttimes\fi{} ${10}^{6}$) allows us to analyze the correlations for ${\ensuremath{\pi}}^{+}{\ensuremath{\pi}}^{+}$ and ${\ensuremath{\pi}}^{\ensuremath{-}}{\ensuremath{\pi}}^{\ensuremath{-}}$ pairs separately, and also as a function of the final state multiplicity. We find that the pion pair correlations scale 0.98 fm describes the data well. We do not find any indication of multiplicity dependence of the correlation scale for multiplicities from 6 to 14 final state particles.
Published: 1994
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28. Precise measurement of theΛ0and Λ¯0masses and a test ofCPTinvariance

Author: J. Uribe, B. J. Stern, J. T. White, C. Avilez, G. Gutierrez, L. R. Wiencke, E. Gottschalk, E. P. Hartouni, B. C. Knapp, D.A. Jensen, F. R. Huson, Church, M. N. Kreisler, A. A. Wehmann, M. Forbush, and D. C. Christian
Subjects: Combinatorics, Systematic error, Physics, Antiparticle, Classical mechanics, Meson, CPT symmetry, Hadron, General Physics and Astronomy, Elementary particle, Lambda, Lambda baryon
Abstract: A precision measurement of the masses of the ${\mathrm{\ensuremath{\Lambda}}}^{0}$ and \ensuremath{\Lambda}${\mathrm{\ifmmode\bar\else\textasciimacron\fi{}}}^{0}$ hyperons is obtained from Gaussian fits to the invariant mass distributions for 20 138 ${\mathrm{\ensuremath{\Lambda}}}^{0}$'s and 18 309 \ensuremath{\Lambda}${\mathrm{\ifmmode\bar\else\textasciimacron\fi{}}}^{0}$'s. The Gaussians have standard deviations of 0.49 and 0.51 MeV/${\mathit{c}}^{2}$ for the ${\mathrm{\ensuremath{\Lambda}}}^{0}$ and \ensuremath{\Lambda}${\mathrm{\ifmmode\bar\else\textasciimacron\fi{}}}^{0}$, respectively. Systematic errors were reduced by calibrating the spectrometer with 60 000 exclusive events containing a ${\mathit{K}}_{\mathit{S}}^{0}$. We find ${\mathit{M}}_{\mathrm{\ensuremath{\Lambda}}}$=1115.678\ifmmode\pm\else\textpm\fi{}0.006\ifmmode\pm\else\textpm\fi{}0.006 MeV/${\mathit{c}}^{2}$ and ${\mathit{M}}_{\mathrm{\ensuremath{\Lambda}}\mathrm{\ifmmode\bar\else\textasciimacron\fi{}}}$=1115.690\ifmmode\pm\else\textpm\fi{}0.008\ifmmode\pm\else\textpm\fi{}0.006 MeV/${\mathit{c}}^{2}$. The ${\mathrm{\ensuremath{\Lambda}}}^{0\mathrm{\ensuremath{-}}}$\ensuremath{\Lambda}${\mathrm{\ifmmode\bar\else\textasciimacron\fi{}}}^{0}$ mass difference testing CPT invariance is -0.012\ifmmode\pm\else\textpm\fi{}0.010 MeV/${\mathit{c}}^{2}$.
Published: 1994
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29. Observation of Coulomb effects in production ofπ+π−,pπ−, andK+K−pairs inppcollisions at 27.5 GeV/c

Author: B. C. Knapp, J. T. White, E. P. Hartouni, G. Gutierrez, J. Uribe, B. J. Stern, M. Rabin, F. R. Huson, R. Hylton, J. Strait, A. A. Wehmann, B. Klima, Erik Gottschalk, C. Avilez, L. R. Wiencke, M. Forbush, M. D. Church, S. D. Holmes, M. N. Kreisler, W. Sippach, D. A. Jensen, and D. C. Christian
Subjects: Physics, Computer Science::Information Retrieval, Nuclear Theory, Hadron, Relative velocity, Rest frame, Gamow factor, Charged particle, Nuclear physics, Pair production, Pion, Coulomb, High Energy Physics::Experiment, Nuclear Experiment
Abstract: In a study of collisions of 27.5 GeV/{ital c} protons in liquid hydrogen we have observed enhanced production of oppositely charged hadron pairs when the relative velocity of the two hadrons in the pair rest frame approaches {alpha}{ital c}. The scale and velocity dependence of the enhancement agree well with the effect of the attractive Coulomb interaction as described by the Gamow factor.
Published: 1992
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30. Sudden stratospheric warmings seen in MINOS deep underground muon data

Author: S. J. Coleman, Caleb Smith, J. M. Paley, R. P. Litchfield, A. Holin, A. A. Wehmann, P. Vahle, S. Cavanaugh, P. A. Symes, A. Sousa, P. J. Litchfield, David Petyt, D. J. Boehnlein, D. J. Auty, N. Mayer, S. Kumaratunga, J. Urheim, R. Hatcher, M. V. Diwan, Warner A. Miller, V. Paolone, C. R. Bower, J. J. Kim, D. G. Michael, N. Tagg, A. Himmel, Brajesh C Choudhary, L. Mualem, G.D. Barr, N. West, Alec Habig, P. Lucas, J. Smith, B. Baller, D. S. Ayres, G. Koizumi, Harvey B Newman, J. L. Thron, J. A. Musser, Richard J.H. Smith, J. J. Evans, T. M. Raufer, Z. Pavlovic, K. E. Arms, John Derek Chapman, D. Bogert, B. Speakman, D. Cherdack, Scott Osprey, Gregory J Pawloski, Jorge G. Morfin, G. M. Irwin, J. H. Cobb, S. R. Mishra, N. Grossman, K. Grzelak, C. J. Metelko, J. R. Meier, Jian Ma, M. A. Thomson, D. Naples, M. Kordosky, A. Godley, W. Smart, M. Dierckxsens, J. Reichenbacher, Juergen Thomas, S. Childress, G. J. Feldman, R. Ospanov, C. Andreopoulos, Sacha E Kopp, R. Gran, John Marshall, L. Loiacono, Stanley G. Wojcicki, C. James, T. Yang, P. Gouffon, B. R. Becker, D. J. Koskinen, L. Miller, Andrew Blake, J. Boehm, R. C. Webb, J. Hylen, R. H. Bernstein, P. A. Rodrigues, J. A. Thompson, J. K. De Jong, E. Grashorn, M. Ishitsuka, M. C. Sanchez, S. M. Seun, Carlos Escobar, M. Watabe, A. Belias, R. J. Nichol, M. Dorman, B. Viren, R. K. Plunkett, M. C. Goodman, D. E. Jaffe, H. R. Gallagher, C. D. Moore, J. K. Nelson, Peter D. Barnes, Niki Saoulidou, A. M. McGowan, H. A. Rubin, D. A. Harris, K. Ruddick, T. Kafka, Matthew L Strait, G. F. Pearce, D. A. Jensen, William L. Barrett, P. Shanahan, P. Stamoulis, M. D. Messier, R. L. Talaga, P. Schreiner, Christopher G. White, C. W. Peck, K. Zhang, J. Schneps, W. A. Mann, M. V. Frohne, Karol Lang, M. Bishai, Juan Pedro Ochoa-Ricoux, S. A. Dytman, R. Armstrong, W. P. Oliver, Philip Harris, Douglas Wright, A. E. Kreymer, Marvin L Marshak, A. C. Weber, G. Tzanakos, D. Bhattacharya, R. Pittam, J. Hartnell, M. A. Tavera, G. Tinti, John J. Barnett, T. C. Nicholls, S. L. Mufson, G. J. Bock, S. M S Kasahara, B. Rebel, A. Rahaman, R. Zwaska, A. J. Culling, C. Rosenfeld, P. Adamson, R. A. Rameika, E. Buckley-Geer, and E. Falk
Subjects: Physics, Muon, Physics::Instrumentation and Detectors, Cosmic ray muons, Cosmic ray, Atmospheric sciences, Atmospheric temperature, Troposphere, Atmosphere, Geophysics, MINOS, Climatology, General Earth and Planetary Sciences, High Energy Physics::Experiment, Stratosphere, Physics::Atmospheric and Oceanic Physics
Abstract: The rate of high energy cosmic ray muons as measured underground is shown to be strongly correlated with upper-air temperatures during short-term atmospheric (10-day) events. The effects are seen by correlating data from the MINOS underground detector and temperatures from the European Centre for Medium Range Weather Forecasts during the winter periods from 2003-2007. This effect provides an independent technique for the measurement of meteorological conditions and presents a unique opportunity to measure both short and long-term changes in this important part of the atmosphere. Copyright 2009 by the American Geophysical Union.
Published: 2009

31. [Untitled]

Author: S. Lee, B. C. Knapp, G. Moreno, M. C. Berisso, E. P. Hartouni, A. A. Wehmann, M. A. Reyes, A. Gara, M. N. Kreisler, D. C. Christian, D. Wesson, K. Markianos, G. Gutierrez, Juan C. Felix, M. H. L. S. Wang, and E. E. Gottschalk
Subjects: Nuclear physics, Baryon, Physics, Particle physics, Transverse momentum, Fermilab, Polarization (waves)
Abstract: It is an experimental evidence that all baryons are created polarized from unpolarized p—nucleus collisions. So far, the origin of this polarization remains unexplained in spite of the experimental evidences accumulated in the past thirty years. Up to these days, Λ0 is the most studied baryon for polarization, for it is copiously produced in p—nucleus collisions at the energies of the principal high energy physics accelerators of the world. This paper is an overview of the experimental evidences accumulated on the polarization of Λ0 from unpolarized exclusive pp collisions as function of xF, PT, and M(Λ0K+) in the past fifteen years inside Fermilab e690 experiment, in the particular reactions pp→pΛ0K0π+, pp→ppΛ0Λ−0, pp→pΛ0K+, produced at 800 GeV.
Published: 2009
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32. Search for Active Neutrino Disappearance Using Neutral-Current Interactions in the MINOS Long-Baseline Experiment

Author: P. Adamson, C. Andreopoulos, K. E. Arms, R. Armstrong, D. J. Auty, D. S. Ayres, C. Backhouse, B. Baller, G. Barr, W. L. Barrett, B. R. Becker, A. Belias, R. H. Bernstein, D. Bhattacharya, M. Bishai, A. Blake, G. J. Bock, J. Boehm, D. J. Boehnlein, D. Bogert, C. Bower, E. Buckley-Geer, S. Cavanaugh, J. D. Chapman, D. Cherdack, S. Childress, B. C. Choudhary, J. H. Cobb, S. J. Coleman, A. J. Culling, J. K. de Jong, M. Dierckxsens, M. V. Diwan, M. Dorman, S. A. Dytman, C. O. Escobar, J. J. Evans, E. Falk Harris, G. J. Feldman, M. V. Frohne, H. R. Gallagher, A. Godley, M. C. Goodman, P. Gouffon, R. Gran, E. W. Grashorn, N. Grossman, K. Grzelak, A. Habig, D. Harris, P. G. Harris, J. Hartnell, R. Hatcher, K. Heller, A. Himmel, A. Holin, L. Hsu, J. Hylen, G. M. Irwin, M. Ishitsuka, D. E. Jaffe, C. James, D. Jensen, T. Kafka, S. M. S. Kasahara, J. J. Kim, M. S. Kim, G. Koizumi, S. Kopp, M. Kordosky, D. J. Koskinen, S. K. Kotelnikov, A. Kreymer, S. Kumaratunga, K. Lang, J. Ling, P. J. Litchfield, R. P. Litchfield, L. Loiacono, P. Lucas, J. Ma, W. A. Mann, A. Marchionni, M. L. Marshak, J. S. Marshall, N. Mayer, A. M. McGowan, J. R. Meier, M. D. Messier, C. J. Metelko, D. G. Michael, W. H. Miller, S. R. Mishra, C. D. Moore, J. Morfín, L. Mualem, S. Mufson, S. Murgia, J. Musser, D. Naples, J. K. Nelson, H. B. Newman, R. J. Nichol, T. C. Nicholls, J. P. Ochoa-Ricoux, W. P. Oliver, R. Ospanov, J. Paley, V. Paolone, A. Para, T. Patzak, Ž. Pavlović, G. Pawloski, G. F. Pearce, C. W. Peck, D. A. Petyt, R. Pittam, R. K. Plunkett, A. Rahaman, R. A. Rameika, T. M. Raufer, B. Rebel, J. Reichenbacher, P. A. Rodrigues, C. Rosenfeld, H. A. Rubin, V. A. Ryabov, M. C. Sanchez, N. Saoulidou, J. Schneps, P. Schreiner, P. Shanahan, W. Smart, C. Smith, A. Sousa, B. Speakman, P. Stamoulis, M. Strait, N. Tagg, R. L. Talaga, M. A. Tavera, J. Thomas, M. A. Thomson, J. L. Thron, G. Tinti, I. Trostin, V. A. Tsarev, G. Tzanakos, J. Urheim, P. Vahle, B. Viren, D. R. Ward, M. Watabe, A. Weber, R. C. Webb, A. Wehmann, N. West, C. White, S. G. Wojcicki, D. M. Wright, T. Yang, K. Zhang, R. Zwaska, APC - Neutrinos, Laboratoire de Physique Nucléaire et de Hautes Énergies (LPNHE), Centre National de la Recherche Scientifique (CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Centre National de la Recherche Scientifique (CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Pierre et Marie Curie - Paris 6 (UPMC)-AstroParticule et Cosmologie (APC (UMR_7164)), Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), MINOS, AstroParticule et Cosmologie (APC (UMR_7164)), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Observatoire de Paris, PSL Research University (PSL)-PSL Research University (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Observatoire de Paris, PSL Research University (PSL)-PSL Research University (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Laboratoire de Physique Nucléaire et de Hautes Énergies (LPNHE), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)-AstroParticule et Cosmologie (APC (UMR_7164)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Observatoire de Paris, and Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)
Subjects: Physics, Particle physics, etc, Neutrino mass and mixing, [PHYS.ASTR.IM]Physics [physics]/Astrophysics [astro-ph]/Instrumentation and Methods for Astrophysic [astro-ph.IM], Neutral current, 010308 nuclear & particles physics, High Energy Physics::Phenomenology, FOS: Physical sciences, General Physics and Astronomy, right-handed neutrinos, 01 natural sciences, High Energy Physics - Experiment, [SDU.ASTR.IM]Sciences of the Universe [physics]/Astrophysics [astro-ph]/Instrumentation and Methods for Astrophysic [astro-ph.IM], High Energy Physics - Experiment (hep-ex), Neutral currents, MINOS, 0103 physical sciences, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], High Energy Physics::Experiment, Neutrino, 010306 general physics, Baseline (configuration management), Non-standard-model neutrinos
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 muon neutirnos 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 muon neutrino 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 electron neutrino appearance at the current experimental limit is also presented., Comment: 5 pages, 3 figures
Published: 2008
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33. The magnetized steel and scintillator calorimeters of the MINOS experiment

Author: J. J. Grudzinski, R. J. Nichol, Q. K. Wu, N. Tagg, R. Piteira, L. E. Price, G.D. Barr, T. Osiecki, B. R. Becker, A. Sousa, Francisco Yumiceva, A. Byon-Wagner, A. C. Weber, Alec Habig, D.S. Damiani, M. C. Sanchez, John Miller, M. A. Barker, M. Ignatenko, Carlos Escobar, J. K. Nelson, P. J. Litchfield, R. K. Plunkett, Juergen Thomas, J. Trevor, D. Pushka, H. R. Gallagher, D. E. Reyna, Raymond Lee, S. Childress, E. Maher, J. Boehm, E. Falk Harris, C. D. Moore, J. Kilmer, P. Adamson, M. Proga, M. V. Frohne, P. Gouffon, D. Indurthy, D. A. Harris, R. C. Webb, J. A. Thompson, S. M. Seun, M. Dorman, T. Alexopoulos, C. Rosenfeld, S. M S Kasahara, L. Wai, W.W.M. Allison, S. Boyd, E. A. Peterson, R. Ospanov, P. S. Miyagawa, B. Baller, William L. Barrett, P. Shanahan, B. Bock, M. Kostin, Harvey B Newman, J. L. Thron, P. N. Smith, M. Gebhard, B. Viren, Paul Schoessow, S.R. Mishra, T. Bergfeld, Yu. A. Gornushkin, T. M. Raufer, H. Ping, K. Grzelak, A. L. Read, W. Smart, M. D. Messier, A. M. McGowan, K. Ruddick, A. S. Ladran, W. A. Mann, John Oliver, G. I. Merzon, N. West, John Marshall, J. Urheim, S. Madani, V. Paolone, C. R. Bower, M. Zois, J. A. Musser, A. De Santo, D. J. Koskinen, P. Stamoulis, Ž Pavlović, Juan Pedro Ochoa-Ricoux, S. Murgia, A. Lebedev, M. Vakili, Warner A. Miller, G. M. Irwin, Weonjong Lee, D. Rahman, S. Avvakumov, Randall White, Gary Drake, A. D. Marino, H. A. Rubin, D. S. Ayres, W. Luebke, Christopher G. White, A. Belias, Y. Ho, R. L. Talaga, J. C. Yun, J. J. Evans, Carole C. Perry, L. Jenner, F. A. Nezrick, G. J. Feldman, E. Buckley-Geer, P. A. Symes, G. Tzanakos, V.A. Onuchin, C. Arroyo, A. Godley, W. P. Oliver, P. Lucas, R. Shivane, N. Felt, Marvin L Marshak, C. P. Ward, C. Howcroft, G. Koizumi, J. D. Cossairt, H. Zheng, D. R. Ward, H. J. Kang, C. Velissaris, B. C. Choudhary, T. Durkin, N. P. Longley, P. Schreiner, Ken Heller, R. H. Milburn, D. Krakauer, Reinhard Schwienhorst, T. Patzak, J. H. Cobb, B. Speakman, Kevin Anderson, S. J. Coleman, Hyun-Chul Kim, Peter D. Barnes, D. Bhattacharya, N. Grossman, M. J. Murtagh, R. Ford, J. Hartnell, Caleb Smith, E. P. Hartouni, E. Beall, D. A. Jensen, M. S. Kim, S. Kumaratunga, K. Vaziri, J. M. Paley, B. C. Barish, R. A. Rameika, J. W. Dawson, E. Tetteh-Lartey, M. Watabe, Andrew Blake, G. J. Alner, R. Ducar, V. J. Guarino, T. Kafka, R. Trendler, T. C. Nicholls, T. H. Fields, A. A. Wehmann, C. Andreopoulos, Philip Harris, M. Bishai, C. W. Peck, S. Chernichenko, H. Courant, Karol Lang, D. M. DeMuth, Ruben Saakyan, Sacha E Kopp, D. G. Michael, Thomas R. Chase, J. McDonald, O. Fackler, T. Joffe-Minor, W. G. Yan, R. Morse, A. J. Culling, D. Crane, Niki Saoulidou, G. F. Pearce, V. A. Ryabov, J. Gogos, E. Grashorn, V. Makeev, Jorge G. Morfin, C. James, M. P. Andrews, Anna Pla-Dalmau, R. P. Litchfield, N. Hill, Ji-Yong Liu, P.D. Shield, M. Dierckxsens, V. K. Semenov, P. Vahle, D. J. Boehnlein, C. Laughton, M. Kordosky, V. Smirnitsky, D. Bogert, C. Nelson, A. Marchionni, I. Trostin, G. J. Bock, Alexander Terekhov, L. Mualem, V. A. Tsarev, J. K. de Jong, P. M. Border, J. Hanson, R. Halsall, T. Yang, Douglas Wright, Anatael Cabrera, S. L. Mufson, M. Libkind, V. Bocean, B. Rebel, J. M. Swan, N. Pearson, V. Verebryusov, R. Hatcher, John Derek Chapman, J. R. Meier, P. Sullivan, M. A. Thomson, D. Naples, Stanley G. Wojcicki, J. Hylen, R. H. Bernstein, A. Para, M. C. Goodman, M. V. Diwan, Keith Bechtol, D. A. Petyt, A. Stefanik, S. K. Kotelnikov, A. R. Erwin, J. Schneps, R. Andrews, R. Zwaska, APC - Neutrinos, Laboratoire de Physique Nucléaire et de Hautes Énergies (LPNHE), Centre National de la Recherche Scientifique (CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Centre National de la Recherche Scientifique (CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Pierre et Marie Curie - Paris 6 (UPMC)-AstroParticule et Cosmologie (APC (UMR_7164)), Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), MINOS, AstroParticule et Cosmologie (APC (UMR_7164)), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Observatoire de Paris, PSL Research University (PSL)-PSL Research University (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Observatoire de Paris, PSL Research University (PSL)-PSL Research University (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Laboratoire de Physique Nucléaire et de Hautes Énergies (LPNHE), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)-AstroParticule et Cosmologie (APC (UMR_7164)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Observatoire de Paris, and Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)
Subjects: Nuclear and High Energy Physics, Particle physics, Physics - Instrumentation and Detectors, [PHYS.ASTR.IM]Physics [physics]/Astrophysics [astro-ph]/Instrumentation and Methods for Astrophysic [astro-ph.IM], Physics::Instrumentation and Detectors, Solar neutrino, FOS: Physical sciences, 01 natural sciences, 7. Clean energy, NuMI, Nuclear physics, 0103 physical sciences, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], 010306 general physics, Neutrino oscillation, physics.ins-det, Instrumentation, Physics, 010308 nuclear & particles physics, High Energy Physics::Phenomenology, Instrumentation and Detectors (physics.ins-det), Solar neutrino problem, [SDU.ASTR.IM]Sciences of the Universe [physics]/Astrophysics [astro-ph]/Instrumentation and Methods for Astrophysic [astro-ph.IM], Neutrino detector, MINOS, Measurements of neutrino speed, Physics::Accelerator Physics, High Energy Physics::Experiment, Neutrino
Abstract: The Main Injector Neutrino Oscillation Search (MINOS) experiment uses an accelerator-produced neutrino beam to perform precision measurements of the neutrino oscillation parameters in the "atmospheric neutrino" sector associated with muon neutrino disappearance. This long-baseline experiment measures neutrino interactions in Fermilab's NuMI neutrino beam with a near detector at Fermilab and again 735 km downstream with a far detector in the Soudan Underground Laboratory in northern Minnesota. The two detectors are magnetized steel-scintillator tracking calorimeters. They are designed to be as similar as possible in order to ensure that differences in detector response have minimal impact on the comparisons of event rates, energy spectra and topologies that are essential to MINOS measurements of oscillation parameters. The design, construction, calibration and performance of the far and near detectors are described in this paper., Comment: Revised according to referee's comments. 91 pages, 43 figures, submitted to NIM. arXiv figures are greatly compressed, please see NIM itself or the Fermilab library server for full resolution figures
Published: 2008
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34. Measurement of Neutrino Oscillations with the MINOS Detectors in the NuMI Beam

Author: Jian Ma, M. A. Thomson, D. Naples, Stanley G. Wojcicki, J. Hylen, R. H. Bernstein, A. Para, M. C. Goodman, P. A. Symes, S. K. Kotelnikov, V. A. Ryabov, J. Schneps, S. A. Dytman, M. V. Diwan, Gregory J Pawloski, Jorge G. Morfin, R. A. Rameika, C. James, A. Holin, N. Tagg, R. Pittam, G.D. Barr, G. M. Irwin, K. E. Arms, R. P. Litchfield, M. Kordosky, A. Godley, John Marshall, Sacha E Kopp, R. Gran, G. J. Feldman, Andrew Blake, A. Sousa, C. P. Ward, P. J. Litchfield, Philippe Lucas, John Miller, Brajesh C Choudhary, Juergen Thomas, Peter D. Barnes, S. Murgia, M. Bishai, D. J. Auty, B. Baller, M. D. Messier, G. I. Merzon, W. Smart, Warner A. Miller, N. West, G. Tinti, P. Vahle, Harvey B Newman, J. L. Thron, H. A. Rubin, D. S. Ayres, S. Cavanaugh, P. Adamson, D. J. Boehnlein, J. J. Evans, M. Dierckxsens, R. Armstrong, D. R. Ward, T. Patzak, A. C. Weber, W. P. Oliver, P. Stamoulis, A. Rahaman, T. C. Nicholls, G. J. Bock, J. K. de Jong, A. E. Kreymer, B. Speakman, E. A. Peterson, S. M S Kasahara, R. Ospanov, Marvin L Marshak, S. J. Coleman, S. M. Seun, M. Dorman, M. Ishitsuka, Caleb Smith, A. M. McGowan, K. Ruddick, Niki Saoulidou, B. Rebel, G. F. Pearce, J. Boehm, Ken Heller, J. M. Paley, S. Kumaratunga, E. Buckley-Geer, P. Gouffon, B. R. Becker, A. A. Wehmann, P. A. Rodrigues, M. A. Tavera, M. Watabe, William L. Barrett, P. Shanahan, M. C. Sanchez, R. C. Webb, J. A. Thompson, C. Rosenfeld, R. Zwaska, A. J. Culling, Douglas Wright, D. Bogert, T. Kafka, W. A. Mann, D. Cherdack, B. Viren, A. Marchionni, J. K. Nelson, I. Trostin, Philip Harris, C. Andreopoulos, D. A. Jensen, M. S. Kim, R. L. Talaga, S. L. Mufson, L. Loiacono, J. J. Kim, D. E. Jaffe, V. A. Tsarev, David Petyt, A. Belias, Matthew L Strait, J. H. Cobb, T. M. Raufer, S. R. Mishra, N. Grossman, Ž Pavlović, Juan Pedro Ochoa-Ricoux, Carlos Escobar, R. K. Plunkett, E. Grashorn, K. Grzelak, P. Schreiner, John Derek Chapman, R. J. Nichol, C. J. Metelko, J. R. Meier, Alec Habig, J. Urheim, V. Paolone, C. R. Bower, S. Childress, R. Hatcher, E. Falk Harris, C. D. Moore, J. A. Musser, C. White, M. V. Frohne, T. Yang, A. Himmel, L. Mualem, D. G. Michael, M. Zois, N. Mayer, C. W. Peck, G. Tzanakos, K. Zhang, G. Koizumi, Karol Lang, J. Reichenbacher, D. J. Koskinen, H. R. Gallagher, D. A. Harris, D. Bhattacharya, J. Hartnell, APC - Neutrinos, Laboratoire de Physique Nucléaire et de Hautes Énergies (LPNHE), Centre National de la Recherche Scientifique (CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Centre National de la Recherche Scientifique (CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Pierre et Marie Curie - Paris 6 (UPMC)-AstroParticule et Cosmologie (APC (UMR_7164)), Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), MINOS, Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)-AstroParticule et Cosmologie (APC (UMR_7164)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), AstroParticule et Cosmologie (APC (UMR_7164)), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Observatoire de Paris, PSL Research University (PSL)-PSL Research University (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Observatoire de Paris, PSL Research University (PSL)-PSL Research University (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Laboratoire de Physique Nucléaire et de Hautes Énergies (LPNHE), and Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)
Subjects: Particle physics, Neutrino mass and mixing, [PHYS.ASTR.IM]Physics [physics]/Astrophysics [astro-ph]/Instrumentation and Methods for Astrophysic [astro-ph.IM], Physics::Instrumentation and Detectors, Solar neutrino, Astrophysics::High Energy Astrophysical Phenomena, FOS: Physical sciences, General Physics and Astronomy, 01 natural sciences, NuMI, High Energy Physics - Experiment, Nuclear physics, High Energy Physics - Experiment (hep-ex), Ordinary neutrinos (nuW bosons, 0103 physical sciences, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], 010306 general physics, Neutrino oscillation, Physics, 010308 nuclear & particles physics, Beams in particle accelerators, High Energy Physics::Phenomenology, Solar neutrino problem, [SDU.ASTR.IM]Sciences of the Universe [physics]/Astrophysics [astro-ph]/Instrumentation and Methods for Astrophysic [astro-ph.IM], Spectrometers and spectroscopic techniques, Neutrino detector, MINOS, Measurements of neutrino speed, High Energy Physics::Experiment, Neutrino
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 $|\Delta m^2|=(2.43\pm 0.13)\times10^{-3}$ eV$^2$ (68% confidence level) and mixing angle $\sin^2(2\theta)>0.90$ (90% confidence level). 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., Comment: 5 pages, 4 figures, submitted to Phys. Rev. Lett
Published: 2008
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35. Study of muon neutrino disappearance using the Fermilab Main Injector neutrino beam

Author: A. E. Kreymer, William L. Barrett, D. E. Jaffe, P. Shanahan, Carlos Escobar, B. Bock, Marvin L Marshak, R. K. Plunkett, E. Buckley-Geer, W. A. Mann, D. Cherdack, Ken Heller, John Derek Chapman, T. Osiecki, A. Sousa, John Marshall, R. H. Milburn, A. Holin, E. P. Hartouni, G. I. Merzon, N. West, C. J. Metelko, J. R. Meier, V. Smirnitsky, C. Andreopoulos, P. J. Litchfield, D. S. Ayres, P. Lucas, P. Gouffon, S. Murgia, J. J. Evans, D. E. Reyna, A. Himmel, L. Loiacono, B. Viren, L. Mualem, B. Speakman, V. A. Ryabov, L. Jenner, D. J. Auty, Raymond Lee, P. M. Border, Matthew L Strait, C. W. Peck, S. Childress, A. Lebedev, R. L. Talaga, M. Ishitsuka, R. J. Nichol, Harvey B Newman, Karol Lang, E. Falk Harris, J. H. Cobb, Peter D. Barnes, C. D. Moore, N. Grossman, T. Yang, P. Adamson, S. J. Coleman, Caleb Smith, David Petyt, A. D. Marino, R. A. Rameika, T. M. Raufer, H. Ping, Warner A. Miller, T. H. Fields, J. M. Paley, Douglas Wright, Anatael Cabrera, A. A. Wehmann, Jorge G. Morfin, T. Durkin, G. M. Irwin, A. Godley, J. Gogos, Ž Pavlović, D. Bhattacharya, Juan Pedro Ochoa-Ricoux, N. Tagg, Alec Habig, J. Hartnell, P. A. Rodrigues, Ji-Yong Liu, C. James, G. J. Feldman, M. Watabe, G.D. Barr, G. J. Bock, S. L. Mufson, B. Baller, D. J. Koskinen, J. K. de Jong, John Miller, P. A. Symes, Juergen Thomas, D. Bogert, T. C. Nicholls, D. R. Ward, T. Patzak, H. A. Rubin, K. E. Arms, R. Zwaska, A. J. Culling, E. Beall, T. Kafka, M. Kordosky, S. M. Seun, K. Grzelak, M. Dorman, R. C. Webb, J. A. Thompson, Ruben Saakyan, Sacha E Kopp, R. Gran, S. R. Mishra, D. Rahman, A. Marchionni, Andrew Blake, I. Trostin, Niki Saoulidou, R. Armstrong, W. P. Oliver, G. F. Pearce, R. Ford, S. Avvakumov, A. Belias, V. Verebryusov, R. P. Litchfield, A. Mislivec, R. Hatcher, E. A. Peterson, M. Bishai, Christopher P. Ward, B. R. Becker, D. G. Michael, Brajesh C Choudhary, A. R. Erwin, C. Rosenfeld, M. Zois, H. Zheng, V. A. Tsarev, G. Tinti, B. Rebel, J. Boehm, D. Indurthy, W. Smart, P. Schreiner, J. Urheim, V. Paolone, C. R. Bower, J. A. Musser, V. K. Semenov, C. White, P. Vahle, S. Cavanaugh, D. Drakoulakos, D. J. Boehnlein, A. C. Weber, S. M S Kasahara, M. Dierckxsens, E. Grashorn, A. M. McGowan, K. Ruddick, R. Pittam, H. J. Kang, S. K. Kotelnikov, J. Schneps, M. V. Frohne, B. C. Barish, E. Tetteh-Lartey, J. K. Nelson, S. A. Dytman, M. V. Diwan, Philip Harris, D. A. Jensen, M. S. Kim, M. D. Messier, S. Kumaratunga, Mcd Sanchez, J. L. Thron, C. Howcroft, G. Tzanakos, G. Koizumi, M. A. Thomson, N. Mayer, D. Naples, Stanley G. Wojcicki, R. Ospanov, J. Reichenbacher, J. Hylen, R. H. Bernstein, A. Para, M. C. Goodman, H. R. Gallagher, D. A. Harris, P. Stamoulis, APC - Neutrinos, Laboratoire de Physique Nucléaire et de Hautes Énergies (LPNHE), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)-AstroParticule et Cosmologie (APC (UMR_7164)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Centre National de la Recherche Scientifique (CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Centre National de la Recherche Scientifique (CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Pierre et Marie Curie - Paris 6 (UPMC)-AstroParticule et Cosmologie (APC (UMR_7164)), Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), AstroParticule et Cosmologie (APC (UMR_7164)), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Observatoire de Paris, PSL Research University (PSL)-PSL Research University (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Observatoire de Paris, PSL Research University (PSL)-PSL Research University (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Laboratoire de Physique Nucléaire et de Hautes Énergies (LPNHE), and Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)
Subjects: Nuclear and High Energy Physics, Particle physics, [PHYS.ASTR.IM]Physics [physics]/Astrophysics [astro-ph]/Instrumentation and Methods for Astrophysic [astro-ph.IM], Physics::Instrumentation and Detectors, Solar neutrino, FOS: Physical sciences, 7. Clean energy, 01 natural sciences, High Energy Physics - Experiment, Nuclear physics, High Energy Physics - Experiment (hep-ex), 0103 physical sciences, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], Fermilab, 010306 general physics, Neutrino oscillation, Physics, 010308 nuclear & particles physics, Solar neutrino problem, [SDU.ASTR.IM]Sciences of the Universe [physics]/Astrophysics [astro-ph]/Instrumentation and Methods for Astrophysic [astro-ph.IM], Neutrino detector, MINOS, Physics::Accelerator Physics, Measurements of neutrino speed, High Energy Physics::Experiment, Neutrino
Abstract: We report the results of a search for muon-neutrino disappearance by the Main Injector Neutrino Oscillation Search. The experiment uses two detectors separated by 734 km to observe a beam of neutrinos created by the Neutrinos at the Main Injector facility at Fermi National Accelerator Laboratory. The data were collected in the first 282 days of beam operations and correspond to an exposure of 1.27e20 protons on target. Based on measurements in the Near Detector, in the absence of neutrino oscillations we expected 336 +/- 14 muon-neutrino charged-current interactions at the Far Detector but observed 215. This deficit of events corresponds to a significance of 5.2 standard deviations. The deficit is energy dependent and is consistent with two-flavor neutrino oscillations according to delta m-squared = 2.74e-3 +0.44/-0.26e-3 eV^2 and sin^2(2 theta) > 0.87 at 68% confidence level., In submission to Phys. Rev. D
Published: 2008
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36. Testing Lorentz Invariance and CPT Conservation with NuMI Neutrinos in the MINOS Near Detector

Author: K. Grzelak, A. Belias, T. C. Nicholls, A. E. Kreymer, E. Grashorn, Marvin L Marshak, C. Rosenfeld, P. Adamson, K. E. Arms, P. Schreiner, G. M. Irwin, D. E. Jaffe, John Marshall, A. C. Weber, Sacha E Kopp, R. Gran, R. Zwaska, A. J. Culling, S. L. Mufson, A. Rahaman, J. Urheim, G. J. Feldman, Ken Heller, V. Paolone, C. R. Bower, W. Smart, R. Ospanov, P. Lucas, D. Bogert, S. M S Kasahara, M. A. Tavera, M. Zois, A. Sousa, J. Schneps, A. M. McGowan, D. G. Michael, B. Rebel, J. A. Musser, J. K. De Jong, H. A. Rubin, N. Grossman, M. Ishitsuka, P. J. Litchfield, John Derek Chapman, A. Holin, S. A. Dytman, M. D. Messier, S. Childress, P. Vahle, M. Kordosky, Carlos Escobar, S. Cavanaugh, P. Gouffon, S. Murgia, Jian Ma, M. A. Thomson, C. J. Metelko, Christopher G. White, R. J. Nichol, R. C. Webb, J. R. Meier, J. A. Thompson, Andrew Blake, R. K. Plunkett, D. Naples, R. Armstrong, D. J. Boehnlein, E. Falk Harris, M. Bishai, B. Baller, C. D. Moore, Stanley G. Wojcicki, W. P. Oliver, S. Kumaratunga, Alec Habig, D. J. Auty, Philip Harris, H. R. Gallagher, N. West, M. V. Frohne, J. Hylen, R. H. Bernstein, A. Para, T. Yang, M. C. Goodman, D. A. Harris, Matthew L Strait, M. V. Diwan, A. Himmel, C. W. Peck, L. Mualem, D. S. Ayres, K. Zhang, J. Boehm, R. Pittam, P. Stamoulis, D. Bhattacharya, J. J. Evans, J. Hartnell, J. K. Nelson, D. Cherdack, T. Patzak, Karol Lang, Ž Pavlović, Warner A. Miller, N. Mayer, Juan Pedro Ochoa-Ricoux, R. Hatcher, B. Speakman, G. Tinti, William L. Barrett, D. A. Jensen, P. Shanahan, G. J. Bock, C. Andreopoulos, D. J. Koskinen, L. Loiacono, W. A. Mann, P. A. Rodrigues, M. Watabe, G. Tzanakos, T. Kafka, G. Koizumi, J. Reichenbacher, J. J. Kim, E. Buckley-Geer, R. A. Rameika, M. Dorman, Niki Saoulidou, G. F. Pearce, B. R. Becker, R. P. Litchfield, M. C. Sanchez, Brajesh C Choudhary, Gregory J Pawloski, Jorge G. Morfin, C. James, David Petyt, T. M. Raufer, S. R. Mishra, S. J. Coleman, J. M. Paley, A. A. Wehmann, N. Tagg, G.D. Barr, John Miller, Juergen Thomas, Harvey B Newman, J. L. Thron, B. Viren, R. L. Talaga, APC - Neutrinos, Laboratoire de Physique Nucléaire et de Hautes Énergies (LPNHE), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)-AstroParticule et Cosmologie (APC (UMR_7164)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), MINOS, Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Observatoire de Paris, PSL Research University (PSL)-PSL Research University (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Observatoire de Paris, PSL Research University (PSL)-PSL Research University (PSL)-Université Paris Diderot - Paris 7 (UPD7), Centre National de la Recherche Scientifique (CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Centre National de la Recherche Scientifique (CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Pierre et Marie Curie - Paris 6 (UPMC)-AstroParticule et Cosmologie (APC (UMR_7164)), Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Observatoire de Paris, and Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)
Subjects: Particle physics, Neutrino mass and mixing, [PHYS.ASTR.IM]Physics [physics]/Astrophysics [astro-ph]/Instrumentation and Methods for Astrophysic [astro-ph.IM], CPT symmetry, Physics::Instrumentation and Detectors, Lorentz transformation, time reversal, Charge conjugation, General Physics and Astronomy, FOS: Physical sciences, Lorentz covariance, Lorentz and Poincare invariance, 01 natural sciences, NuMI, High Energy Physics - Experiment, symbols.namesake, High Energy Physics - Experiment (hep-ex), High Energy Physics - Phenomenology (hep-ph), 0103 physical sciences, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], 010306 general physics, Neutrino oscillation, and other discrete symmetries, Physics, 010308 nuclear & particles physics, High Energy Physics::Phenomenology, [SDU.ASTR.IM]Sciences of the Universe [physics]/Astrophysics [astro-ph]/Instrumentation and Methods for Astrophysic [astro-ph.IM], High Energy Physics - Phenomenology, MINOS, parity, symbols, Measurements of neutrino speed, High Energy Physics::Experiment, Neutrino
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. © 2008 The American Physical Society.
Published: 2008
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37. Λ[sup 0] Polarization in pp→pΛ[sup 0]K[sup +] at 800 GeV∕c

Author: E. Valencia, J. Félix, M. H. L. S. Wang, M. C. Berisso, D. C. Christian, A. Gara, E. Gottschalk, G. Gutiérrez, E. P. Hartouni, B. C. Knapp, M. N. Kreisler, S. Lee, K. Markianos, M. A. Reyes, A. Wehmann, D. Wesson, Heriberto Castilla-Valdez, Omar Miranda, and Eli Santos
Subjects: Nuclear physics, Baryon, Physics, Angular momentum, Particle physics, Meson, Proton, Hadron, Momentum transfer, Lambda baryon, Nucleon
Abstract: We determined Λ0 polarization as function of XF, PT, MX, and EΛ, with respect to the normal of the following two different production planes: The first one defined by the momentum of the 800 GeV/c proton beam and the moment of Λ0; the second one, by the momentum of the transferred object and the momentum of Λ0, from the sample created in the FNAL E690 experiment. We present results, compare and discuss them.
Published: 2008
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38. Measurement of the atmospheric muon charge ratio at TeV energies with the MINOS detector

Author: V. A. Ryabov, R. Armstrong, W. P. Oliver, R. Pittam, T. H. Fields, Harvey B Newman, Jorge G. Morfin, C. James, M. A. Thomson, D. Naples, Stanley G. Wojcicki, M. V. Frohne, D. Indurthy, S. Murgia, N. Tagg, J. Hylen, R. H. Bernstein, A. Para, S. M. Seun, M. Dorman, T. Patzak, R. P. Litchfield, D. J. Auty, M. C. Goodman, G.D. Barr, Niki Saoulidou, T. Durkin, G. F. Pearce, A. Lebedev, B. C. Barish, G. A. Giurgiu, R. Zwaska, D. Cherdack, L. Mualem, D. Bhattacharya, A. J. Culling, E. Beall, B. Baller, Brajesh C Choudhary, J. Hartnell, J. K. De Jong, P. Lucas, A. Holin, S. K. Kotelnikov, D. Drakoulakos, T. M. Raufer, David Petyt, J. Schneps, John Miller, Juergen Thomas, Warner A. Miller, D. E. Jaffe, G. M. Irwin, B. Rebel, S. Kumaratunga, D. E. Reyna, V. K. Semenov, C. Andreopoulos, E. P. Hartouni, A. Mislivec, H. J. Kang, A. Marchionni, G. J. Feldman, M. Ishitsuka, R. C. Webb, S. R. Mishra, D. Rahman, M. V. Diwan, R. J. Nichol, A. M. McGowan, K. Ruddick, R. Piteira, E. Falk Harris, C. D. Moore, C. Howcroft, G. Tzanakos, Caleb Smith, J. M. Paley, J. A. Thompson, A. Godley, P. Vahle, A. Belias, S. Avvakumov, P. Adamson, R. H. Milburn, Mcd Sanchez, E. Tetteh-Lartey, A. A. Wehmann, T. C. Nicholls, John Marshall, G. Koizumi, B. R. Becker, D. J. Boehnlein, Douglas Wright, Anatael Cabrera, J. J. Evans, V. Smirnitsky, J. L. Thron, N. Mayer, W. Smart, H. Zheng, S. L. Mufson, M. Bishai, H. Ping, J. Reichenbacher, P. A. Symes, B. Speakman, D. J. Koskinen, K. Grzelak, Juan Pedro Ochoa-Ricoux, Philip Harris, P. M. Border, Ž Pavlović, P. Gouffon, C. Bungau, M. Kordosky, P. Stamoulis, P. Schreiner, T. Bergfeld, A. E. Kreymer, R. Ford, C. P. Ward, R. Lee, M. Watabe, B. Viren, D. Bogert, J. K. Nelson, I. Trostin, Marvin L Marshak, T. Kafka, J. Urheim, V. Paolone, C. R. Bower, E. A. Peterson, S. Childress, H. R. Gallagher, D. A. Jensen, M. S. Kim, G. Tinti, K. E. Arms, D. A. Harris, G. I. Merzon, Ken Heller, Ruben Saakyan, Sacha E Kopp, R. Gran, J. A. Musser, Carlos Escobar, M. D. Messier, A. De Santo, N. West, C. White, C. W. Peck, R. A. Rameika, R. K. Plunkett, C. Rosenfeld, V. A. Tsarev, Q. K. Wu, Karol Lang, D. S. Ayres, P. S. Miyagawa, D. G. Michael, J. Gogos, Andrew Blake, Alec Habig, M. Zois, L. Jenner, R. Ospanov, J. Boehm, E. Buckley-Geer, T. Joffe-Minor, Jie Liu, G. J. Bock, A. D. Marino, V. Verebryusov, D. R. Ward, Peter D. Barnes, J. H. Cobb, R. Hatcher, N. Grossman, T. Osiecki, A. Sousa, Francisco Yumiceva, R. L. Talaga, A. R. Erwin, P. J. Litchfield, John Derek Chapman, J. R. Meier, T. Yang, M. Dierckxsens, C. Velissaris, E. Grashorn, A. C. Weber, William L. Barrett, P. Shanahan, B. Bock, W. A. Mann, S. M S Kasahara, H. A. Rubin, APC - Neutrinos, Laboratoire de Physique Nucléaire et de Hautes Énergies (LPNHE), Centre National de la Recherche Scientifique (CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Centre National de la Recherche Scientifique (CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Pierre et Marie Curie - Paris 6 (UPMC)-AstroParticule et Cosmologie (APC (UMR_7164)), Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), MINOS, Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)-AstroParticule et Cosmologie (APC (UMR_7164)), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Observatoire de Paris, PSL Research University (PSL)-PSL Research University (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Observatoire de Paris, PSL Research University (PSL)-PSL Research University (PSL)-Université Paris Diderot - Paris 7 (UPD7), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Observatoire de Paris, and Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)
Subjects: Physics, Nuclear and High Energy Physics, Particle physics, Range (particle radiation), Background radiations, Muon, [PHYS.ASTR.IM]Physics [physics]/Astrophysics [astro-ph]/Instrumentation and Methods for Astrophysic [astro-ph.IM], 010308 nuclear & particles physics, Physics::Instrumentation and Detectors, Cosmic ray, Charge (physics), 7. Clean energy, 01 natural sciences, Particle identification, Magnetic field, Standard Model, [SDU.ASTR.IM]Sciences of the Universe [physics]/Astrophysics [astro-ph]/Instrumentation and Methods for Astrophysic [astro-ph.IM], Nuclear physics, MINOS, 0103 physical sciences, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], High Energy Physics::Experiment, 010306 general physics
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.
Published: 2007
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39. Λ0 Polarization In pp→p[sub f]p[sub s]Λ[sup 0]anti]-Λ[sup 0] At 800-GeV/c

Author: Jorge A. Castorena, E. P. Hartouni, Juan C. Felix, K. Markianos, M. C. Berisso, A. Gara, G. Gutierrez, M. A. Reyes, M. H. L. S. Wang, A. A. Wehmann, D. C. Christian, G. Moreno, D. Wesson, M. N. Kreisler, S. Lee, E. E. Gottschalk, and B. C. Knapp
Subjects: Nuclear physics, Physics, Particle physics, Transverse momentum, Hyperon, Subatomic particle, Polarization (waves), Lambda baryon
Abstract: The preliminary results of a Λ0 and anti‐Λ0 polarization study as functions of the M(Λ‐bΛ), XF and their corresponding PT are reported in this work.
Published: 2007
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40. Upgrades to the Fermilab NuMI beamline

Author: M.A. Martens, C.D. Moore, A. Marchionni, R. Zwaska, Salman Tariq, K. Williams, N. Grossman, P. Hurh, A. Wehmann, S. Childress, R. Reilly, E. McCluskey, and J. Hylen
Subjects: Physics, Nuclear physics, Upgrade, Beamline, MINOS, law, Particle accelerator, Fermilab, Neutrino, Storage ring, NuMI, law.invention
Abstract: The NuMI beamline at Fermilab has been delivering high-intensity muon neutrino beams to the MINOS experiment since the spring of 2005. A total of 3.4 times 1020 protons has been delivered to the NuMI target and a maximum beam power of 320 kW has been achieved. An upgrade of the NuMI facility increasing the beam power capability to 700 kW is planned as part of the NOvA experiment. The plans for this upgrade are presented and the possibility of upgrading the NuMI beamline to handle 1.2 MW is considered.
Published: 2007
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41. First observations of separated atmosphericνμandν¯μevents in the MINOS detector

Author: P. A. Symes, J. Boehm, Douglas Wright, Anatael Cabrera, H. A. Rubin, D. Krakauer, S. Childress, S. L. Mufson, J. Urheim, W. P. Oliver, M. Bishai, V. Paolone, C. R. Bower, A. Godley, Marvin L Marshak, C. Arroyo, C. Howcroft, R. Halsall, C.D. Moore, Z. Pavlovich, Ken Heller, H. Zheng, A. Lebedev, S. Chernichenko, J. A. Musser, S. Madani, G. Tzanakos, S. Kumaratunga, P. Stamoulis, T. H. Fields, D. Bogert, L. Mualem, A. L. Read, D. M. DeMuth, M. J. Murtagh, F. A. Nezrick, V. Verebryusov, C. White, T. Bergfeld, Thomas R. Chase, R. Rameika, W. G. Yan, R. Morse, D. Naples, A. J. Culling, D. Crane, M. V. Diwan, V. K. Semenov, G. Koizumi, C. Perry, A. Stefanik, P. Vahle, B. Speakman, A. De Santo, Randall White, E. Beall, W. Luebke, A. Wehmann, R. Ducar, D. J. Boehnlein, C. Laughton, J. Kilmer, R. Saakyan, M. Kordosky, William L. Barrett, P. Shanahan, B. R. Becker, R. H. Milburn, Carlos Escobar, B. Bock, R. Hatcher, J. McDonald, Andrew Blake, R. K. Plunkett, S. Murgia, M. C. Sanchez, Reinhard Schwienhorst, J. W. Dawson, C. Rosenfeld, M. Watabe, E. P. Hartouni, J. L. Thron, C. W. Peck, V. J. Guarino, J. Hanson, E. A. Peterson, R. P. Litchfield, Q. K. Wu, C. Nelson, I. Trostin, B. Baller, A. R. Erwin, R. C. Webb, Sacha E Kopp, J. A. Thompson, Robert H. Bernstein, H. R. Gallagher, R. Andrews, A. D. Marino, P. S. Miyagawa, R. Trendler, Alec Habig, M. A. Barker, H. Courant, Karol Lang, A. Belias, D. A. Harris, V. Bocean, P. Sullivan, T. Kafka, W. A. Mann, V. A. Tsarev, Theodoros Alexopoulos, C. Velissaris, S. Boyd, K. Grzelak, E. Grashorn, J. J. Grudzinski, M. A. Thomson, Paul Schoessow, David Petyt, C. Andreopoulos, H. Ping, M. Vakili, Yu. A. Gornushkin, Stanley G. Wojcicki, D. E. Reyna, P. J. Litchfield, Brajesh C Choudhary, John Marshall, R. Piteira, P.D. Shield, R. J. Nichol, J. Hylen, A. Para, J. M. Swan, Juan Pedro Ochoa-Ricoux, W. Smart, D. J. Koskinen, S. R. Mishra, E. Buckley-Geer, P. Schreiner, Y. Ho, T. Yang, D. Rahman, E. Maher, M. C. Goodman, D. Bhattacharya, M. P. Andrews, S. Avvakumov, J. Hartnell, C. P. Ward, V.A. Onuchin, S. M. Seun, Warner A. Miller, M. Dorman, N. P. Longley, E. Falk Harris, P. Adamson, J. Schneps, M. Proga, D. R. Pushka, Niki Saoulidou, Peter D. Barnes, G. F. Pearce, D. R. Ward, T. Patzak, John Derek Chapman, V. A. Ryabov, D. G. Michael, J. Trevor, J. R. Meier, R. Lee, M. Gebhard, G. J. Alner, J. H. Cobb, T. C. Nicholls, R. Ford, V. Makeev, N. Grossman, Jorge G. Morfin, C. James, W. Y. Lee, N. Felt, J. Oliver, T. Osiecki, A. Sousa, Francisco Yumiceva, M. Dierckxsens, A. C. Weber, R. L. Talaga, T. Joffe-Minor, M. Ignatenko, G. I. Merzon, N. West, M. Zois, H. J. Kang, D. S. Ayres, S. M S Kasahara, L. Wai, Hyun-Chul Kim, L. Jenner, J. K. Nelson, D. A. Jensen, K. Vaziri, M. D. Messier, J. C. Yun, J. D. Cossairt, W.W.M. Allison, R. Ospanov, P. N. Smith, M. A. Libkind, J. Gogos, N. Hill, Ji-Yong Liu, G. J. Bock, T. Durkin, B. Rebel, L. E. Price, P. Lucas, J. J. Evans, M. Kostin, Harvey B Newman, T. M. Raufer, O. D. Fackler, G. M. Irwin, Kevin Anderson, R. Zwaska, A. Marchionni, G. J. Feldman, Caleb Smith, A. Byon-Wagner, A. Pla-Dalmau, J. M. Paley, V. Smirnitsky, P. M. Border, G. Drake, A. M. McGowan, K. Ruddick, N. Tagg, A. S. Ladran, G.D. Barr, E. Tetteh-Lartey, John Miller, Juergen Thomas, P. Gouffon, B. Viren, Philip Harris, M. V. Frohne, D. Indurthy, N. Pearson, and B. C. Barish
Subjects: Physics, Nuclear and High Energy Physics, Particle physics, Muon, Physics::Instrumentation and Detectors, 010308 nuclear & particles physics, Astrophysics::High Energy Astrophysical Phenomena, High Energy Physics::Phenomenology, 01 natural sciences, Nuclear physics, Massless particle, Neutrino detector, MINOS, 0103 physical sciences, High Energy Physics::Experiment, Muon neutrino, Neutrino, 010306 general physics, Neutrino oscillation, Lepton
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 muon neutrino and muon anti-neutrino 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_data(up/down)/R_MC(up/down) = 0.62^{+0.19}_{-0.14} (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 muon neutrino and muon anti-neutrino interactions are separated. The ratio of muon neutrino to muon anti-neutrino events in the data is compared to the Monte Carlo expectation assuming neutrinos and anti-neutrinos oscillate in same manner giving: R_data(numubar/numu)/R_MC(numubar/numu) = 0.96^{+0.38}_{-0.27} (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 muon neutrinos and muon anti-neutrinos.
Published: 2006
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42. Λ0 POLARIZATION IN pp → pΛ0K+(π+π-)5 AT 27.5 GeV

Author: D. A. Jensen, G. Gutierrez, B. J. Stern, S. D. Holmes, M. D. Church, Julián Félix, E. P. Hartouni, B. C. Knapp, M. H. L. S. Wang, M. Forbush, D. C. Christian, J. T. White, J. Uribe, L. R. Wiencke, M. N. Kreisler, E. E. Gottschalk, F. R. Huson, and A. Wehmann
Subjects: Physics, Atomic physics, Polarization (waves)
Published: 2006
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43. Exotic baryon searches in 800 GeV/c pp → pX

Author: A. A. Wehmann, B. C. Knapp, Julián Félix, G. Gutierrez, M. N. Kreisler, M. A. Reyes, Modesto Sosa, E. P. Hartouni, Erik Gottschalk, E. Lopez, I. Perez, M. H. L. S. Wang, G. Moreno, and D. C. Christian
Subjects: Nuclear physics, Physics, Baryon, Particle physics, Pion, Exotic baryon, Hyperon, Resonance, High Energy Physics::Experiment, Fermilab, Nuclear Experiment, Pentaquark, Xi baryon
Abstract: We report the results of the search for the pentaquark candidates Θ(1540) and Ⅺ(1862) using data from Fermilab experiment E690 in the reaction pp → pX at 800 GeV/c. We find no evidence for narrow baryon resonances near 1862 MeV decaying to Ⅺπ. Also, we find no evidence of a narrow resonance near 1540 MeV decaying to pKs0.
Published: 2006
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44. Observation of muon neutrino disappearance with the MINOS detectors and the NuMI neutrino beam

Author: C. Velissaris, P. Stamoulis, A. Godley, A. E. Kreymer, E. Grashorn, B. Speakman, M. Gebhard, R. Piteira, D. J. Koskinen, J. Hanson, B. C. Choudhary, H. A. Rubin, N. P. Longley, C. W. Peck, F. A. Nezrick, Mcd Sanchez, T. Patzak, H. Courant, Karol Lang, V. Bocean, M. Dorman, N. Hill, R. Ford, G. Tzanakos, Douglas Wright, Anatael Cabrera, A. Holin, J. W. Dawson, D. G. Michael, M. Zois, M. P. Andrews, O. Fackler, T. Joffe-Minor, Marvin L Marshak, C. Howcroft, G. Koizumi, V. Smirnitsky, J. M. Swan, M. Watabe, R. Armstrong, W. P. Oliver, G. I. Merzon, N. West, Ken Heller, N. Mayer, E. A. Peterson, T. Kafka, P. A. Symes, S. M. Seun, D. S. Ayres, P. M. Border, J. Reichenbacher, Weonjong Lee, A. Stefanik, N. Tagg, S. L. Mufson, L. Jenner, E. P. Hartouni, J. J. Evans, Niki Saoulidou, G. F. Pearce, B. Baller, R. A. Rameika, T. Osiecki, M. J. Murtagh, B. Rebel, V. Verebryusov, V. A. Ryabov, Randall White, A. Sousa, Francisco Yumiceva, G.D. Barr, V. Makeev, Jorge G. Morfin, S. Boyd, D. Krakauer, R. L. Talaga, P. S. Miyagawa, William L. Barrett, P. Shanahan, B. Bock, E. Beall, S. Childress, Y. Ho, John Miller, C. James, Juergen Thomas, P. J. Litchfield, John Marshall, G. J. Alner, A. Mislivec, C. Arroyo, H. R. Gallagher, Carole C. Perry, M. Dierckxsens, Andrew Blake, R. P. Litchfield, T. C. Nicholls, Yu. A. Gornushkin, D. Rahman, T. Alexopoulos, D. A. Harris, T. H. Fields, J. Trevor, J. H. Cobb, K. Grzelak, N. Grossman, R. Hatcher, A. R. Erwin, V. J. Guarino, M. Bishai, S. Madani, A. D. Marino, J. Gogos, H. Zheng, G. A. Giurgiu, T. Durkin, D. R. Ward, A. C. Weber, M. Ignatenko, Ji-Yong Liu, S. Avvakumov, J. J. Grudzinski, D. M. DeMuth, N. Felt, E. Buckley-Geer, J. Oliver, Thomas R. Chase, G. J. Bock, J. K. de Jong, W. G. Yan, S. Murgia, R. Morse, R. Lee, B. Viren, C. P. Ward, D. Bhattacharya, John Derek Chapman, T. Bergfeld, M. Libkind, D. Pushka, J. Hartnell, P.D. Shield, A. J. Culling, D. Crane, S. Chernichenko, S. M S Kasahara, L. Wai, D. J. Auty, D. Cherdack, A. Lebedev, B. R. Becker, Carlos Escobar, W. Luebke, S. Kumaratunga, J. R. Meier, J. K. Nelson, M. Vakili, L. E. Price, R. K. Plunkett, G. Tinti, K. E. Arms, R. Trendler, Peter D. Barnes, Kevin Anderson, Caleb Smith, Ruben Saakyan, Sacha E Kopp, R. Gran, Paul Schoessow, D. E. Reyna, S.R. Mishra, P. Lucas, T. Yang, Warner A. Miller, J. M. Paley, C. Andreopoulos, E. Maher, M. Kostin, Juan Pedro Ochoa-Ricoux, D. E. Jaffe, Harvey B Newman, J. L. Thron, E. Falk Harris, C. D. Moore, L. Mualem, A. L. Read, A. A. Wehmann, P. Adamson, C. Bungau, M. Proga, T. M. Raufer, M. V. Frohne, R. Halsall, M. Ishitsuka, W. Smart, V.A. Onuchin, G. M. Irwin, G. J. Feldman, J. McDonald, A. Pla-Dalmau, D. Drakoulakos, A. Byon-Wagner, R. H. Milburn, Reinhard Schwienhorst, W. A. Mann, R. J. Nichol, J. Boehm, Q. K. Wu, R. C. Webb, P. Gouffon, J. A. Thompson, Alec Habig, A. Belias, M. A. Barker, P. Schreiner, J. Urheim, V. Paolone, C. R. Bower, V. K. Semenov, J. A. Musser, A. De Santo, P. Vahle, C. White, D. J. Boehnlein, C. Laughton, M. Kordosky, Ž Pavlović, D. Bogert, R. Pittam, C. Nelson, A. Marchionni, I. Trostin, Alexander Terekhov, C. Rosenfeld, V. A. Tsarev, D. Indurthy, N. Pearson, B. C. Barish, H. J. Kang, Hyun-Chul Kim, G. Drake, A. M. McGowan, K. Ruddick, D. A. Jensen, M. S. Kim, A. S. Ladran, K. Vaziri, E. Tetteh-Lartey, R. Ducar, M. D. Messier, Philip Harris, J. C. Yun, J. D. Cossairt, W.W.M. Allison, R. Ospanov, P. N. Smith, P. Sullivan, M. A. Thomson, D. Naples, Stanley G. Wojcicki, J. Hylen, R. H. Bernstein, A. Para, M. C. Goodman, M. V. Diwan, J. Kilmer, D. A. Petyt, H. Ping, S. K. Kotelnikov, J. Schneps, R. Andrews, R. Zwaska, AstroParticule et Cosmologie (APC (UMR_7164)), Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), MINOS, Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Observatoire de Paris, and PSL Research University (PSL)-PSL Research University (PSL)-Université Paris Diderot - Paris 7 (UPD7)
Subjects: Particle physics, Physics::Instrumentation and Detectors, General Physics and Astronomy, FOS: Physical sciences, Q1, 01 natural sciences, NuMI, High Energy Physics - Experiment, Nuclear physics, High Energy Physics - Experiment (hep-ex), 0103 physical sciences, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], Muon neutrino, Fermilab, 010306 general physics, Neutrino oscillation, QC, Physics, Muon, 010308 nuclear & particles physics, MINOS, 14.60.Lm, 14.60.Pq, 29.27.-a, 29.30.-h, Physics::Accelerator Physics, High Energy Physics::Experiment, Neutrino, Lepton
Abstract: This letter reports results from the MINOS experiment based on its initial exposure to neutrinos from the Fermilab NuMI beam. The rate and energy spectra of charged current muon neutrino interactions are compared in two detectors located along the beam axis at distances of 1 km 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 \pm 14.4 events. The data are consistent with muon neutrino disappearance via oscillation with |\Delta m^2_{23}| = 2.74^{+0.44}_{-0.26} x 10^{-3} eV^2/c^4 and sin^2(2\theta_{23}) > 0.87 (at 60% C.L.)., Comment: To be submitted to PRL. 6 pages, 4 figures
Published: 2006
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45. Search for Exotic Baryons in 800 GeVpp→pΞ±π±XReactions

Author: G. Gutierrez, G. Moreno, Erik Gottschalk, D. C. Christian, B. C. Knapp, A. A. Wehmann, E. P. Hartouni, Julián Félix, M. H.L.S. Wang, M. N. Kreisler, Modesto Sosa, and Marco A. Reyes
Subjects: Baryon, Physics, Particle physics, Crystallography, Exotic baryon, Hyperon, Pi, General Physics and Astronomy, Exotic hadron
Abstract: We report the results of a high-statistics, sensitive search for narrow baryon resonances decaying to ${\ensuremath{\Xi}}^{\ensuremath{-}}{\ensuremath{\pi}}^{\ensuremath{-}}$, ${\ensuremath{\Xi}}^{\ensuremath{-}}{\ensuremath{\pi}}^{+}$, ${\overline{\ensuremath{\Xi}}}^{+}{\ensuremath{\pi}}^{\ensuremath{-}}$, and ${\overline{\ensuremath{\Xi}}}^{+}{\ensuremath{\pi}}^{+}$. The only resonances observed are the well known ${\ensuremath{\Xi}}^{0}(1530)$ and ${\overline{\ensuremath{\Xi}}}^{0}(1530)$. No evidence is found for the states near 1862 MeV, previously reported by NA49 [Phys. Rev. Lett. 92, 042003 (2003)]. At the 95% confidence level, we find the upper limit for the production of a Gaussian enhancement with $\ensuremath{\sigma}=7.6\text{ }\text{ }\mathrm{MeV}$ in the ${\ensuremath{\Xi}}^{\ensuremath{-}}{\ensuremath{\pi}}^{\ensuremath{-}}$ effective mass spectrum to be 0.3% of the number of observed ${\ensuremath{\Xi}}^{0}(1530)\ensuremath{\rightarrow}{\ensuremath{\Xi}}^{\ensuremath{-}}{\ensuremath{\pi}}^{+}$. We find similarly restrictive upper limits for an enhancement at 1862 MeV in the ${\ensuremath{\Xi}}^{\ensuremath{-}}{\ensuremath{\pi}}^{+}$, ${\overline{\ensuremath{\Xi}}}^{+}{\ensuremath{\pi}}^{\ensuremath{-}}$, and ${\overline{\ensuremath{\Xi}}}^{+}{\ensuremath{\pi}}^{+}$ mass spectra.
Published: 2005
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46. Λ0 POLARIZATION IN pp → pΛ0K+ (π+π−)5 AT 27.5 GeV

Author: G. Gutierrez, M. H. L. S. Wang, L. R. Wiencke, M. N. Kreisler, B. J. Stern, M. Forbush, D. A. Jensen, B. C. Knapp, Julián Félix, J. T. White, F. R. Huson, S. D. Holmes, M. D. Church, A. Wehmann, E. P. Hartouni, D. C. Christian, J. Uribe, and E. E. Gottschalk
Subjects: Physics, Atomic physics, Polarization (waves)
Published: 2005
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47. FNAL-E690: Charm, Light Meson, and Baryon Polarization Studies

Author: M. A. Reyes, D. C. Christian, S. Lee, D. Wesson, B. C. Knapp, M. H. L. S. Wang, E. P. Hartouni, G. Gutierrez, E. E. Gottschalk, A. A. Wehmann, G. Moreno, A. Gara, Juan C. Felix, M. N. Kreisler, M. C. Berisso, and K. Markianos
Subjects: Physics, Particle physics, Meson production, Meson, Nuclear Theory, High Energy Physics::Phenomenology, Polarization (waves), J/psi meson, Nuclear physics, Baryon, High Energy Physics::Experiment, Fermilab, Nuclear Experiment, Spectroscopy
Abstract: We report physics results of charm diffractive production, light meson spectroscopy, and baryon polarization, from studies carried out with data from experiment E690 of Fermilab.
Published: 2003
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48. Λ0Polarization in800−GeV/cpp→pf(Λ0K+)

Author: D. Wesson, M. C. Berisso, B. C. Knapp, Julián Félix, A. A. Wehmann, D. C. Christian, Marco Antonio Reyes Santos, M. H. L. S. Wang, M. N. Kreisler, A. Gara, G. Gutierrez, Modesto Antonio Sosa Aquino, Kyriacos Markianos, E. P. Hartouni, G. Moreno, S. Lee, and Erik Gottschalk
Subjects: Physics, General Physics and Astronomy, Atomic physics, Polarization (waves)
Published: 2002
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49. Diffractively Produced Charm Final States in800−GeV/cppCollisions

Author: S. Lee, D. Wesson, G. Gutierrez, B. C. Knapp, Juan C. Felix, Kyriacos Markianos, D. C. Christian, Erik Gottschalk, G. Moreno, M. C. Berisso, E. P. Hartouni, A. Gara, A. A. Wehmann, Modesto Sosa, M. H. L. S. Wang, M. N. Kreisler, and Marco A. Reyes
Subjects: Nuclear physics, Physics, Particle physics, Meson, Hadron, General Physics and Astronomy, Elementary particle, Charm (quantum number), Type (model theory), Open charm, Boson
Abstract: We report the first observation of diffractively produced open charm in 800-GeV/c pp collisions of the type pp{yields}pD{sup *}X. We measure cross sections of {sigma}{sub diff}(D{sup *+})= (0.185{+-}0.044{+-}0.054) {mu}b and {sigma}{sub diff}(D{sup *-})= (0.174{+-}0.034{+-}0.029) {mu}b. Our measurements are based on 4.3 x 10{sup 9} events recorded by FNAL E690 in the fixed-target run of 1991. We compare our results with previous fixed-target charm experiments.
Published: 2001
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50. Λ0 Polarization in pp→p{Λ0K+} at 800 GeV/c

Author: G. Moreno, M. C. Berisso, E. P. Hartouni, K. Markianos, G. Gutierrez, E. E. Gottschalk, M. N. Kreisler, S. Lee, D. Wesson, A. Gara, D. C. Christian, M. H. L. S. Wang, A. A. Wehmann, Modesto Sosa, B. C. Knapp, Juan C. Felix, and M. A. Reyes
Subjects: Physics, Nuclear physics, Particle physics, Polarization (waves), Lambda baryon
Abstract: We present some preliminary measurements of Λ0 polarization, in the final state pp→p{Λ0K+} created at 800 GeV/c, as a function of PT,xF, and the diffractive mass of the object {Λ0K+}.
Published: 2000
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