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95 results on '"D., Pose"'

1. Fault tolerance analysis of a hexarotor with reconfigurable tilted rotors.

Author: Claudio D. Pose, Juan I. Giribet, and Ignacio Mas
Published: 2020
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2. Fault tolerance analysis of a multirotor with 6DOF.

Author: Juan I. Giribet, Claudio D. Pose, and Ignacio Mas
Published: 2019
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3. Rotor Fault Detection and Identification in Multirotors Based on Supervised Learning

Author: José I. González-Etchemaite, Claudio D. Pose, and Juan I. Giribet
Subjects: Control and Optimization, Control and Systems Engineering, Automotive Engineering, Aerospace Engineering
Abstract: This work presents the development of a fault detection and identification module for multirotor unmanned aerial vehicles (UAVs), capable of detecting a total failure in any of its rotors. The solution is based on a supervised learning approach, for which random forest and support vector machine classifiers have been trained using simulated data, and proved to be feasible to implement in real time. To validate these models, experimental proof will be shown of a classifier running in real time onboard a particular fault tolerant hexarotor design, showing the fastest detection times in this vehicle to date.
Published: 2023

4. People counting using visible and infrared images

Author: Juan I. Giribet, Claudio D. Pose, Daniel R. Parisi, Joaquín Filipic, Martín Biagini, and Ignacio Mas
Subjects: 0209 industrial biotechnology, business.industry, Infrared, Computer science, Cognitive Neuroscience, ComputingMethodologies_IMAGEPROCESSINGANDCOMPUTERVISION, 02 engineering and technology, DUAL (cognitive architecture), Convolutional neural network, Drone, Computer Science Applications, Data set, 020901 industrial engineering & automation, Artificial Intelligence, 0202 electrical engineering, electronic engineering, information engineering, Extensive data, RGB color model, 020201 artificial intelligence & image processing, Computer vision, Artificial intelligence, business
Abstract: We propose the use of convolutional neural networks (CNN) for counting and positioning people given aerial shots of visible and infrared images. Our data set is entirely made of semi-artificial images created from real photographs taken from a drone using a dual FLIR camera. We compare the performance between the CNNs using 3 (RGB) and 4 (RGB + IR) channels, both under different lighting conditions. The 4-channel network responds better in all situations, particularly in cases of poor visible illumination that can be found in night scenarios. The proposed methodology could be applied to real situations when an extensive data bank of 4-channel images is available.
Published: 2021

5. Fault Tolerance Analysis for a Class of Reconfigurable Aerial Hexarotor Vehicles

Author: Juan I. Giribet, Ignacio Mas, and Claudio D. Pose
Subjects: 0209 industrial biotechnology, Class (computer programming), Computer science, Rotor (electric), Fault tolerance, Thrust, 02 engineering and technology, Servomotor, Computer Science Applications, law.invention, Attitude control, 020901 industrial engineering & automation, Control and Systems Engineering, Control theory, law, Torque, Electrical and Electronic Engineering, Actuator
Abstract: Several works have addressed the issue of fault tolerance in multirotors in case of a rotor total failure, particularly their ability to keep full independent control of attitude and altitude. It has been proven that to achieve this, a minimum of six rotors is needed. In this article, the performance of several standard and nonstandard hexarotor structures is analyzed, both for a nominal case (without failure) and in the case where one of the actuators is under failure (incapability to exert thrust). The performance is shown in terms of maximum rotational torque and vertical force that the vehicle can exert. The main contribution of this article is the proposal and analysis of converting these vehicles into reconfigurable ones through the addition of a minimum number of servomotors, to deal with failures and to greatly improve the maneuverability under these conditions, in order to identify the reconfigurable structure with the best performance. An experimental demonstration in an outdoor environment is shown for the proposed reconfigurable structure with best performance in case of a full rotor failure.
Published: 2020

6. Trajectory Following with a MAV Under Rotor Fault Conditions

Author: Juan I. Giribet, Ignacio Mas, Claudio D. Pose, and Francisco Presenza
Subjects: 020301 aerospace & aeronautics, 0209 industrial biotechnology, Control and Optimization, Rotor (electric), Computer science, Aerospace Engineering, 02 engineering and technology, Fault (power engineering), law.invention, 020901 industrial engineering & automation, 0203 mechanical engineering, Control and Systems Engineering, law, Control theory, Automotive Engineering, Trajectory, Multirotor
Abstract: Lately, a novel multirotor aerial vehicle capable of handling single rotor failures was presented. When a rotor fails, physically reconfiguring one of the remaining rotors of a hexarotor allows to compensate for maneuverability limitations. In this work, experimental results show the performance of the vehicle in a trajectory-following task in both nominal and fault conditions.
Published: 2020

7. Distributed Route Initialization Algorithms for the Monash Secure RISC Multiprocessor.

Author: V. J. Fazio and R. D. Pose
Published: 1997
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8. Multirotor fault tolerance based on center-of-mass shifting in case of rotor failure

Author: Claudio D. Pose and Juan I. Giribet
Subjects: Control theory, Rotor (electric), law, Computer science, Work (physics), Fixed position, Control reconfiguration, Fault tolerance, Center of mass, Degrees of freedom (mechanics), Multirotor, law.invention
Abstract: This work carries out an analysis on fault tolerance in multirotor vehicles, particularly for an hexarotor one, where such feature is achieved by shifting the center of mass in case of a motor failure. It will be shown that, for an hexarotor vehicle, for each of the possible motor failures, there exists an optimal fixed position for the center of mass, in order to keep independent control of four degrees of freedom, and to obtain the best maneuverability. The performance of this solution will be compared with a previous design based on motor reconfiguration in case of a motor failure.
Published: 2021

9. Charging in a Secure Environment.

Author: Chris S. Wallace and R. D. Pose
Published: 1990
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10. Diseño de un autopiloto para pequeños vehículos no tripulados

Author: Claudio D. Pose, Ignacio Mas, Juan I. Giribet, Leonardo Garberoglio, and UBA
Subjects: Autopilot, Navigation Guidance & Control, Unmanned vehicles, Autopiloto, Navegación Guiado & Control, Vehículos no tripulados, SIMPLE (military communications protocol), Firmware, Computer science, Control Automático y Robótica, Control engineering, purl.org/becyt/ford/2.2 [https], INGENIERÍAS Y TECNOLOGÍAS, VEHÍCULOS NO TRIPULADOS, computer.software_genre, law.invention, purl.org/becyt/ford/2 [https], Work (electrical), law, UNMANNED VEHICLES, AUTOPILOTO, AUTOPILOT, Robot operating system, computer, NAVIGATION GUIDANCE & CONTROL, Ingeniería Eléctrica, Ingeniería Electrónica e Ingeniería de la Información, NAVEGACIÓN GUIADO Y CONTROL
Abstract: In this work, the design of an autopilot for small unmanned vehicles is presented. It is focused mainly on the system’s architecture, while presenting some important remarks of the developed firmware. In particular, the firmware uses rosserial, a package that allows a simple connection with ROS (Robot Operating System), which is useful for a number of applications.The work is validated experimentally on an multirotor-type unmanned aerial vehicle (UAV), and on an autonomous surface vehicle (ASV). These vehicles have been developed by our group, and this work provides information about such projects, which may be useful for those interested in the development of this kind of vehicles., En este trabajo se presenta el diseño de un autopiloto para pequeños vehículos autónomos. El trabajo está enfocado principalmente en la arquitectura del sistema, pero se presentan también algunos detalles del firmware desarrollado para el autopiloto. En particular, el firmware incluye el paquete rosserial, que permite una conexión simple con ROS (Robot Operating System), resultando beneficioso para diversas aplicaciones.El desarrollo se valida experimentalmente en un vehículo aéreo no tripulado (UAV 1) del tipo multi-rotor y en un vehículo acuático de superficie (ASV 2). Estos vehículos han sido desarrollados por nuestro grupo, y en este trabajo puede encontrarse información sobre estos proyectos, lo cual puede ser de utilidad para los interesados en el desarrollo de UAV o ASV.
Published: 2019

11. Wide band-pass FSS with reduced periodicity for energy efficient windows at higher frequencies

Author: Erich Zimmermann, Matteo Lanini, Claudio D. Pose, Andrea Salvade, Luc Burnier, Jeremy Fleury, Carine Genoud, and Andreas Schüler
Subjects: 010302 applied physics, Materials science, business.industry, Attenuation, Acoustics, 02 engineering and technology, General Chemistry, 021001 nanoscience & nanotechnology, Laser, 01 natural sciences, law.invention, Glazing, law, Thermal insulation, 0103 physical sciences, Equivalent circuit, General Materials Science, 0210 nano-technology, business, Microwave, Energy (signal processing), Efficient energy use
Abstract: A simulation model and an experimental characterization of energy saving glazing transparent to mobile communication frequency up to 40 GHz is presented. A previous study showed that laser structured energy efficient windows with a frequency selective surface greatly reduces the microwave attenuation for frequencies below 5 GHz, while preserving the thermal insulation properties of the window. In this study, the focus is laid upon higher frequency range (26–40 GHz), considering the rapid evolution of the carrier frequencies. Several energy efficient windows were built and laser scribed with a cell periodicity down to 0.5 mm. A computational model based on electric equivalent circuit behavior and transfer matrix representation is shown, and compared to a real set of measurements taken from the manufactured glazing. The simulated data strongly fit the measurements taken for five different windows, and, additionally, it allows to infer parameters of a real double-glazing that may be difficult to measure directly. To the best of our knowledge, this is the first time energy efficient windows are produced with these characteristics, measured and simulated at high frequency range.
Published: 2020

12. Fault tolerance analysis of a hexarotor with reconfigurable tilted rotors

Author: Ignacio Mas, Juan I. Giribet, and Claudio D. Pose
Subjects: 020301 aerospace & aeronautics, 0209 industrial biotechnology, Computer science, Rotor (electric), Work (physics), Control reconfiguration, Fault tolerance, 02 engineering and technology, Servomotor, law.invention, Attitude control, 020901 industrial engineering & automation, 0203 mechanical engineering, law, Control theory, Torque, Multirotor, Maximum torque
Abstract: Tilted rotors in multirotor vehicles have shown to be useful for different practical reasons. For instance, increasing yaw maneuverability or enabling full position and attitude control of hexarotor vehicles. It has also been proven that a hexagon-shaped multirotor is capable of complete attitude and altitude control under failures of one of its rotors. However, when a rotor fails, the torque that can be reached in the worst- case direction decreases considerably.This work proposes to actively change the tilt angle of the rotors when a failure occurs. This rotor reconfiguration increases the maximum torque that can be achieved in the most stressful direction, reducing maneuverability limitations. Experimental validations are shown, where the proposed reconfigurable tilted rotor is used in order to control a hexarotor vehicle when a failure appears mid-flight. The impact of the delay in the reconfiguration when a failure occurs is also addressed.
Published: 2020

13. Experimental Validation of a Fault Tolerant Hexacopter with Tilted Rotors

Author: Claudio D. Pose, Grupo de Procesamiento de Señales, Identificación y Control , Argentina, Juan I. Giribet, Alejandro S. Ghersin, and Ignacio Mas
Subjects: Computer Networks and Communications, Control theory, Computer science, Fault tolerance, Experimental validation, Electrical and Electronic Engineering, Instrumentation
Published: 2018

14. Fault tolerance analysis of a multirotor with 6DOF

Author: Ignacio Mas, Juan I. Giribet, and Claudio D. Pose
Subjects: Vehicle dynamics, 0209 industrial biotechnology, 020901 industrial engineering & automation, Control theory, Computer science, 020208 electrical & electronic engineering, Work (physics), 0202 electrical engineering, electronic engineering, information engineering, Torque, Fault tolerance, 02 engineering and technology, Multirotor
Abstract: Several works have addressed the issue of obtaining a six degree of freedom (6DOF) capable multirotor. However, the capability of keeping full control in the case of a total failure in one of the rotors has not yet been analyzed. In this work, it is proven that eight is the minimum number of rotors necessary to achive 6DOF control of a multirotor, in the case of a total failure in one of them. Also, an octorotor configuration with 6DOF control capabilities in a failure situation is proposed and analyzed through numerical simulations, comparing its flight performance in a nominal and a failure case.
Published: 2019

15. Choriboard III: A Small and Powerful Flight Controller for Autonomous Vehicles

Author: Juan I. Giribet, Marcos Meraviglia, Claudio D. Pose, Leonardo Garberoglio, and Ignacio Mas
Subjects: Microcontroller, Flight controller, law, Computer science, Range (aeronautics), ComputerApplications_COMPUTERSINOTHERSYSTEMS, Gyroscope, Control engineering, Pulse-width modulation, law.invention, Power (physics)
Abstract: In this work we present a new flight controller board based on a Cortex-M7 microcontroller. The design is based on previous work done in our laboratory, this being the third version of the board. The main goal of this update is to achieve a very small and lightweight flight controller, but with a high computational power that can be used in a wide range of autonomous vehicles. In order to show its performance, an example for stabilizing a quadrotor UAV is presented and analyzed.
Published: 2018

16. Actuator Fault Detection in a Hexacopter Using Machine Learning

Author: Juan I. Giribet, Alessandro Giusti, and Claudio D. Pose
Subjects: Actuator fault detection, Computer science, business.industry, PID controller, Machine learning, computer.software_genre, Random forest, Attitude control, False positive paradox, Torque, Artificial intelligence, business, Classifier (UML), computer, Pulse-width modulation
Abstract: We present an approach based on machine learning for detecting total motor failure in a tilted-rotor hexacopter. We generate large flight datasets using a Simulink model based on a 6-DoF block and position and attitude PID controllers; these datasets are used to train and validate a random forest classifier that is able to detect if a motor has failed, and identify which one. The algorithm uses as inputs the attitude of the vehicle and the signals commanded to the motors, and outputs a flag per motor that indicates its healthy or faulty state. The classifier achieves a good performance, resulting in a detection of the fault in less than 100mS after it has occurred, with a high rejection of false positives, less than one false positive per hour of flight.
Published: 2018

17. Wild and Primitive Common Bean Populations in the Germplasm Collection at the MBG-CSIC

Author: A. M. De Ron, Mariana J. Ferreyra, M. C. Menéndez-Sevillano, and J. D. Pose
Subjects: Germplasm, biology, Research council, Botany, Phenotypic trait, Phaseolus, biology.organism_classification, Domestication
Abstract: In the Mision Biologica de Galicia, Spanish National Research Council (MBG-CSIC) there is a germplasm collection of common bean (Phaseolus vulgaris L.) that includes wild and cultivated accessions. In the case of the cultivated populations from the Andean Region, some of them are considered “primitive” since they are unimproved landraces. The aim of this study was to describe some characteristics of the wild and primitive populations and their area of origin.
Published: 2018

18. Fault tolerant control of an hexacopter with a tilted-rotor configuration

Author: Claudio D. Pose, Juan I. Giribet, and Ignacio Mas
Subjects: 020301 aerospace & aeronautics, 0209 industrial biotechnology, Computer science, Rotor (electric), Fault tolerance, 02 engineering and technology, law.invention, Nonlinear Sciences::Chaotic Dynamics, Quantitative Biology::Subcellular Processes, 020901 industrial engineering & automation, 0203 mechanical engineering, Control theory, law, Physics::Chemical Physics, Altitude control, Spinning
Abstract: Recently, it was shown that an hexagon-shaped hexa-rotor micro aerial vehicle with unidirectionally spinning tilted rotors is capable of fault tolerant attitude and altitude control. This result has been theoretically proven and validated by simulations. However, experimental results have never been reported yet. In this work experimental results are presented, and a comparison between a tilted-rotor hexacopter with one in a standard rotor configuration is carried out.
Published: 2017

19. Hexacopter fault tolerant actuator allocation analysis for optimal thrust

Author: Alejandro S. Ghersin, Juan I. Giribet, and Claudio D. Pose
Subjects: 020301 aerospace & aeronautics, 0209 industrial biotechnology, Engineering, Rotor (electric), business.industry, Work (physics), Fault tolerance, Thrust, Control engineering, 02 engineering and technology, law.invention, 020901 industrial engineering & automation, 0203 mechanical engineering, law, Control theory, Autopilot, Torque, Actuator, business, Moore–Penrose pseudoinverse
Abstract: Recently, it was shown that an hexagon shaped hexarotor vehicle with tilted rotors, is capable of fault tolerant attitude and altitude control. In this work, we propose a strategy to select the signals commanded to each rotor in order to achieve a desired torque and vertical force. The proposed strategy is optimal in the sense that minimizes the maximum force exerted by the rotors. A comparison with the commonly used strategy based upon the Moore-Penrose pseudoinverse is carried out. It is shown that, with the optimal strategy proposed here, maneuverability is improved, because the new method takes into account the actuators constraints. Although the optimal strategy is computationally more demanding than the classical method, the additional computational burden is not significant when both strategies are compared in a real application. To show this, both algorithms were programmed in an autopilot based on an ARM Cortex M3 microcontroller, and the experimental results are presented.
Published: 2017

20. Measurement of D0, D+, Ds + and D*+ production in fixed target 920 GeV proton–nucleus collisions

Author: Laura Silva, D. Goloubkov, I. Matchikhilian, Maurizio Piccinini, V. Egorytchev, S. Solunin, I. Abt, R. Pernack, M. Mevius, F. Sanchez, Peter Robmann, P. Kreuzer, B. Schwenninger, H. B. Dreis, Vladimir Popov, C. B. Krauss, I. Belotelov, H. S. Subramania, D. Skrk, M. Schmelling, U. Schwanke, B. Lomonosov, Dmitry Emeliyanov, Marcus Hohlmann, S. De Castro, K. M. Danielsen, Reinhard Männer, Yu.T. Kiryushin, U. Husemann, M. Medinnis, Y. Pylypchenko, Mikhail Zavertyaev, R. Zimmermann, J. Flammer, I. Rostovtseva, Y. Vassiliev, O. Barsukova, A. H. Walenta, H. Schröder, M. Adams, J. J. Wang, S. Shuvalov, Z. Zheng, M. Ispiryan, T. Živko, S. Gradl, Thomas Lohse, Mauro Villa, S. Essenov, E. B. Klinkby, S. Keller, S. Somov, S. Karabekyan, M. Bräuer, M. Walter, Aleksandar Aleksandrov, A. Gellrich, F. Eisele, M. Ouchrif, O. Gouchtchine, R. Muresan, M. Nörenberg, N.N. Karpenko, Vladislav Balagura, G. Bohm, J.D. Hansen, Laura Fabbri, J. Groth-Jensen, Hermann Kolanoski, J. Bastos, Imma Riu, António Amorim, C. Padilla, H. Deppe, P. Križan, V. Rybnikov, S. Kupper, I. Tikhomirov, A. Golutvin, B. Bobchenko, K. T. Knöpfle, C. van Eldik, Andrej Gorišek, Nicola Semprini-Cesari, A. Belkov, L. Garrido, M. Negodaev, C. Stegmann, A. Bogatyrev, M. Feuerstack-Raible, Mogens Dam, A. Schreiner, A. Vitale, T. Buran, J. Gläß, D. Krücker, I. Kisel, J. Spengler, S. Xella-Hansen, B. A. Petersen, Pietro Faccioli, Yu. A. Golubkov, V. Aushev, B. Fominykh, I. Tsakov, Yu.V. Mikhailov, A. Lanyov, R. Spighi, F. Sciacca, F. Grimaldi, S. Korpar, C. Bauer, D. C. Goulart, D. Reßing, M. Symalla, A. J. Schwartz, Jose M Hernandez, R. Pestotnik, Werner Hofmann, A. Michetti, H. Albrecht, M. Böcker, Marco Bruschi, I. Gorbounov, A. Bertin, B. Lewendel, Peter Buchholz, B. Schmidt, R. Mankel, B. Giacobbe, Y. Bagaturia, R. Wurth, D. Pose, Y. Guilitsky, S. Prystupa, Wouter Hulsbergen, K. Ehret, M. Funcke, J. Kessler, Antonio Sbrizzi, S. J. Aplin, Helmut Wolters, B. Schwingenheuer, Farid Ould-Saada, T. Jagla, X. Dong, F. Khasanov, S. Masciocchi, T. Kvaratskheliia, J. Batista, M. Danilov, J. Pyrlik, R. Mizuk, O. Igonkina, M. zur Nedden, M. Poli, Kwong Lau, M. Starič, A. S. Schwarz, Alexander Spiridonov, U. Uwer, Valery Pugatch, D. Peralta, A. Zhelezov, M. Bruinsma, A. Somov, Kendall Reeves, Aleš Stanovnik, G. Medin, I. Vukotic, João Carvalho, H. Rick, H. Kapitza, T. Zeuner, Antonio Zoccoli, I. Massa, Vasco Amaral, A. Wurz, T. Hott, P. Conde, Igor Golutvin, Yu. Zaitsev, C. Cruse, M. A. Pleier, Th. Bauer, Sebastian Nowak, D. Wegener, H. Wahlberg, W. Gradl, C. Jiang, M. Bargiotti, M. T. Nunez Pardo de Vera, M. Agari, Ulrich Werthenbach, L. Sozuer, Maksym Titov, I. ABT, M. ADAMS, M. AGARI, H. ALBRECHT, A. ALEKSANDROV, V. AMARAL, A. AMORIM, S.J. APLIN, V. AUSHEV, Y. BAGATURIA, V. BALAGURA, M. BARGIOTTI, O. BARSUKOVA, J. BASTOS, J. BATISTA, C. BAUER, TH.S. BAUER, A. BELKOV, AR. BELKOV, I. BELOTELOV, A. BERTIN, B. BOBCHENKO, M. BOCKER, A. BOGATYREV, G. BOHM, M. BRAUER, M. BRUINSMA, M. BRUSCHI, P. BUCHHOLZ, T. BURAN, J. CARVALHO, P. CONDE, C. CRUSE, M. DAM, K.M. DANIELSEN, M. DANILOV, S. DE CASTRO, H. DEPPE, X. DONG, H.B. DREIS, V. EGORYTCHEV, K. EHRET, F. EISELE, D. EMELIYANOV, S. ESSENOV, L. FABBRI, P. FACCIOLI, M. FEUERSTACK-RAIBLE, J. FLAMMER, B. FOMINYKH, M. FUNCKE, LL. GARRIDO, A. GELLRICH, B. GIACOBBE, J. GLA), D. GOLOUBKOV, Y. GOLUBKOV, A. GOLUTVIN, I. GOLUTVIN, I. GORBOUNOV, A. GORISEK, O. GOUCHTCHINE, D.C. GOULART, S. GRADL, W. GRADL, F. GRIMALDI, J. GROTH-JENSEN, YU. GUILITSKY, J.D. HANSEN, J.M. HERNANDEZ, W. HOFMANN, M. HOHLMANN, T. HOTT, W. HULSBERGEN, U. HUSEMANN, O. IGONKINA, M. ISPIRYAN, T. JAGLA, C. JIANG, H. KAPITZA, S. KARABEKYAN, N. KARPENKO, S. KELLER, J. KESSLER, F. KHASANOV, YU. KIRYUSHIN, I. KISEL, E. KLINKBY, K.T. KNOPFLE, H. KOLANOSKI, S. KORPAR, C. KRAUSS, P. KREUZER, P. KRIZAN, D. KRUCKER, S. KUPPER, T. KVARATSKHELIIA, A. LANYOV, K. LAU, B. LEWENDEL, T. LOHSE, B. LOMONOSOV, R. MANNER, R. MANKEL, S. MASCIOCCHI, I. MASSA, I. MATCHIKHILIAN, G. MEDIN, M. MEDINNIS, M. MEVIUS, A. MICHETTI, YU. MIKHAILOV, R. MIZUK, R. MURESAN, M. ZUR NEDDEN, M. NEGODAEV, M. NORENBERG, S. NOWAK, M.T. NUNEZ PARDO DE VERA, M. OUCHRIF, F. OULD-SAADA, C. PADILLA, D. PERALTA, R. PERNACK, R. PESTOTNIK, B.A. PETERSEN, M. PICCININI, M.A. PLEIER, M. POLI, V. POPOV, D. POSE, S. PRYSTUPA, V. PUGATCH, Y. PYLYPCHENKO, J. PYRLIK, K. REEVES, D. RESSING, H. RICK, I. RIU, P. ROBMANN, I. ROSTOVTSEVA, V. RYBNIKOV, F. SANCHEZ, A. SBRIZZI, M. SCHMELLING, B. SCHMIDT, A. SCHREINER, H. SCHRODER, U. SCHWANKE, A.J. SCHWARTZ, A.S. SCHWARZ, B. SCHWENNINGER, B. SCHWINGENHEUER, F. SCIACCA, N. SEMPRINI-CESARI, S. SHUVALOV, L. SILVA, D. SKRK, L. SOZUER, S. SOLUNIN, A. SOMOV, S. SOMOV, J. SPENGLER, R. SPIGHI, A. SPIRIDONOV, A. STANOVNIK, M. STARIC, C. STEGMANN, H.S. SUBRAMANIA, M. SYMALLA, I. TIKHOMIROV, M. TITOV, I. TSAKOV, U. UWER, C. VAN ELDIK, YU. VASSILIEV, M. VILLA, A. VITALE, I. VUKOTIC, H. WAHLBERG, A.H. WALENTA, M. WALTER, J.J. WANG, D. WEGENER, U. WERTHENBACH, H. WOLTERS, R. WURTH, A. WURZ, S. XELLA-HANSEN, YU. ZAITSEV, M. ZAVERTYAEV, T. ZEUNER, A. ZHELEZOV, Z. ZHENG, R. ZIMMERMANN, T. ZIVKO, and A. ZOCCOLI
Subjects: Mass number, Physics, Particle physics, Physics and Astronomy (miscellaneous), Proton, Meson, 010308 nuclear & particles physics, High Energy Physics::Phenomenology, HERA, 01 natural sciences, High Energy Physics - Experiment, Nuclear physics, symbols.namesake, 0103 physical sciences, symbols, Feynman diagram, ddc:530, High Energy Physics::Experiment, Rapidity, Nuclear Experiment, 010306 general physics, Engineering (miscellaneous), Storage ring, HERA-B
Abstract: The inclusive production cross sections of the charmed mesons D^0, D^+, D_s^+ and D^{*+} have been measured in interactions of 920 GeV protons on C, Ti, and W targets with the HERA-B detector at the HERA storage ring. Differential cross sections as a function of transverse momentum and Feynman's x variable are given for the central rapidity region and for transverse momenta up to $\pT=3.5$ GeV/$c$. The atomic mass number dependence and the leading to non-leading particle production asymmetries are presented as well., Comment: Submitted to EPJ C
Published: 2007

21. K*0 and φ meson production in proton–nucleus interactions at $\sqrt{s}=41.6\text{GeV}$

Author: I. Abt, M. Adams, M. Agari, H. Albrecht, A. Aleksandrov, V. Amaral, A. Amorim, S.J. Aplin, V. Aushev, Y. Bagaturia, V. Balagura, M. Bargiotti, O. Barsukova, J. Bastos, J. Batista, C. Bauer, T.S. Bauer, A. Belkov, I. Belotelov, A. Bertin, B. Bobchenko, M. Böcker, A. Bogatyrev, G. Bohm, M. Bräuer, M. Bruinsma, M. Bruschi, P. Buchholz, T. Buran, J. Carvalho, P. Conde, C. Cruse, M. Dam, K.M. Danielsen, M. Danilov, S. De Castro, H. Deppe, X. Dong, H.B. Dreis, V. Egorytchev, K. Ehret, F. Eisele, D. Emeliyanov, S. Essenov, L. Fabbri, P. Faccioli, M. Feuerstack-Raible, J. Flammer, B. Fominykh, M. Funcke, L. Garrido, A. Gellrich, B. Giacobbe, J. Gläß, D. Goloubkov, Y. Golubkov, A. Golutvin, I. Golutvin, I. Gorbounov, A. Gorišek, O. Gouchtchine, D.C. Goulart, S. Gradl, W. Gradl, F. Grimaldi, J. Groth-Jensen, Y. Guilitsky, J.D. Hansen, J.M. Hernández, W. Hofmann, M. Hohlmann, T. Hott, W. Hulsbergen, U. Husemann, O. Igonkina, M. Ispiryan, T. Jagla, C. Jiang, H. Kapitza, S. Karabekyan, N. Karpenko, S. Keller, J. Kessler, F. Khasanov, Y. Kiryushin, I. Kisel, E. Klinkby, K.T. Knöpfle, H. Kolanoski, S. Korpar, C. Krauss, P. Kreuzer, P. Križan, D. Krücker, S. Kupper, T. Kvaratskheliia, A. Lanyov, K. Lau, B. Lewendel, T. Lohse, B. Lomonosov, R. Männer, R. Mankel, S. Masciocchi, I. Massa, I. Matchikhilian, G. Medin, M. Medinnis, M. Mevius, A. Michetti, Y. Mikhailov, R. Mizuk, R. Muresan, M. zur Nedden, M. Negodaev, M. Nörenberg, S. Nowak, M.T. Núñez Pardo de Vera, M. Ouchrif, F. Ould-Saada, C. Padilla, D. Peralta, R. Pernack, R. Pestotnik, B.A. Petersen, M. Piccinini, M.A. Pleier, M. Poli, V. Popov, D. Pose, S. Prystupa, V. Pugatch, Y. Pylypchenko, J. Pyrlik, K. Reeves, D. Reßing, H. Rick, I. Riu, P. Robmann, I. Rostovtseva, V. Rybnikov, F. Sánchez, A. Sbrizzi, M. Schmelling, B. Schmidt, A. Schreiner, H. Schröder, U. Schwanke, A.J. Schwartz, A.S. Schwarz, B. Schwenninger, B. Schwingenheuer, F. Sciacca, N. Semprini-Cesari, S. Shuvalov, L. Silva, L. Sözüer, S. Solunin, A. Somov, S. Somov, J. Spengler, R. Spighi, A. Spiridonov, A. Stanovnik, M. Starič, C. Stegmann, H.S. Subramania, M. Symalla, I. Tikhomirov, M. Titov, I. Tsakov, U. Uwer, C. van Eldik, Y. Vassiliev, M. Villa, A. Vitale, I. Vukotic, H. Wahlberg, A.H. Walenta, M. Walter, J.J. Wang, D. Wegener, U. Werthenbach, H. Wolters, R. Wurth, A. Wurz, Y. Zaitsev, M. Zavertyaev, T. Zeuner, A. Zhelezov, Z. Zheng, R. Zimmermann, T. Živko, A. Zoccoli, I. ABT, M. ADAMS, M. AGARI, H. ALBRECHT, A. ALEKSANDROV, V. AMARAL, A. AMORIM, S.J. APLIN, V. AUSHEV, Y. BAGATURIA, V. BALAGURA, M. BARGIOTTI, O. BARSUKOVA, J. BASTOS, J. BATISTA, C. BAUER, T.S. BAUER, A. BELKOV, I. BELOTELOV, A. BERTIN, B. BOBCHENKO, M. BÖCKER, A. BOGATYREV, G. BOHM, M. BRÄUER, M. BRUINSMA, M. BRUSCHI, P. BUCHHOLZ, T. BURAN, J. CARVALHO, P. CONDE, C. CRUSE, M. DAM, K.M. DANIELSEN, M. DANILOV, S. DE CASTRO, H. DEPPE, X. DONG, H.B. DREIS, V. EGORYTCHEV, K. EHRET, F. EISELE, D. EMELIYANOV, S. ESSENOV, L. FABBRI, P. FACCIOLI, M. FEUERSTACK-RAIBLE, J. FLAMMER, B. FOMINYKH, M. FUNCKE, L. GARRIDO, A. GELLRICH, B. GIACOBBE, J. GLÄß, D. GOLOUBKOV, Y. GOLUBKOV, A. GOLUTVIN, I. GOLUTVIN, I. GORBOUNOV, A. GORISEK, O. GOUCHTCHINE, D.C. GOULART, S. GRADL, W. GRADL, F. GRIMALDI, J. GROTH-JENSEN, Y. GUILITSKY, J.D. HANSEN, J.M. HERNÁNDEZ, W. HOFMANN, M. HOHLMANN, T. HOTT, W. HULSBERGEN, U. HUSEMANN, O. IGONKINA, M. ISPIRYAN, T. JAGLA, C. JIANG, H. KAPITZA, S. KARABEKYAN, N. KARPENKO, S. KELLER, J. KESSLER, F. KHASANOV, Y. KIRYUSHIN, I. KISEL, E. KLINKBY, K.T. KNÖPFLE, H. KOLANOSKI, S. KORPAR, C. KRAUSS, P. KREUZER, P. KRIZAN, D. KRÜCKER, S. KUPPER, T. KVARATSKHELIIA, A. LANYOV, K. LAU, B. LEWENDEL, T. LOHSE, B. LOMONOSOV, R. MÄNNER, R. MANKEL, S. MASCIOCCHI, I. MASSA, I. MATCHIKHILIAN, G. MEDIN, M. MEDINNIS, M. MEVIUS, A. MICHETTI, Y. MIKHAILOV, R. MIZUK, R. MURESAN, M. ZUR NEDDEN, M. NEGODAEV, M. NÖRENBERG, S. NOWAK, M.T. NÚÑEZ PARDO DE VERA, M. OUCHRIF, F. OULD-SAADA, C. PADILLA, D. PERALTA, R. PERNACK, R. PESTOTNIK, B.A. PETERSEN, M. PICCININI, M.A. PLEIER, M. POLI, V. POPOV, D. POSE, S. PRYSTUPA, V. PUGATCH, Y. PYLYPCHENKO, J. PYRLIK, K. REEVES, D. REßING, H. RICK, I. RIU, P. ROBMANN, I. ROSTOVTSEVA, V. RYBNIKOV, F. SÁNCHEZ, A. SBRIZZI, M. SCHMELLING, B. SCHMIDT, A. SCHREINER, H. SCHRÖDER, U. SCHWANKE, A.J. SCHWARTZ, A.S. SCHWARZ, B. SCHWENNINGER, B. SCHWINGENHEUER, F. SCIACCA, N. SEMPRINI-CESARI, S. SHUVALOV, L. SILVA, L. SÖZÜER, S. SOLUNIN, A. SOMOV, S. SOMOV, J. SPENGLER, R. SPIGHI, A. SPIRIDONOV, A. STANOVNIK, M. STARIC, C. STEGMANN, H.S. SUBRAMANIA, M. SYMALLA, I. TIKHOMIROV, M. TITOV, I. TSAKOV, U. UWER, C. VAN ELDIK, Y. VASSILIEV, M. VILLA, A. VITALE, I. VUKOTIC, H. WAHLBERG, A.H. WALENTA, M. WALTER, J.J. WANG, D. WEGENER, U. WERTHENBACH, H. WOLTERS, R. WURTH, A. WURZ, Y. ZAITSEV, M. ZAVERTYAEV, T. ZEUNER, A. ZHELEZOV, Z. ZHENG, R. ZIMMERMANN, T. ZIVKO, A. ZOCCOLI, PRT, GBR, CZE, SWE, DEU, NOR, USA, SVN, CHE, DZA, BGR, DNK, RUS, NLD, DIP. DI FISICA, DIPARTIMENTO DI FISICA E ASTRONOMIA 'AUGUSTO RIGHI', Facolta' di INGEGNERIA, SECONDA FACOLTA' DI INGEGNERIA DELL'UNIVERSITA' DI BOLOGNA CON SEDE CESENA, Da definire, and AREA MIN. 02 - Scienze fisiche
Subjects: PA CROSS SECTION, Physics, Strange quark, Particle physics, HADROPRODUCTION, Physics and Astronomy (miscellaneous), Proton, Meson, 010308 nuclear & particles physics, Nuclear Theory, Sigma, HERA, Phi meson, 01 natural sciences, High Energy Physics - Experiment, 0103 physical sciences, ddc:530, High Energy Physics::Experiment, Rapidity, Atomic number, Nuclear Experiment, 010306 general physics, Engineering (miscellaneous)
Abstract: The inclusive production cross sections of the strange vector mesons K*0, K*0bar, and phi have been measured in interactions of 920 GeV protons with C, Ti, and W targets with the HERA-B detector at the HERA storage ring. Differential cross sections as a function of rapidity and transverse momentum have been measured in the central rapidity region and for transverse momenta up to pT=3.5 GeV/c. The atomic number dependence is parametrised as sigma(pA) = sigma(pN)*A**alpha, where sigma(pN) is the proton-nucleon cross section. Within the phase space accessible, alpha(K*0) = 0.86+/-0.03, alpha(K*0bar) = 0.87+/-0.03, and alpha(phi) = 0.96+/-0.02. The total proton-nucleon cross sections, determined by extrapolating the differential measurements to full phase space, are sigma(pN->K*0) = 5.06+/-0.54 mb, sigma(pN->K*0bar) = 4.02+/-0.45 mb, and sigma(pN->phi) = 1.17+/-0.11 mb. The Cronin effect is observed for the first time for vector mesons containing strange quarks; compared to the measurements of Cronin et al. for K+- mesons, the measured values of alpha for phi mesons coincide with those of K- mesons for all transverse momenta, while the enhancement for K*0 / K*0bar mesons is smaller., Comment: 19 pages, 17 figures, submitted to Eur Phys J C
Published: 2007

22. V0 production in p+A collisions at $\sqrt{s}=41.6$ GeV

Author: A. Michetti, Y. Guilitsky, S. Kupper, T. Hott, B. Lewendel, P. Conde, S. Xella-Hansen, Igor Golutvin, K. Ehret, J. Kessler, Antonio Sbrizzi, Yu. Zaitsev, Peter Buchholz, Y. Bagaturia, T. Jagla, X. Dong, Ll. Garrido, T. Kvaratskheliia, H. Deppe, E. B. Klinkby, Laura Silva, P. Kreuzer, F. Sanchez, S. Solunin, Wouter Hulsbergen, C. Bauer, I. Gorbounov, Andrej Gorišek, A. H. Walenta, D. Reßing, C. Cruse, A. J. Schwartz, Jose M Hernandez, M. A. Pleier, I. Massa, M. Danilov, Helmut Wolters, Farid Ould-Saada, Maurizio Piccinini, A. Belkov, U. Schwanke, B. Giacobbe, R. Spighi, J. Bastos, R. Pernack, D. Krücker, S. Prystupa, Yu. A. Golubkov, O. Igonkina, M. Funcke, M. Poli, R. Pestotnik, I. Abt, H. Rick, O. Barsukova, A. Bertin, T. Živko, Mikhail Zavertyaev, Valery Pugatch, A. Zhelezov, Laura Fabbri, Alexander Spiridonov, S. Essenov, M. Adams, S. De Castro, J. Groth-Jensen, M. zur Nedden, I. Rostovtseva, M. T. Nunez Pardo de Vera, M. Agari, A. Stanovnik, N.N. Karpenko, S. Keller, C. Padilla, Kwong Lau, Antonio Zoccoli, H. Schröder, Ulrich Werthenbach, A. S. Schwarz, Y. Vassiliev, H. B. Dreis, T. Zeuner, Vladimir Popov, U. Uwer, S. Masciocchi, F. Eisele, João Carvalho, H. Albrecht, K. M. Danielsen, J. Gläß, B. Lomonosov, M. Medinnis, M. Negodaev, A. Wurz, S. Karabekyan, J. Spengler, Y. Pylypchenko, Nicola Semprini-Cesari, Dmitry Emeliyanov, R. Mankel, Mauro Villa, Vasco Amaral, Reinhard Männer, R. Wurth, D. Pose, M. Nörenberg, M. Feuerstack-Raible, Mogens Dam, A. Bogatyrev, R. Mizuk, B. Schmidt, Imma Riu, Samo Korpar, C. Stegmann, Marcus Hohlmann, P. Križan, A. Golutvin, B. Bobchenko, Z. Zheng, Th. S. Bauer, A. Vitale, C. B. Krauss, C. van Eldik, U. Husemann, L. Sozuer, S. J. Aplin, B. Schwingenheuer, I. Kisel, A. Lanyov, I. Matchikhilian, R. Zimmermann, T. Buran, M. Böcker, B. A. Petersen, J. Pyrlik, Pietro Faccioli, V. Aushev, M. Ispiryan, F. Sciacca, S. Gradl, I. Belotelov, H. Kapitza, V. Rybnikov, I. Tsakov, M. Bruinsma, Kendall Reeves, Marco Bruschi, Maksym Titov, F. Grimaldi, M. Symalla, Vladislav Balagura, J. J. Wang, A. Schreiner, H. S. Subramania, J.D. Hansen, M. Bräuer, M. Walter, F. Khasanov, M. Starič, J. Batista, António Amorim, A. Somov, D. Peralta, I. Vukotic, Peter Robmann, K. T. Knöpfle, G. Medin, S. Somov, Aleksandar Aleksandrov, M. Ouchrif, R. Muresan, C. Jiang, I. Tikhomirov, B. Schwenninger, Yu.T. Kiryushin, M. Bargiotti, Sebastian Nowak, D. Wegener, S. Shuvalov, H. Wahlberg, W. Gradl, M. Schmelling, J. Flammer, B. Fominykh, Yu.V. Mikhailov, D. C. Goulart, Werner Hofmann, A. Gellrich, O. Gouchtchine, G. Bohm, Hermann Kolanoski, Thomas Lohse, D. Goloubkov, V. Egorytchev, and M. Mevius
Subjects: Astrofísica, Teoria quàntica de camps, Physics and Astronomy (miscellaneous), Astronomy, Nuclear physics, Astrophysics, 01 natural sciences, Partícules (Física nuclear), High Energy Physics - Experiment, symbols.namesake, Cross section (physics), String models, 0103 physical sciences, Feynman diagram, ddc:530, Nuclear Experiment, 010306 general physics, Engineering (miscellaneous), Particles (Nuclear physics), Physics, Models de corda, 010308 nuclear & particles physics, Hyperon, Function (mathematics), Quantum field theory, Transverse plane, Astronomia, symbols, High Energy Physics::Experiment, Física nuclear, Production (computer science), Atomic number, Atomic physics, Bar (unit)
Abstract: Inclusive doubly differential cross sections d^2\sigma_{pA}/dx_Fdp_T^2 as a function of Feynman-x (x_F) and transverse momentum (p_T) for the production of K^0_s, Lambda^0 and anti-Lambda^0 in proton-nucleus interactions at 920 GeV are presented. The measurements were performed by HERA-B in the negative x_F range (-0.12, Comment: 17 pages, 9 figures, 8 tables; minor revisions based on comments from the journal referee
Published: 2009

23. Polarised quark distributions in the nucleon from semi-inclusive spin asymmetries

Author: F. Tessarotto, F. Perrot-Kunne, W. Kröger, E. Burtin, K. Zaremba, Jay Roberts, J. Cranshaw, T. Matsuda, M. Plo, I. Sabo, M. Grosse Perdekamp, A. Karev, K. Haft, V. G. Krivokhijine, S. K. Dhawan, J. Lichtenstadt, S. Platchkov, N. de Botton, Victor Kukhtin, H. Gilly, M. Lamanna, J. H. Moromisato, Clemens A. Heusch, J. S. McCarthy, G. Igo, A. Steinmetz, Patrick Hautle, S. Bültmann, R. Birsa, F. Feinstein, D. von Harrach, J. E.J. Oberski, Takahiro Iwata, A. Ogawa, A. Schiller, D. Thers, Yu. Kisselev, G. Reicherz, D. Crabb, J. A. Garzon, C. Dulya, Naoaki Horikawa, Franco Bradamante, T. Akdogan, B. Roscherr, S. Dalla Torre, H. J. Kessler, G. Bardin, L. Betev, Roland Windmolders, J. Martino, Abhay Deshpande, C. S. Özben, M. Velasco, A. Arvidson, Rudiger Voss, J. Nassalski, M. Giorgi, U. Stiegler, T. Hasegawa, I.A. Savin, D. J. Miller, P. Schiavon, Andrea Bressan, Michal Szleper, A. Gallas, G. K. Mallot, J. Vogt, E. Arik, B. W. Mayes, T. O. Niinikoski, S. Ishimoto, Lawrence Pinsky, A. Witzmann, Y. Miyachi, St. Goertz, F. Lehar, G. Unel, B. Frois, H. Postma, R. van Dantzig, Matias Rodriguez, E. P. Sichtermann, F. Simeoni, G.I. Smirnov, J. Saborido, R. Puntaferro, D. Fasching, G. van Middelkoop, Jinkui Zhao, D. Pose, W. Meyer, Kunikazu Mori, C. A. Whitten, J. Kyynäräinen, A. de Lesquen, J. Pretz, K. Medved, Regine Willumeit, H. Pereira, W. Tlaczala, A. Tripet, G. Gracia, A. Sandacz, N. De Groot, K. Kurek, Anna Zanetti, F. Marie, T. Kageya, A. Rijllart, Bernardo Adeva, E. Rondio, T. Çuhadar, J. M. Le Goff, Heinrich B. Stuhrmann, A. Magnon, J. Ylöstalo, L. Naumann, M. Litmaath, Günter Baum, P. Berglund, B. Derro, E. von Goeler, D. Krämer, W. Wislicki, G. Rädel, S. Eichblatt, Alan D. Martin, B. Badelek, C. Fernandez, N. Hayashi, D. Peshekhonov, A. Bravar, V. W. Hughes, Ulrich Landgraf, A. Staude, T. J. Ketel, S. Forthmann, J. Kiryluk, E. M. Kabuß, (Astro)-Particles Physics, B., Adeva, T., Akdogan, E., Arik, A., Arvidson, B., Badelek, G., Bardin, G., Baum, P., Berglund, L., Betev, R., Birsa, N., de Botton, Bradamante, Franco, A., Bravar, Bressan, Andrea, S., Bültmann, E., Burtin, D., Crabb, J., Cranshaw, T., Çuhadar, DALLA TORRE, Silvia, R., van Dantzig, B., Derro, A., Deshpande, S., Dhawan, C., Dulya, S., Eichblatt, D., Fasching, F., Feinstein, C., Fernandez, S., Forthmann, B., Froi, A., Galla, J. A., Garzon, H., Gilly, Giorgi, Marcello, E., von Goeler, S., Goertz, G., Gracia, N., de Groot, M., Grosse Perdekamp, K., Haft, D., von Harrach, T., Hasegawa, P., Hautle, N., Hayashi, C. A., Heusch, N., Horikawa, V. W., Hughe, G., Igo, S., Ishimoto, T., Iwata, E. M., Kabuß, T., Kageya, A., Karev, H. J., Kessler, T. J., Ketel, J., Kiryluk, Kisselev, Y. u., D., Krämer, V., Krivokhijine, W., Kröger, V., Kukhtin, K., Kurek, J., Kyynäräinen, M., Lamanna, U., Landgraf, J. M., Le Goff, F., Lehar, A., de Lesquen, J., Lichtenstadt, M., Litmaath, A., Magnon, G. K., Mallot, F., Marie, Martin, Anna, J., Martino, T., Matsuda, B., Maye, J. S., Mccarthy, K., Medved, W., Meyer, G., van Middelkoop, D., Miller, Y., Miyachi, K., Mori, J., Moromisato, J., Nassalski, L., Naumann, T. O., Niinikoski, J. E. J., Oberski, A., Ogawa, C., Ozben, H., Pereira, F., Perrot Kunne, D., Peshekhonov, L., Pinsky, S., Platchkov, M., Plo, D., Pose, H., Postma, J., Pretz, R., Puntaferro, G., Rädel, A., Rijllart, G., Reicherz, J., Robert, M., Rodriguez, E., Rondio, B., Roscherr, I., Sabo, J., Saborido, A., Sandacz, I., Savin, Schiavon, Paolo, A., Schiller, E. P., Sichtermann, F., Simeoni, G. I., Smirnov, A., Staude, A., Steinmetz, U., Stiegler, H., Stuhrmann, M., Szleper, F., Tessarotto, D., Ther, W., Tlaczala, A., Tripet, G., Unel, M., Velasco, J., Vogt, R., Vo, C., Whitten, R., Windmolder, R., Willumeit, W., Wislicki, A., Witzmann, J., Ylöstalo, Zanetti, ANNA MARIA, K., Zaremba, and J., Zhao
Subjects: Quark, Physics, Nuclear and High Energy Physics, Particle physics, Muon, Valence (chemistry), SMC, Hadron, FOS: Physical sciences, SIDIS, Polarized quark distributions, Deep inelastic scattering, High Energy Physics - Experiment, Nuclear physics, High Energy Physics - Experiment (hep-ex), Deuterium, High Energy Physics::Experiment, Nucleon, Particle Physics - Experiment
Abstract: We present a measurement of semi-inclusive spin asymmetries for positively and negatively charged hadrons from deep inelastic scattering of polarised muons on polarised protons and deuterons in the range $0.003$1 GeV$^2$. Compared to our previous publication on this subject, with the new data the statistical errors have been reduced by nearly a factor of two. From these asymmetries and our inclusive spin asymmetries we determine the polarised quark distributions of valence quarks and non-strange sea quarks at $Q^2$=10 GeV$^2$. The polarised $u$ valence quark distribution, $\Delta u_v(x)$, is positive and the polarisation increases with $x$. The polarised $d$ valence quark distribution, $\Delta d_v(x)$, is negative and the non-strange sea distribution, $\Delta \bar q(x)$, is consistent with zero over the measured range of $x$. We find for the first moments $\int_0^1 \Delta u_v(x) dx = 0.77 \pm 0.10 \pm 0.08$, $\int_0^1 \Delta d_v(x) dx = -0.52 \pm 0.14 \pm 0.09$ and $\int_0^1 \Delta \bar q(x) dx= 0.01 \pm 0.04 \pm 0.03$, where we assumed $\Delta \bar u(x) = \Delta \bar d(x)$. We also determine for the first time the second moments of the valence distributions $\int_0^1 x \Delta q_v(x) dx$., Comment: 17 pages
Published: 1998

24. The spin-dependent structure function g1(x) of the proton from polarized deep-inelastic muon scattering

Author: Michal Szleper, D. Crabb, Heinrich B. Stuhrmann, A. Schiller, Naoaki Horikawa, J. Pretz, A. Rijllart, Bernardo Adeva, T. Kageya, J. Ylöstalo, A. Ogawa, L. Naumann, C. Dulya, I. Sabo, C. A. Whitten, J. Kyynäräinen, A. Tripet, D. Peshekhonov, F. Lehar, V. W. Hughes, G. Gracia, P. Schiavon, A. Sandacz, M. Giorgi, V. G. Krivokhijine, B. Mayes, Rudiger Voss, Yu. Kisselev, S. K. Dhawan, B. Derro, J. S. McCarthy, S. Bültmann, T. O. Niinikoski, Ulrich Landgraf, E. Arik, Alan D. Martin, F. Marie, A. Staude, M. Litmaath, Etienne Burtin, David Miller, Matias Rodriguez, Kunikazu Mori, J. Moromisato, A. Magnon, D. Thers, E. P. Sichtermann, K. Kurek, E. M. Kabuß, E. Rondio, D. Pose, Abhay Deshpande, K. Zaremba, I.A. Savin, T. J. Ketel, M. Plo, F. Feinstein, A. Karev, Matthias Grosse Perdekamp, G. Bardin, A. Witzmann, Patrick Hautle, J. M. Le Goff, G. Igo, J. Kiryluk, Clemens A. Heusch, T. Çuhadar, S. Platchkov, J. Lichtenstadt, R. Birsa, J. A. Garzon, Franco Bradamante, W. Wislicki, A. Steinmetz, P. Berglund, K. Medved, N. De Groot, Anna Zanetti, H. Postma, B. Frois, J. Saborido, W. Tlaczala, B. Roscherr, Lawrence Pinsky, T. Matsuda, S. Ishimoto, U. Stiegler, H. Gilly, G. Unel, F. Simeoni, G.I. Smirnov, R. van Dantzig, R. Puntaferro, J. E.J. Oberski, J. Nassalski, G. van Middelkoop, G. Rädel, W. Meyer, B. Badelek, C. Fernandez, Mayda Velasco, N. Hayashi, L. Betev, F. Perrot-Kunne, S. Eichblatt, A. Bravar, V. Kuktin, J. Cranshaw, D. Fasching, J. Vogt, G. Baum, Takahiro Iwata, G. Reicherz, Roland Windmolders, S. Dalla Torre, A. Arvidson, H. Pereira, A. de Lesquen, St. Goertz, N. de Botton, Andrea Bressan, J. Martino, A. Gallas, G. K. Mallot, Y. Miyachi, M. Lamanna, S. Forthmann, K. Haft, F. Tessarotto, W. Kröger, B., Adeva, E., Arik, A., Arvidson, B., Badelek, G., Bardin, G., Baum, P., Berglund, L., Betev, Birsa, Renato, N., de Botton, Bradamante, Franco, A., Bravar, Bressan, Andrea, S., Bültmann, E., Burtin, D., Crabb, J., Cranshaw, T., Çuhadar, DALLA TORRE, Silvia, R., van Dantzig, B., Derro, A., Deshpande, S., Dhawan, C., Dulya, S., Eichblatt, D., Fasching, F., Feinstein, C., Fernandez, S., Forthmann, B., Froi, A., Galla, J. A., Garzon, H., Gilly, Giorgi, Marcello, S., Goertz, G., Gracia, N., de Groot, K., Haft, D., von Harrach, T., Hasegawa, P., Hautle, N., Hayashi, C. A., Heusch, N., Horikawa, V. W., Hughe, G., Igo, S., Ishimoto, T., Iwata, E. M., Kabuß, T., Kageya, A., Karev, T. J., Ketel, J., Kiryluk, Kisselev, Y. u., V., Krivokhijine, W., Kröger, V., Kuktin, K., Kurek, J., Kyynäräinen, M., Lamanna, U., Landgraf, J. M., Le Goff, F., Lehar, A., de Lesquen, J., Lichtenstadt, M., Litmaath, A., Magnon, G. K., Mallot, F., Marie, Martin, Anna, J., Martino, T., Matsuda, B., Maye, J. S., Mccarthy, K., Medved, W., Meyer, G., van Middelkoop, D., Miller, Y., Miyachi, K., Mori, J., Moromisato, J., Nassalski, L., Naumann, T. O., Niinikoski, J. E. J., Oberski, A., Ogawa, M., Perdekamp, H., Pereira, F., Perrot Kunne, D., Peshekhonov, L., Pinsky, S., Platchkov, M., Plo, D., Pose, H., Postma, J., Pretz, R., Puntaferro, G., Rädel, A., Rijllart, G., Reicherz, M., Rodriguez, E., Rondio, B., Roscherr, I., Sabo, J., Saborido, A., Sandacz, I., Savin, Schiavon, Paolo, A., Schiller, E. P., Sichtermann, F., Simeoni, G. I., Smirnov, A., Staude, A., Steinmetz, U., Stiegler, H., Stuhrmann, M., Szleper, F., Tessarotto, D., Ther, W., Tlaczala, A., Tripet, G., Unel, M., Velasco, J., Vogt, R., Vo, C., Whitten, R., Windmolder, W., Wislicki, A., Witzmann, J., Ylöstalo, Zanetti, ANNA MARIA, K., Zaremba, and (Astro)-Particles Physics
Subjects: Physics, Quantum chromodynamics, DIS, Nuclear and High Energy Physics, Particle physics, Muon, Proton, SMC, Scattering, g1 structure function, Perturbative QCD, Deep inelastic scattering, Nuclear physics, Sum rule in quantum mechanics, Nucleon, Particle Physics - Experiment
Abstract: We present a new measurement of the virtual photon proton asymmetry $A_1^{\rm p}$ from deep inelastic scattering of polarized muons on polarized protons in the kinematic range $0.0008 < x < 0.7$ and $0.2 < Q^{2} < 100$ GeV$^{2}$. With this, the statistical uncertainty of our measurement has improved by a factor of $2$ compared to our previous measurements. The spin-dependent structure function $g_{1}^{\rm p}$ is determined for the data with $Q^{2} > 1$ GeV$^{2}$. A perturbative QCD evolution in next-to-leading order is used to determine $g_1^{\rm p}(x)$ at a constant $Q^2$. At $Q^{2} = 10$ GeV$^{2}$ we find, in the measured range, $\int_{0.003}^{0.7} g_{1}^{\rm p}(x){\rm d}x = 0.139 \pm 0.006~({\rm stat})\pm 0.008~({\rm syst)} \pm 0.006~({\rm evol})$. The value of the first moment $\Gamma_{1}^{\rm p} = \int_{0}^{1} g_{1}^{\rm p}(x){\rm d}x$ of $g_{1}^{\rm p}$ depends on the approach used to describe the behaviour of $g_{1}^{\rm p}$ at low $x$. We find that the Ellis-Jaffe sum rule is violated. With our published result for $\Gamma_{1}^{\rm d}$ we confirm the Bjorken sum rule with an accuracy of $\approx 15\%$ at the one standard deviation level.
Published: 1997

25. The spin-dependent structure function g1(x) of the deuteron from polarized deep-inelastic muon scattering

Author: S. Bültmann, T. Kageya, M. Boutemeur, D. Fasching, T. Pussieux, A. Bressan, J. E.J. Oberski, E. M. Kabuß, E. Burtin, T. Matsuda, D.V. Peshekhonov, K. M. Teichert, I. Sabo, Jay Roberts, I.A. Savin, V. G. Krivokhijine, J. Nassalski, J. Zhao, N. de Botton, Victor Kukhtin, A. Bravar, B. W. Mayes, E. Arik, R. Seitz, G. Gratia, W. Tlaczala, J. Cranshaw, H. J. Kessler, Roland Windmolders, M. Lowe, A. Arvidson, J. Martino, A. Gallas, A. Nagaitsev, G. K. Mallot, M. Lamanna, Y. Ylöstalo, David Miller, Aina Yañez, G. Bardin, Drew Parks, L. Naumann, G. Unel, T. O. Niinikoski, J. Lichtenstadt, J. Kyynäräinen, F. Tessarotto, W. Kröger, H. Postma, J. Kiryluk, J. Saborido, M. Litmaath, L. S. Pinsky, P. Schiavon, N. Horikawa, B. Derro, D. von Harrach, M. K. Ballintijn, D. Krämer, Abhay Deshpande, F. Sever, R. Puntaferro, K. P. Schüler, E. Rondio, J. H. Moromisato, Satish Dhawan, G. Baum, F. Feinstein, T. Iwata, Yannis K. Semertzidis, J. Pyrlik, Mayda Velasco, L. Betev, S. Eichblatt, A. Witzmann, Patrick Hautle, P. Björkholm, T. Hasegawa, S. Dalla Torre, J. C. Faivre, L. Klostermann, J. M. Le Goff, F. Marie, J. S. McCarthy, C. Cavata, Regine Willumeit, Matias Rodriguez, C. Dulya, G. van Middelkoop, A. Ogawa, P. Berglund, B. Frois, S. Platchkov, Roy Weinstein, N. De Groot, J. Vogt, E. von Goeler, P. Shanahan, A. Kishi, A. Rosado, G. Rädel, G. Igo, S. Rock, T. Gaussiran, L. V. Kalinovskaya, Clemens A. Heusch, F. Simeoni, G.I. Smirnov, Ricardo Piegaia, T. Çuhadar, A. de Lesquen, J. Pretz, J. A. Garzon, Franco Bradamante, D. Y. Bardin, M. Giorgi, J. Polec, B. Badelek, C. Fernandez, R. Birsa, N. Hayashi, A. Sandacz, F. Perrot-Kunne, C.S. Ozben, S. Trentalange, D. G. Crabb, Yu. Kisselev, W. Wislicki, A. Steinmetz, T. Lindqvist, D. L. Adams, T. Akdogan, D. Pose, A. Rijllart, Bernardo Adeva, A. Dyring, Heinrich B. Stuhrmann, A. Staude, T. J. Ketel, V. W. Hughes, Ulrich Landgraf, A. Karev, F. Lehar, A. Magnon, A. Tripet, B. E. Bonner, M. Grosse-Perdekamp, Rudiger Voss, Michal Szleper, S. Ishimoto, R. van Dantzig, I. G. Bird, E. P. Sichtermann, K. Zaremba, M. Plo, U. Stiegler, Faustino Gómez, Kunikazu Mori, K. Medved, Anna Zanetti, K. Kurek, C. A. Whitten, Anne-Laure Martin, (Astro)-Particles Physics, D., Adam, B., Adeva, T., Akdogan, E., Arik, A., Arvidson, B., Badelek, M. K., Ballintijn, D., Bardin, G., Bardin, G., Baum, P., Berglund, L., Betev, I. G., Bird, Birsa, Renato, P., Björkholm, B. E., Bonner, N., de Botton, M., Boutemeur, Bradamante, Franco, A., Bravar, Bressan, Andrea, S., Bültmann, E., Burtin, C., Cavata, D., Crabb, J., Cranshaw, T., Çuhadar, DALLA TORRE, Silvia, R., van Dantzig, B., Derro, A., Deshpande, S., Dhawan, C., Dulya, A., Dyring, S., Eichblatt, J. C., Faivre, D., Fasching, F., Feinstein, C., Fernandez, B., Froi, A., Galla, J. A., Garzon, T., Gaussiran, Giorgi, Marcello, E., von Goeler, F., Gomez, G., Gracia, N., de Groot, M., Grosse Perdekamp, D., von Harrach, T., Hasegawa, P., Hautle, N., Hayashi, C. A., Heusch, N., Horikawa, V. W., Hughe, G., Igo, S., Ishimoto, T., Iwata, E. M., Kabuß, T., Kageya, L., Kalinovskaya, A., Karev, H. J., Kessler, T. J., Ketel, J., Kiryluk, A., Kishi, Kisselev, Y. u., L., Klostermann, D., Krämer, V., Krivokhijine, W., Kröger, V., Kukhtin, K., Kurek, J., Kyynäräinen, M., Lamanna, U., Landgraf, J. M., Le Goff, F., Lehar, A., de Lesquen, J., Lichtenstadt, T., Lindqvist, M., Litmaath, M., Lowe, A., Magnon, G. K., Mallot, F., Marie, Martin, Anna, J., Martino, T., Matsuda, B., Maye, J. S., Mccarthy, K., Medved, G., van Middelkoop, D., Miller, K., Mori, J., Moromisato, A., Nagaitsev, J., Nassalski, L., Naumann, T. O., Niinikoski, J. E. J., Oberski, A., Ogawa, C., Ozben, D. P., Park, F., Perrot Kunne, D., Peshekhonov, R., Piegaia, L., Pinsky, S., Platchkov, M., Plo, J., Polec, D., Pose, H., Postma, J., Pretz, R., Puntaferro, T., Pussieux, J., Pyrlik, G., Rädel, G., Rijllart, J. B., Robert, S., Rock, M., Rodriguez, E., Rondio, A., Rosado, I., Sabo, J., Saborido, A., Sandacz, I., Savin, Schiavon, Paolo, K. P., Schüler, R., Seitz, Y., Semertzidi, F., Sever, P., Shanahan, E. P., Sichtermann, Simeoni, Fabrizio, G. I., Smirnov, A., Staude, A., Steinmetz, U., Stiegler, H., Stuhrmann, M., Szleper, K. M., Teichert, F., Tessarotto, W., Tlaczala, S., Trentalange, A., Tripet, G., Unel, M., Velasco, J., Vogt, R., Vo, R., Weinstein, C., Whitten, R., Windmolder, R., Willumeit, W., Wislicki, A., Witzmann, A., Yañez, Y., Ylöstalo, Zanetti, ANNA MARIA, K., Zaremba, and J., Zhao
Subjects: Physics, DIS, Nuclear and High Energy Physics, Strange quark, Muon, SMC, Scattering, g1 structure function, Perturbative QCD, Deep inelastic scattering, Nuclear physics, High Energy Physics::Experiment, Sum rule in quantum mechanics, Nucleon, Particle Physics - Experiment, Spin-½
Abstract: We present a new measurement of the spin-dependent structure function $g_{1}^{\rm d}$ of the deuteron from deep inelastic scattering of 190 GeV polarized muons on polarized deuterons. The results are combined with our previous measurements of $g_{1}^{\rm d}$. A perturbative QCD evolution in next-to-leading order is used to compute $g_{1}^{\rm d}(x)$ at a constant $Q^{2}$. At $Q^{2} = 10$ GeV$^{2}$, we obtain a first moment $\Gamma_{1}^{\rm d} = \int_{0}^{1} g_{1}^{\rm d}{\rm d}x = 0.041 \pm 0.008$, a flavour-singlet axial charge of the nucleon $a_{0} = 0.30 \pm 0.08$, and an axial charge of the strange quark $a_{s} = -0.09 \pm 0.03$. Using our earlier determination of $\Gamma_{1}^{\rm p}$, we obtain $\Gamma_1^{\rm p} - \Gamma_1^{\rm n} = 0.183 \pm 0.035$ at $Q^2 = 10\,\mbox{GeV}^2$. This result is in agreement with the Bjorken sum rule which predicts $\Gamma_1^{\rm p} - \Gamma_1^{\rm n} = 0.186 \pm 0.002$ at the same $Q^2$.
Published: 1997

26. The outer tracker detector of the HERA-B experiment. Part III: Operation and performance

Author: Z. Ke, O. Steinkamp, C. Stegmann, M. Ouchrif, G. Evgrafov, W. Hulsbergen, T. Buran, B. Schmidt, C. Padilla, R. Eckmann, A. S. Schwarz, R. Wurth, Jinghui Yang, R. Pernack, A. Moshkin, Yunpeng Liu, Yu.T. Kiryushin, Dmitry Emeliyanov, S. Nowak, M. Walter, Z. Zhu, M. Beck, G. Medin, I. Golutvin, A. Lanyov, Z. Zheng, I. Vukotic, M. Capeans, S. Vassiliev, A. Petrukhin, G. Bohm, Hermann Kolanoski, K. Berkhan, R. Mankel, D. Pose, Marcus Hohlmann, R. Zimmermann, J. Ni, Y. Jia, U. Uwer, I. Siccama, E. Michel, S. Karabekyan, Y. Wang, H. Schröder, N. Tesch, Th.S. Bauer, H. Albrecht, H. Deckers, S. Somov, B.X. Chen, X. Dong, C. Jiang, A. Spiridonov, J.J. Wang, V. Souvorov, A. Schreiner, U. Schwanke, K. Höpfner, S. Solunin, D. Krücker, D. Vishnevsky, H. Kapitza, K. Smirnov, I. Tsakov, M. Bruinsma, and T. Lohse
Subjects: Physics, Nuclear and High Energy Physics, Physics - Instrumentation and Detectors, Physics::Instrumentation and Detectors, business.industry, Hadron, Detector, Resolution (electron density), FOS: Physical sciences, Instrumentation and Detectors (physics.ins-det), Nuclear physics, Momentum, Optics, Planar, Gas gain, Calibration, High Energy Physics::Experiment, ddc:530, business, Instrumentation, HERA-B
Abstract: In this paper we describe the operation and performance of the HERA-B Outer Tracker, a 112674 channel system of planar drift tube layers. The performance of the HERA-B Outer Tracker system fullfilled all requirements for stable and efficient operation in a hadronic environment, thus confirming the adequacy of the honeycomb drift tube technology and of the front-end readout system. The detector was stably operated with a gas gain of 30000 in an Ar/CF4/CO2 (65:30:5) gas mixture, yielding a good efficiency for triggering and track reconstruction, larger than 95 % for tracks with momenta above 5 GeV/c. The hit resolution of the drift cells was 300 to 320 micrometers and the relative momentum resolution can be described as: sigma(p)/p (in %) = (1.61 +- 0.02) + (0.0051 +- 0.0006) p. At the end of the HERA-B running no aging effects in the Outer Tracker cells were observed., Comment: 38 pages, 20 figures. v2: Added clarifications about trigger efficiency, momentum resolution and alignment precision. Corrected typos. Improved figure quality
Published: 2007

27. INS/Ultrasound navigation system

Author: Patricio Moreno, Juan I. Giribet, and Claudio D. Pose
Subjects: ARM architecture, Engineering, business.industry, Filter (video), Dead reckoning, Global Positioning System, Navigation system, Computer vision, Artificial intelligence, Air navigation, business, Inertial navigation system, Mobile robot navigation
Abstract: The aim of this work is to present a navigation system for GPS denied environments. The system fuses measurements provided by an arrangement of ultrasonic range sensors with inertial measurements and a magnetometer. The core of the navigation computer are two microprocessors, an ARM Cortex M3 processor for low-level tasks, such as sensor acquisition and control, and an ARM Cortex A8 for computationally demanding tasks, as the fusion filter to compute navigation solutions. A brief description of the navigation computer is given, also the navigation algorithm is presented and validated through experimental results.
Published: 2015

28. Polarisation of valence and non-strange sea quarks in the nucleon from semi-inclusive spin asymmetries

Author: S. Lopez-Ponte, Yu. Kisselev, J. C. Faivre, T. O. Niinikoski, Alan D. Martin, Etienne Burtin, F. Marie, E. Rondio, T. Layda, P. Shanahan, M. Plo, K. M. Teichert, G.I. Smirnov, G. Bardin, Jinkui Zhao, R. E. Segel, A. Nagaitsev, J. M. Le Goff, K. P. Schüler, E. Arik, T. Kageya, Jay Roberts, Naoaki Horikawa, M. Grosse Perdekamp, J. H. Moromisato, S. K. Dhawan, D. Crabb, Cristino Pérez, M. Velasco, S. Dalla Torre, I. Sabo, Takahiro Iwata, J. Nassalski, J. Cranshaw, T. Gaussiran, D. J. Miller, S. Eichblatt, W. Wislicki, Iskender Atilla Reyhancan, V. G. Krivokhijine, T. Hasegawa, Michal Szleper, A. Steinmetz, Lawrence Pinsky, Patrick Hautle, J. Vogt, J.A. Garzon, J. S. McCarthy, J. Kyynäräinen, P. Schiavon, T. Matsuda, A. Ogawa, J. E.J. Oberski, S. Rock, I.G. Bird, Sergey M. Sergeev, A. Kishi, C. Fernandez, B. Frois, A. Rosado, M. Lowe, P. Björkholm, F. Sever, M. K. Ballintijn, C. Cavata, A. de Lesquen, H. J. Kessler, Abhay Deshpande, F. Feinstein, Roland Windmolders, E. P. Sichtermann, D. Peshekhonov, A. Arvidson, F. Tessarotto, L. Naumann, W. Kröger, I.A. Savin, V. W. Hughes, J. Martino, G. K. Mallot, Alessandro Bressan, C. Dulya, D. von Harrach, Roy Weinstein, N. De Groot, E. M. Kabuß, Clemens A. Heusch, Kunikazu Mori, R. Birsa, Yannis K. Semertzidis, B. W. Mayes, F. Lehar, J. Pyrlik, Ricardo Piegaia, K. Medved, E. Gülmez, R. Seitz, M. Giorgi, J. Pretz, D. Fasching, L. Betev, T. Pussieux, Aldo Penzo, G. Gracia, G. van Middelkoop, Ulrich Landgraf, N. de Botton, A. Sandacz, H. Postma, A. Witzmann, M. Lamanna, J. Saborido, L. Klostermann, Matias Rodriguez, B. Badelek, N. Hayashi, F. Perrot-Kunne, D. Pose, Regine Willumeit, A. Karev, G. Igo, A. Rijllart, A. Staude, T. Çuhadar, Bernardo Adeva, T. J. Ketel, Franco Bradamante, A. Dyring, Heinrich B. Stuhrmann, Anna Zanetti, C. A. Whitten, Günter Baum, P. Berglund, A. Magnon, E. von Goeler, A. Gomez, S. Platchkov, M. Litmaath, J. Lichtenstadt, D. Krämer, S. Ishimoto, U. Stiegler, R. van Dantzig, B. E. Bonner, C. S. Özben, Rudiger Voss, S. Bültmann, B., Adeva, E., Arik, A., Arvidson, B., Badelek, M. K., Ballintijn, G., Bardin, G., Baum, P., Berglund, L., Betev, I. G., Bird, R., Birsa, P., Björkholm, B. E., Bonner, N., de Botton, Bradamante, Franco, Bressan, Andrea, S., Bültmann, E., Burtin, C., Cavata, D., Crabb, J., Cranshaw, T., Çuhadar, DALLA TORRE, Silvia, R., van Dantzig, A., Deshpande, S., Dhawan, C., Dulya, A., Dyring, S., Eichblatt, J. C., Faivre, D., Fasching, F., Feinstein, C., Fernandez, B., Froi, J. A., Garzon, T., Gaussiran, Giorgi, Marcello, E., von Goeler, A., Gomez, G., Gracia, N., de Groot, M., Grosse Perdekamp, E., Gülmez, D., von Harrach, T., Hasegawa, P., Hautle, N., Hayashi, C. A., Heusch, N., Horikawa, V. W., Hughe, G., Igo, S., Ishimoto, T., Iwata, E. M., Kabuß, T., Kageya, A., Karev, H. J., Kessler, T. J., Ketel, A., Kishi, Kisselev, Y. u., L., Klostermann, D., Krämer, V., Krivokhijine, W., Kröger, J., Kyynäräinen, M., Lamanna, U., Landgraf, T., Layda, J. M., Le Goff, F., Lehar, A., de Lesquen, J., Lichtenstadt, M., Litmaath, S., Lopez Ponte, M., Lowe, A., Magnon, G. K., Mallot, F., Marie, Martin, Anna, J., Martino, T., Matsuda, B., Maye, J. S., Mccarthy, K., Medved, G., van Middelkoop, D., Miller, K., Mori, J., Moromisato, A., Nagaitsev, J., Nassalski, L., Naumann, T. O., Niinikoski, J. E. J., Oberski, A., Ogawa, C., Ozben, A., Penzo, C., Perez, F., Perrot Kunne, D., Peshekhonov, R., Piegaia, L., Pinsky, S., Platchkov, M., Plo, D., Pose, H., Postma, J., Pretz, T., Pussieux, J., Pyrlik, I., Reyhancan, A., Rijllart, J. B., Robert, S., Rock, M., Rodriguez, E., Rondio, A., Rosado, I., Sabo, J., Saborido, A., Sandacz, I., Savin, Schiavon, Paolo, K. P., Schüler, R., Segel, R., Seitz, Y., Semertzidi, S., Sergeev, F., Sever, P., Shanahan, E. P., Sichtermann, G. I., Smirnov, A., Staude, A., Steinmetz, U., Stiegler, H., Stuhrmann, M., Szleper, K. M., Teichert, F., Tessarotto, M., Velasco, J., Vogt, R., Vo, R., Weinstein, C., Whitten, R., Windmolder, R., Willumeit, W., Wislicki, A., Witzmann, Zanetti, ANNA MARIA, J., Zhao, and (Astro)-Particles Physics
Subjects: Physics, Quark, Nuclear and High Energy Physics, Particle physics, Muon, Valence (chemistry), spin dependent parton distribution, High Energy Physics::Phenomenology, Hadron, Nuclear Theory, Deep inelastic scattering, valence quarks, Nuclear physics, Distribution function, spin dependent parton distributions, Deuterium, deep inelastic scattering, High Energy Physics::Experiment, Astrophysics::Earth and Planetary Astrophysics, Nucleon, Particle Physics - Experiment
Abstract: We present a measurement of semi-inclusive spin asymmetries for positively and negatively charged hadrons from deep inelastic scattering of polarised muons on polarised protons and deuterons in the range 0.003
Published: 1996

29. Measurement of the J/ψ production cross section in 920 GeV/c fixed-target proton–nucleus interactions

Author: S. Essenov, M. Adams, Samim Erhan, B. Schwenninger, S. De Castro, P. Kreuzer, Laura Fabbri, C. Padilla, M. Negodaev, D. Goloubkov, D. Ressing, Dmitry Emeliyanov, Yu.T. Kiryushin, E. B. Klinkby, Y. Bagaturia, T. Zivko, Z. Zheng, Mogens Dam, L. Garrido, J. Batista, I. Massa, M. Symalla, L. Matchikhilian, M. Feuerstack-Raible, L. Sozuer, K. M. Danielsen, D. Peralta, Wouter Hulsbergen, I. Vukotic, Maksym Titov, M. Braeuer, S. Shuvalov, M. Ispiryan, Y. Vassiliev, S. Masciocchi, S. Gradl, H. Rick, Pietro Faccioli, V. Aushev, A. J. Schwartz, O. Igonkina, O. Barsukova, V. Rybnikov, M. Schmelling, T. Zeuner, C. B. Krauss, Nicola Semprini-Cesari, I. Belotelov, F. Grimaldi, H. S. Subramania, Brian Petersen, Vladislav Balagura, F. Eisele, S. Korpar, Peter Robmann, U. Schwanke, J. Flammer, M. Starič, S. Somov, M. Ouchrif, Y. Guilitsky, A. Aleksandrov, A. Somov, S. Solunin, I. Abt, Mikhail Danilov, M. T. Nunez Pardo de Vera, M. Agari, Ulrich Werthenbach, H. B. Dreis, Marcus Hohlmann, I. Tsakov, C. Cruse, H. Schroeder, U. Husemann, J. Glaess, R. Zimmermann, R. Maenner, M. Mevius, J. Kessler, Antonio Sbrizzi, A. Wurz, B. Fominykh, R. Mizuk, T. Jagla, M. A. Pleier, M. Poli, X. Dong, N.N. Karpenko, Yu.V. Mikhailov, Farid Ould-Saada, Valery Pugatch, V. Egorytchev, M. Walter, G. Medin, C. Stegmann, P. Krizan, V. Popov, Werner Hofmann, T. Hott, P. Conde, Sebastian Nowak, Igor Golutvin, D. Wegener, António Amorim, A. Vitale, D. Kruecker, H. Wahlberg, W. Gradl, C. Bauer, S. Karabekyan, I. Gorbounov, Yu. Zaitsev, M. Funcke, Jose M Hernandez, A. Bogatyrev, C. Jiang, A. Spiridonov, Antonio Zoccoli, A. S. Schwarz, B. Giacobbe, R. Spighi, S. Prystupa, T. Buran, I. Kisel, M. Bargiotti, Thomas Lohse, Vasco Amaral, A. Michetti, I. Rostovtseva, A. H. Walenta, B. Lewendel, C. van Eldik, M. Noerenberg, J. Bastos, H. Deppe, A. Gellrich, O. Gouchtchine, B. Lomonosov, G. Bohm, R. Muresan, A. Stanovnik, Andrej Gorišek, Hermann Kolanoski, M. Medinnis, D. C. Goulart, Bernhard Schmidt, I. Tikhomirov, S. J. Aplin, Th. S. Bauer, R. Pestotnik, B. Schwingenheuer, Marco Bruschi, H. Albrecht, R. Mankel, R. Wurth, D. Pose, J. Pyrlik, S. Kupper, J.D. Hansen, A. Zhelezov, K. T. Knöpfle, J. Spengler, A. Lanyov, H. Wolters, F. Sciacca, F. Khasanov, S. Keller, Y. Pylypchenko, A. Bertin, Peter Buchholz, Laura Silva, Jian Wang, M. Bruinsma, Kendall Reeves, Maurizio Piccinini, Imma Riu, A. Golutvin, B. Bobchenko, R. Pernack, T. Kvaratskheliia, A. Belkov, K. Ehret, A. Schreiner, M. Boecker, M. zur Nedden, Kwong Lau, F. Sanchez, Mikhail Zavertyaev, U. Uwer, Y. Goloubkov, Mauro Villa, João Carvalho, and H. Kapitza
Subjects: Physics, Nuclear and High Energy Physics, Particle physics, Meson, Proton, 010308 nuclear & particles physics, Nuclear Theory, 01 natural sciences, Nuclear physics, Cross section (physics), medicine.anatomical_structure, 0103 physical sciences, medicine, High Energy Physics::Experiment, Production (computer science), Nuclear Experiment, 010306 general physics, Nucleon, Nucleus, Lepton, HERA-B
Abstract: The mid-rapidity ( d σ p N / d y at y = 0 ) and total ( σ p N ) production cross sections of Jψ mesons are measured in proton–nucleus interactions. Data collected by the HERA-B experiment in interactions of 920 GeV / c protons with carbon, titanium and tungsten targets are used for this analysis. The Jψ mesons are reconstructed by their decay into lepton pairs. The total production cross section obtained is σ p N J / ψ = 663 ± 74 ± 46 nb / nucleon . In addition, our result is compared with previous measurements.
Published: 2006

30. Polarization of Λ and Λ¯ in 920 GeV fixed-target proton–nucleus collisions

Author: I. Abt, M. Adams, M. Agari, H. Albrecht, A. Aleksandrov, V. Amaral, A. Amorim, S.J. Aplin, V. Aushev, Y. Bagaturia, V. Balagura, M. Bargiotti, O. Barsukova, J. Bastos, J. Batista, C. Bauer, Th.S. Bauer, A. Belkov, Ar. Belkov, I. Belotelov, A. Bertin, B. Bobchenko, M. Böcker, A. Bogatyrev, G. Bohm, M. Bräuer, M. Bruinsma, M. Bruschi, P. Buchholz, T. Buran, J. Carvalho, P. Conde, C. Cruse, M. Dam, K.M. Danielsen, M. Danilov, S. De Castro, H. Deppe, X. Dong, H.B. Dreis, V. Egorytchev, K. Ehret, F. Eisele, D. Emeliyanov, S. Erhan, S. Essenov, L. Fabbri, P. Faccioli, M. Feuerstack-Raible, J. Flammer, B. Fominykh, M. Funcke, Ll. Garrido, A. Gellrich, B. Giacobbe, J. Gläß, D. Goloubkov, Y. Golubkov, A. Golutvin, I. Golutvin, I. Gorbounov, A. Gorišek, O. Gouchtchine, D.C. Goulart, S. Gradl, W. Gradl, F. Grimaldi, Yu. Guilitsky, J.D. Hansen, J.M. Hernández, W. Hofmann, M. Hohlmann, T. Hott, W. Hulsbergen, U. Husemann, O. Igonkina, M. Ispiryan, T. Jagla, C. Jiang, H. Kapitza, S. Karabekyan, N. Karpenko, S. Keller, J. Kessler, F. Khasanov, Yu. Kiryushin, I. Kisel, E. Klinkby, K.T. Knöpfle, H. Kolanoski, S. Korpar, C. Krauss, P. Kreuzer, P. Križan, D. Krücker, S. Kupper, T. Kvaratskheliia, A. Lanyov, K. Lau, B. Lewendel, T. Lohse, B. Lomonosov, R. Männer, R. Mankel, S. Masciocchi, I. Massa, I. Matchikhilian, G. Medin, M. Medinnis, M. Mevius, A. Michetti, Yu. Mikhailov, R. Mizuk, R. Muresan, M. zur Nedden, M. Negodaev, M. Nörenberg, S. Nowak, M.T. Núñez Pardo de Vera, M. Ouchrif, F. Ould-Saada, C. Padilla, D. Peralta, R. Pernack, R. Pestotnik, B.AA. Petersen, M. Piccinini, M.A. Pleier, M. Poli, V. Popov, D. Pose, S. Prystupa, V. Pugatch, Y. Pylypchenko, J. Pyrlik, K. Reeves, D. Reßing, H. Rick, I. Riu, P. Robmann, I. Rostovtseva, V. Rybnikov, F. Sánchez, A. Sbrizzi, M. Schmelling, B. Schmidt, A. Schreiner, H. Schröder, U. Schwanke, A.J. Schwartz, A.S. Schwarz, B. Schwenninger, B. Schwingenheuer, F. Sciacca, N. Semprini-Cesari, S. Shuvalov, L. Silva, L. Sözüer, S. Solunin, A. Somov, S. Somov, J. Spengler, R. Spighi, A. Spiridonov, A. Stanovnik, M. Starič, C. Stegmann, H.S. Subramania, M. Symalla, I. Tikhomirov, M. Titov, I. Tsakov, U. Uwer, C. van Eldik, Yu. Vassiliev, M. Villa, A. Vitale, I. Vukotic, H. Wahlberg, A.H. Walenta, M. Walter, J.J. Wang, D. Wegener, U. Werthenbach, H. Wolters, R. Wurth, A. Wurz, Yu. Zaitsev, M. Zavertyaev, T. Zeuner, A. Zhelezov, Z. Zheng, R. Zimmermann, T. Živko, and A. Zoccoli
Subjects: Physics, Nuclear and High Energy Physics, Spectrometer, 010308 nuclear & particles physics, Polarization (waves), 01 natural sciences, Baryon, Nuclear physics, medicine.anatomical_structure, 0103 physical sciences, Transverse momentum, medicine, High Energy Physics::Experiment, Statistical error, Nuclear Experiment, 010306 general physics, Nucleus, HERA-B
Abstract: A measurement of the polarization of Λ and Λ ¯ baryons produced in pC and pW collisions at s = 41.6 GeV has been performed with the HERA-B spectrometer. The measurements cover the kinematic range of 0.6 GeV / c p ⊥ 1.2 GeV / c in transverse momentum and − 0.15 x F 0.01 in Feynman-x. The polarization results from the two different targets agree within the statistical error. In the combined data set, the largest deviation from zero, + 0.054 ± 0.029 , is measured for x F ≲ − 0.07 . Zero polarization is expected at x F = 0 in the absence of nuclear effects. The polarization results for the Λ agree with a parametrization of previous measurements which were performed at positive x F values, where the Λ polarization is negative. Results of Λ ¯ polarization measurements are consistent with zero.
Published: 2006

31. Measurement of the polarisation of a high energy muon beam

Author: Shafqat Ahmad, E. Burtin, B. Frois, M. Grosse Perdekamp, R. Seitz, S. Dhawan, Drew Parks, I. Savin, M. Litmaath, M. D. Corcoran, B. Adeva, R.E. Segel, Alan D. Martin, John C. Mitchell, K. P. Schüler, J. Cranshaw, Günter Baum, T. Pussieux, Per Berglund, A. Rijllart, H. J. Kessler, Alessandro Bressan, M. Plo, G. Perez, D. von Harrach, T. Gaussiran, Roland Windmolders, Naoaki Horikawa, B. E. Bonner, M. Rodriguez, A. Arvidson, Kwong Lau, F. Marie, J. Pyrlik, C. A. Whitten, J. C. Faivre, Gerhard K. Mallot, W. Tlaczala, E. von Goeler, M. Clocchiatti, F. Lehar, D. Sanders, I. Sabo, D. Fasching, G. Igo, J.A. Buchanan, J. M. Rieubland, M. K. Ballintijn, David Miller, T. Lindqvist, Rudiger Voss, J. H. Moromisato, A. Rosado, S. Trentalange, S. Bültmann, Aldo Penzo, J. A. Garzon, Shoji Okumi, R. Kaiser, G. Bardin, A. Witzmann, Franco Bradamante, J. E.J. Oberski, S. Ishimoto, J. Martino, A. Dyring, G. van Middelkoop, V. G. Krivokhijine, J. Nassalski, B. Badelek, Sergey M. Sergeev, W. Thiel, A. Brüll, Yu. Kisselev, J. Dupont, U. Landgrat, C. Fernandez, A. Karev, G. Gracia, F. Feinstein, A. Sandacz, N. Hayashi, P. Schiavon, S. Dalla Torre, M. Velasco, R. van Dantzig, F. Perrot-Kunne, Wojciech Wislicki, S. Eichblatt, T. Hasegawa, Anna Zanetti, M. Boutemeur, G.S. Mutchler, L. Ropelewski, S. Lopez-Ponte, A. de Lesquen, H. Stuhrmann, C. A. Heusch, C. Dulya, Andrés Gómez, I. G. Bird, L. Klostermann, T. Çuhadar, A. Kishi, Ricardo Piegaia, M. Giorgi, J. Lichtenstadt, K. M. Teichert, M. de Jong, E. Rondio, T. Layda, A. Staude, J. Kyynäräinen, Jay Roberts, D. Pose, Y. Tzamouranis, J. M. Demolis, Lawrence Pinsky, Donald Crabb, Tjeerd Ketel, V. W. Hughes, Takahiro Iwata, J. S. McCarthy, P. Björkholm, F. Tessarotto, C. Cavata, S. Platchkov, P. Shanahan, Kunikazu Mori, L. Naumann, Roy Weinstein, G. Smirnov, L. Betev, K. Zaremba, E. M. Kabuss, C. Garabatos, R. Birsa, A. Magnon, J.M. Clement, B. W. Mayes, J. Saborido, J. Vogt, N. de Botton, Victor Kukhtin, M. Lamanna, D.V. Peshekhonov, M. Lowe, J. P. Chen, L. Gatignon, Donal Day, Jinkui Zhao, Aina Yañez, F. Sever, T. O. Niinikoski, H. Postma, A. Steinmetz, B., Adeva, S., Ahmad, A., Arvidson, B., Badelek, M. K., Ballintijn, G., Bardin, G., Baum, P., Berglund, L., Betev, I. G., Bird, Birsa, Renato, P., Björkholm, B. E., Bonner, N., de Botton, M., Boutemeur, Bradamante, Franco, Bressan, Andrea, A., Brüll, J., Buchanan, S., Bültmann, E., Burtin, C., Cavata, J. P., Chen, J., Clement, M., Clocchiatti, M. D., Corcoran, D., Crabb, J., Cranshaw, T., Çuhadar, DALLA TORRE, Silvia, R., van Dantzig, D., Day, J. M., Demoli, S., Dhawan, C., Dulya, J., Dupont, A., Dyring, S., Eichblatt, J. C., Faivre, D., Fasching, F., Feinstein, C., Fernandez, B., Froi, C., Garabato, J. A., Garzon, L., Gatignon, T., Gaussiran, Giorgi, Marcello, E., von Goeler, A., Gomez, G., Gracia, M., Grosse Perdekamp, D., von Harrach, T., Hasegawa, N., Hayashi, C. A., Heusch, N., Horikawa, V. W., Hughe, G., Igo, S., Ishimoto, T., Iwata, M., de Jong, E. M., Kabu, R., Kaiser, A., Karev, H. J., Kessler, T. J., Ketel, A., Kishi, Kisselev, Y. u., L., Klostermann, V., Krivokhijine, V., Kukhtin, J., Kyynäräinen, M., Lamanna, U., Landgrat, K., Lau, T., Layda, F., Lehar, A., de Lesquen, J., Lichtenstadt, T., Lindqvist, M., Litmaath, S., Lopez Ponte, M., Lowe, A., Magnon, G. K., Mallot, F., Marie, Martin, Anna, J., Martino, B., Maye, J. S., Mccarthy, G., van Middelkoop, D., Miller, J., Mitchell, K., Mori, J., Moromisato, G. S., Mutchler, J., Nassalski, L., Naumann, T. O., Niinikoski, J. E. J., Oberski, S., Okumi, D. P., Park, A., Penzo, G., Perez, F., Perrot Kunne, D., Peshekhonov, R., Piegaia, L., Pinsky, S., Platchkov, M., Plo, D., Pose, H., Postma, T., Pussieux, J., Pyrlik, J. M., Rieubland, A., Rijllart, J. B., Robert, M., Rodriguez, E., Rondio, L., Ropelewski, A., Rosado, I., Sabo, J., Saborido, A., Sandacz, D., Sander, I., Savin, Schiavon, Paolo, K. P., Schüler, R., Segel, R., Seitz, S., Sergeev, F., Sever, P., Shanahan, G., Smirnov, A., Staude, A., Steinmetz, H., Stuhrmann, W., Tlaczala, K. M., Teichert, F., Tessarotto, W., Thiel, S., Trentalange, Y., Tzamourani, M., Velasco, J., Vogt, R., Vo, R., Weinstein, C., Whitten, R., Windmolder, W., Wislicki, A., Witzmann, A., Yañez, Zanetti, ANNA MARIA, K., Zaremba, and J., Zhao
Subjects: Physics, Nuclear and High Energy Physics, Large Hadron Collider, Muon, Physics::Instrumentation and Detectors, Polarimeter, positron energy spectrum, muon beam polarimeter, Nuclear physics, Positron, Energy spectrum, Physics::Accelerator Physics, High Energy Physics::Experiment, Detectors and Experimental Techniques, Nuclear Experiment, Instrumentation, Energy (signal processing), Beam (structure)
Abstract: A muon beam polarimeter has been built for the SMC experiment at the CERN SPS, for muon energies of 100 to 200 GeV. The beam polarisation is determined from the energy spectrum of positrons from the decay μ+ → e+ νcνμ. A polarisation of - 0.82 is measured with a relative systematic accuracy of 3%.
Published: 1994

32. Search for the flavor-changing neutral current decay D0→μ+μ− with the HERA-B detector

Author: A. Alexandrov, Laura Silva, Jian Wang, João Carvalho, H. Kapitza, S. Solunin, Sebastian Nowak, F. Sanchez, S. J. Aplin, B. Schwingenheuer, I. Massa, J. Pyrlik, S. Essenov, Maurizio Piccinini, A. Bertin, D. Wegener, Mikhail Danilov, N.N. Karpenko, L. Matchikhilian, A. Belkov, Mikhail Zavertyaev, Y. Goloubkov, R. Pernack, I. Abt, H. Wahlberg, W. Gradl, C. Cruse, P. Kreuzer, J. Bastos, S. De Castro, K. Smirnov, S. Karabekyan, B. Fominykh, S. Somov, J. Glaess, Yu.V. Mikhailov, R. Spighi, D. Goloubkov, Mauro Villa, M. T. Nunez Pardo de Vera, Dmitry Emeliyanov, T. Zivko, M. Ouchrif, H. B. Dreis, Samo Korpar, A. Wurz, M. Mevius, Ulrich Werthenbach, M. A. Pleier, O. Barsukova, V. Popov, Werner Hofmann, Rok Pestotnik, Robert Harr, R. Muresan, C. Bauer, H. Albrecht, M. zur Nedden, Peter Buchholz, L. Garrido, C. B. Krauss, I. Gorbounov, R. Wurth, D. Pose, A. H. Walenta, Mogens Dam, T. Zeuner, S. Kupper, A. J. Schwartz, D. Kruecker, A. Schreiner, C. Jiang, Kwong Lau, Y. Vassiliev, Y. Guilitsky, I. Belotelov, Wouter Hulsbergen, T. Kvaratskheliia, J. Flammer, A. Stanovnik, I. Tikhomirov, Valery Pugatch, Pietro Faccioli, A. Spiridonov, A. Michetti, M. Funcke, V. Aushev, K. M. Danielsen, H. S. Subramania, S. Nam, B. Schwenninger, Y. Bagaturia, Yu.T. Kiryushin, Y. Pylypchenko, M. Nörenberg, B. Lomonosov, L. Sozuer, J. Kessler, M. Feuerstack-Raible, M. Medinnis, B. Lewendel, Peter Robmann, Antonio Sbrizzi, O. Igonkina, M. Buchler, T. Jagla, X. Dong, Z. Zheng, J. Batista, S. Shuvalov, V. Rybnikov, U. Uwer, Imma Riu, Maksym Titov, C. van Eldik, H. Deppe, M. Bargiotti, A. Golutvin, Thomas Lohse, O. Rick, B. Bobchenko, D. Peralta, J. Shiu, M. Schmelling, I. Vukotic, C. Stegmann, H. Schröder, S. Masciocchi, A. Vitale, Bernhard Schmidt, M. Bruinsma, A. S. Schwarz, P. Krizan, Nicola Semprini-Cesari, M. Symalla, M. Ispiryan, O. Gouchtchine, Th. S. Bauer, Kendall Reeves, G. Bohm, M. Böcker, A. Pose, T. Hott, Laura Fabbri, Marco Bruschi, P. Conde, Igor Golutvin, S. Gradl, C. Padilla, R. Mizuk, Hermann Kolanoski, D. C. Goulart, G. Medin, Farid Ould-Saada, Antonio Zoccoli, Yu. Zaitsev, Vladislav Balagura, Vasco Amaral, I. Tsakov, K. Ehret, F. Eisele, M. Starič, A. Somov, M. Poli, Jose M Hernandez, A. Bogatyrev, D. Ressing, T. Buran, B. Giacobbe, A. Gorisek, S. Prystupa, F. Grimaldi, M. Adams, M. Negodaev, J.D. Hansen, A. Zhelezov, K. T. Knöpfle, V. Egorytchev, M. Bräuer, M. Walter, F. Khasanov, António Amorim, S. Keller, J. Spengler, R. Maenner, A. Lanyov, H. Wolters, F. Sciacca, U. Husemann, and R. Zimmermann
Subjects: Physics, Nuclear physics, Nuclear and High Energy Physics, Particle physics, Neutral current, 010308 nuclear & particles physics, Branching fraction, Flavor-changing neutral current, 0103 physical sciences, Detector, 010306 general physics, 01 natural sciences, HERA-B
Abstract: We report on a search for the flavor-changing neutral current decay D 0 → μ + μ − using 50 × 10 6 events recorded with a dimuon trigger in interactions of 920 GeV protons with nuclei by the HERA-B experiment. We find no evidence for such decays and set a 90% confidence level upper limit on the branching fraction B ( D 0 → μ + μ − ) 2.0 × 10 − 6 .
Published: 2004

33. Inclusive V production cross sections from 920 GeV fixed target proton-nucleus collisions

Author: Imma Riu, F. Sanchez, Hernan Wahlberg, L. Garrido, B. Bobchenko, N. Tesch, Brian Petersen, I. Kisel, C. Stegmann, C. B. Krauss, Mikhail Zavertyaev, O. Barsukova, J. L. Rosen, O. Steinkamp, Ulrich Werthenbach, D. Ryzhikov, F. Klefenz, D. Dujmic, I. Belotelov, H. Kapitza, H. Thurn, Yu. Pavlenko, P. Kreuzer, Jenny Ivarsson, Pietro Faccioli, M. Beck, I. Golutvin, V. Aushev, R. Wurth, T. Perschke, Mauro Villa, D. Broemmelsiek, M. Chmeissani, H. Sun, J. Yang, A. Michetti, Paul Edmund Karchin, A. Stanovnik, H. Fleckenstein, M. Ouchrif, S. Korpar, J. Luidemann, M. Spahn, K. Hofner, A. Kaoukher, Helmut Wolters, V. Saveliev, L. Sozuer, V. Vagnoni, J. Chamanina, A. Bogatyrev, Farid Ould-Saada, Kwong Lau, B. Lewende, M. Mevius, Yu.V. Mikhailov, L. Seybold, Ramon Miquel, J. D. Hansen, Søren Schmidt, Peter Robmann, Wolfgang Wagner, R. van Staa, R Stdenis, S. Hausmann, R. Chistov, D. Samtleben, B. Lomonosov, K. Berkhan, V. Rusinov, V. Eiges, M. Medinnis, D. C. Goulart, Dmitry Emeliyanov, S. Schaller, Z. Ke, I. Belyaev, A. Zhelezov, Samim Erhan, W. Ruckstuhl, A. Moshkin, V. Popov, Werner Hofmann, P.E. Schlein, J. Glass, R. F. Schwitters, Valery Pugatch, S. Essenov, J.J. Wang, D. Wegener, J. Rieling, Roberto Spighi, R. Mankel, A. Lange, D. Krücker, S. Nowak, D. Pose, J. Bastos, A. Belkov, Hyun-Chul Kim, N.N. Karpenko, W. Schmidt-Parzefall, Umberto Marini Bettolo Marconi, S. Steinbeck, V. Souvorov, A. Schreiner, Thomas Hamacher, B. Dolgoshein, W. Gradl, M. A. Pleier, C. Borgmeier, A. S. Schwarz, K. T. Knöpfle, B. Schwenninger, K. E. K. Gerndt, Antonio Zoccoli, Y. Guilitsky, Y. Vassiliev, U. Straumann, Yu.T. Kiryushin, I. Gorbounov, F. Saadi-Ludemannm, M. Dressel, M. Poli, D. Peralta, T. Lohse, I. Negri, M. Capeans, A. Bertin, Antonio Sbrizzi, Z. Zheng, S. Karabekyan, Y. Bagaturia, S. Ramachandran, G. Leffers, A. Vitale, I. Vukotic, S. Semenov, J. Zweizig, K. M. Danielsen, Benedetto Giacobbe, A. Gellrich, X. Dong, S. Shuvalov, Reinhard Männer, B. Schwingenheuer, B. Fominykh, F. Khasanov, M. Nörenberg, V. Rybnikov, M. Funcke, M. Walter, Nicola Semprini-Cesari, M. Bruinsma, M. Bargiotti, P. Pakhlov, C. van Eldik, H. Deppe, David Gascon, M. Hildebrandt, Kendall Reeves, I. C. Legrand, Vasco Amaral, S. Fourletov, M. Rietz, J. Shiu, O. Gouchtchine, J. Pyrlik, S. Solunin, W. Fallot-Burghardt, S. Keller, S. F. Takach, Christian Bauer, T. Glebe, Andrej Gorišek, D. Galli, H. Schröder, M. Ispiryan, M. Titov, G. Bohm, V. Bassetti, T. Fuljahn, Hermann Kolanoski, L. Matchikhilian, F Sciacca, Klaus Dehmelt, S. Gradl, R. Pernack, S. Issever, H. Itterbeck, V. Kochetkov, T. Zeuner, D. Skrk, I. Abt, B. X. Chen, M. Sang, P. Truöl, W. Hulsbergen, R. Baghshetsyan, P. J. Weyers, R. Wanke, J. Spengler, B. Schmidt, K. Ehret, Yuriy Pylypchenko, R. Pestotnik, Y. Jia, T. Buran, R. Loke, F. Sun, Ulrich Husemann, J. Flammer, M. Böcker, A. Pose, C. Jiang, A. Spiridonov, A. Christensen, M. Symalla, R. Eckmann, A. Golutvin, S. J. Aplin, João Carvalho, U. Trunk, M. S. Atiya, I. Tsakov, S. Nam, Olga Igonkina, V. Balagura, R. Muresan, M. Feuerstack-Raible, Y. Wang, C. Hast, G. Zech, A. Mohapatra, H. B. Dreis, M. Buchler, Mogens Dam, I. Arino, R. Mizuk, U. Schwanke, Laura Fabbri, S. De Castro, M. Danilov, P. Krizan, S. Masciocchi, A. H. Walenta, D. Goloubkov, K. Riechmann, B. Moshous, A. Lanyov, G. Medin, Z. Zhu, H. Deckers, A. Soldatov, T. Zivko, Marcus Hohlmann, A. Arefiev, F. Ratnikov, I. Tikhomirov, H. Albrecht, R. Zimmermann, I. Massa, A. Garcia, R. F. Harr, M. T. N. P. de Vera, T. Oest, D. Ressing, V. Egorytchev, A. Oliveira, A. Wurz, M. Bräuer, C. Rothe, H. D. Schultz, António Amorim, Peter Buchholz, T. Kvaratskheliia, Th.S. Bauer, T. Walter, M. Starič, A. Somov, M. Adams, E. Sexauer, M. Negodaev, Yang Liu, A. J. Schwartz, D. Stieler, Jose M Hernandez, M. Bruschi, M. Piccinini, A. Hoscher, G.J. Wagner, I. Siccama, M. Schmelling, S. Barsuk, S. Spratte, F. Eisele, M. Capponi, T. Hott, P. Conde, T. Jagla, S. Somov, Yu. Zaitsev, C. Cruse, C. Padilla, S. Xella-Hansen, A. Abyzov, and U. Uwer
Subjects: Physics, Physics and Astronomy (miscellaneous), Proton, 010308 nuclear & particles physics, Sigma, HERA, Lambda, 7. Clean energy, 01 natural sciences, Atomic mass, Nuclear physics, 0103 physical sciences, High Energy Physics::Experiment, Atomic physics, Nuclear Experiment, Nucleon, 010303 astronomy & astrophysics, Engineering (miscellaneous), HERA-B, Bar (unit)
Abstract: Inclusive differential cross sections dsigma(pA)/dx(F) and dsigma(pA)/dp(t)(2) for the production of K-S(0), Lambda, and (U) over bar particles are measured at HERA in proton-induced reactions on C, Al, Ti, and W targets. The incident beam energy is 920 GeV, corresponding to roots = 41.6 GeV in the proton-nucleon system. The ratios of differential cross sections dsigma(pA)(K-S(0))/dsigma(pA)(Lambda) and dsigma(pA)((U) over bar)/dsigma(pA) (Lambda) are measured to be 6.2 +/- 0.5 and 0.66 +/- 0.07, respectively, for x(F) approximate to -0.06. No significant dependence upon the target material is observed. Within errors, the slopes of the transverse momentum distributions da,Ald t also show no significant dependence upon the target material. The dependence of the extrapolated total cross sections sigma(pA) on the atomic mass A of the target material is discussed, and the deduced cross sections per nucleon sigma(pN) are compared with results obtained at other energies.
Published: 2003

34. J/psi production via chi(c) decays in 920 GeV pA interactions

Author: Samim Erhan, P. Kreuzer, M. Noerenberg, M. T. Nunez Pardo de Vera, R. Muresan, B. Schmidt, L. Garrido, H. B. Dreis, K. Berkhan, T. Hott, A. Stanovnik, U. Uwer, Sebastian Nowak, V. Rusinov, D. Wegener, R. Mizuk, C. Borgmeier, W. Gradl, M. Walter, D. Ryzhikov, Peter Robmann, M. Hildebrandt, S. Schmidt, B. A. Petersen, V. Saveliev, O. Gouchtchine, R. vanStaa, K. Riechmann, J. Yang, Pietro Faccioli, I. Massa, V. Aushev, J.D. Hansen, M. Spahn, C. Cruse, H. Wahlberg, D. Dujmic, J. Glaess, G. Bohm, C. Hast, Hermann Kolanoski, M. Dressel, A. Somov, G. Medin, J. Chamanina, J. Zweizig, P.E. Schlein, K. M. Danielsen, R. F. Schwitters, R. Eckmann, P. Conde, D. Kruecker, Igor Golutvin, M. Boecker, T. Jagla, S. Schaller, A. Moshkin, R. Wanke, A. Zhelezov, Yu. Zaitsev, Y. Pylypchenko, O. Steinkamp, T. Zivko, L. Sozuer, F. Sanchez, Jenny Ivarsson, M. Capponi, D. Goloubkov, K. T. Knöpfle, Kwong Lau, A. Gellrich, W. Schmidt-Parzefall, R. Spighi, Thomas Hamacher, Y. Vassiliev, I. Negri, G. Leffers, Rok Pestotnik, M. Symalla, S. J. Aplin, H. Schroeder, S. Essenov, A. Michetti, Paul Edmund Karchin, Y. Guilitsky, S. Steinbeck, S. Solunin, W. Fallot-Burghardt, U. Werthenbach, Yu.V. Mikhailov, A. Kaoukher, G.J. Wagner, B. Lewendel, David Gascon, S. F. Takach, M. Titov, T. Zeuner, A. H. Walenta, Y. Wang, J. Spengler, A. Belkov, L. Matchikhilian, O. Barsukova, S. Karabekyan, R Stdenis, U. Trunk, A. J. Schwartz, D. Stieler, Jose M Hernandez, I. Siccama, I. Abt, H. Itterbeck, Ramon Miquel, R. Baghshetsyan, D. C. Goulart, D. Galli, V. Popov, Werner Hofmann, Imma Riu, Mikhail Zavertyaev, B. Dolgoshein, V. Kochetkov, Ch. Rothe, B. Schwenninger, B. Giacobbe, S. Shuvalov, B. Bobchenko, M. Capeans, Yu. Pavlenko, Hyun-Chul Kim, A. Arefiev, S. De Castro, A. Wurz, Yu.T. Kiryushin, Laura Fabbri, L. Seybold, A. Lanyov, F. Klefenz, B. Lomonosov, V. Eiges, M. Feuerstack-Raible, C. Jiang, A. Spiridonov, V. Rybnikov, A. Golutvin, C. Padilla, W. Ruckstuhl, F. Ratnikov, I. Tikhomirov, S. Nam, Nicola Semprini-Cesari, Mauro Villa, M. Schmelling, M. A. Pleier, K. Höpfner, A. Christensen, Y. Bagaturia, Christian Bauer, D. Peralta, V. Bassetti, R. Wurth, B. Moshous, U. Schwanke, P. Truöl, C. B. Krauss, T. Oest, S. Barsuk, Samo Korpar, M. Poli, M. Adams, N. Tesch, U. Marconi, Fouzia Saadi-Lüdemann, Antonio Zoccoli, Jian Wang, M. Chmeissani, João Carvalho, Antonio Sbrizzi, J. Lüdemann, S. Spratte, E. Sexauer, D. Ressing, F. Khasanov, Robert Harr, S. Hausmann, I. Vukotic, S. Xella-Hansen, A. Bogatyrev, M. Bruinsma, U. Husemann, M. Negodaev, Kendall Reeves, T. Glebe, S. Fourletov, V. Souvorov, J. Bastos, T. Buran, I. Kisel, M. Buchler, I. Belyaev, Maurizio Piccinini, Y. Goloubkov, A. Gorisek, Dmitry Emeliyanov, T. Perschke, I. Tsakov, S. Gradl, A. Schreiner, S. Ramachandran, S. Keller, Vasco Amaral, X. Chen, F Sciacca, Klaus Dehmelt, Mogens Dam, X. Dong, R. Pernack, S. Issever, M. Sang, A. S. Schwarz, Th. S. Bauer, J. L. Rosen, A. Bertin, K. Ehret, N.N. Karpenko, D. Broemmelsiek, P. J. Weyers, R. Loke, K. E. K. Gerndt, Yunpeng Liu, Peter Buchholz, B. Schwingenheuer, A. Pose, W. Hulsbergen, Y. Jia, Z. Zheng, Marco Bruschi, A. Holscher, T. Walter, Thomas Lohse, J. Pyrlik, F. Eisele, A. Soldatov, Marcus Hohlmann, S. Somov, M. Ispiryan, J. Flammer, M. Bargiotti, B. Fominykh, Helmut Wolters, Farid Ould-Saada, M. Ouchrif, I. Arino, Wolfgang Wagner, M. Beck, Olga Igonkina, R. Zimmermann, P. Krizan, V. Balagura, H. Deckers, M. Danilov, I. Gorbounov, G. Zech, A. Mohapatra, T. Kvaratskheliia, R. Mankel, M. Funcke, I. C. Legrand, H. Albrecht, M. Starič, D. Skrk, V. Egorytchev, A. Oliveira, A. Lange, D. Pose, M. Braeuer, Mike Medinnis, C. van Eldik, Z. Ke, H. Deppe, J. Rieling, H. D. Schultz, Vincenzo Vagnoni, M. Rietz, C. Stegmann, A. Vitale, S. Semenov, António Amorim, T. Fuljahn, A. Garcia, R. Maenner, M. Mevius, H. Fleckenstein, R. Chistov, D. Samtleben, I. Belotelov, H. Kapitza, H. Thurn, Valery Pugatch, M. S. Atiya, S. Masciocchi, Z. Zhu, Geometry, (Astro)-Particles Physics, Mathematical Analysis, and Business Web and Media
Subjects: Physics, Nuclear and High Energy Physics, Particle physics, 010308 nuclear & particles physics, 01 natural sciences, 7. Clean energy, High Energy Physics - Experiment, Nuclear physics, 0103 physical sciences, Radiative transfer, High Energy Physics::Experiment, 010306 general physics, Nuclear Experiment, HERA-B
Abstract: Using data collected by the HERA-B experiment, we have measured the fraction of J\psi's produced via radiative chi_c decays in interactions of 920 GeV protons with carbon and titanium targets. We obtained R_{\chi_c} = 0.32 \pm 0.06_{stat} \pm 0.04_{sys} for the fraction of J\psi from chi_c decays averaged over proton-carbon and proton-titanium collisions. This result is in agreement with previous measurements and is compared with theoretical predictions., Comment: 16 pages, 5 figs
Published: 2003

35. Measurement of the $b\overline{b}$ production cross section in 920 GeV fixed-target proton-nucleus collisions

Author: R. Spighi, Dmitry Emeliyanov, H. Fleckenstein, Jian Wang, R. van Staa, S. Hausmann, Y. Pylypchenko, T. Glebe, Antonio Zoccoli, R. Chistov, D. Samtleben, I. Siccama, Imma Riu, C. B. Krauss, B. Bobchenko, A. Hoscher, T. Zeuner, I. C. Legrand, W. Hulsbergen, Y. Jia, Z. Zheng, J. Flammer, R. Baghshetsyan, A. Bogatyrev, D. Broemmelsiek, Olga Igonkina, K. E. K. Gerndt, D. Skrk, Y. Vassiliev, M. Hildebrandt, V. Balagura, J. Bastos, G. Zech, A. Mohapatra, A. Belkov, Valery Pugatch, M. Bräuer, G.J. Wagner, H. Kapitza, M. A. Pleier, S. Gradl, A. Schreiner, Maurizio Piccinini, H. Thurn, Sebastian Nowak, V. Rusinov, Th. S. Bauer, B. X. Chen, R. Mizuk, V. Souvorov, T. Buran, D. Wegener, W. Gradl, S. Essenov, L. Seybold, Søren Schmidt, K. Riechmann, R. Pernack, S. Issever, S. Karabekyan, J. Rosen, Z. Ke, B. Lomonosov, J. Rieling, V. Eiges, H. Albrecht, Vincenzo Vagnoni, P. J. Weyers, R. Loke, S. Somov, M. Ouchrif, H. Wahlberg, M. Böcker, A. Pose, I. Belyaev, A. Lange, K. M. Danielsen, Jenny Ivarsson, M. Capponi, M. Atiya, V. Amaral, I. Massa, A. Abyzov, T. Oest, G. Medin, D. Galli, F. Eisele, Hyun-Chul Kim, Samim Erhan, T. Zivko, U. Marconi, S. Masciocchi, D. Pose, M. Symalla, S. J. Aplin, F. Sanchez, C. van Eldik, Marco Bruschi, H. Sun, A. Michetti, Paul Edmund Karchin, H. Deppe, A. Kaoukher, W. Ruckstuhl, D. Peralta, Z. Zhu, B. Moshous, Peter Robmann, S. De Castro, I. Vukotic, V. Egorytchev, A. Oliveira, M. Rietz, A. Arefiev, P. Kreuzer, J. Shiu, S. Xella-Hansen, David Gascon, U. Schwanke, Ramon Miquel, C. Rothe, H. D. Schultz, H. B. Dreis, K. Berkhan, T. Hott, Peter E. Schlein, J. Luidemann, Y. Wang, C. Stegmann, A. Vitale, Andrej Gorišek, A. Bertin, M. Walter, S. Semenov, C. Borgmeier, M. Poli, Helmut Wolters, Farid Ould-Saada, T. Fuljahn, L. Garrido, F. Ratnikov, I. Tikhomirov, C. Jiang, O. Barsukova, A. Spiridonov, A. Stanovnik, O. Gouchtchine, S. Shuvalov, F. Klefenz, Ulrich Werthenbach, D. Ryzhikov, Wolfgang Wagner, A. Christensen, Mike Medinnis, O. Steinkamp, S. Steinbeck, J. Glass, R. F. Schwitters, R. Pestotnik, M. T. N. P. de Vera, Robert Harr, V. Saveliev, G. Bohm, M. Spahn, Hermann Kolanoski, B. Schwingenheuer, Nicola Semprini-Cesari, M. Schmelling, Pietro Faccioli, V. Aushev, Y. Guilitsky, B. Dolgoshein, M. Capeans, J. Yang, R. Wanke, F. Sun, M. Mevius, Christian Bauer, Laura Fabbri, F. Saadi-Ludemannm, Thomas Hamacher, Antonio Sbrizzi, C. Padilla, U. Uwer, I. Belotelov, M. Nörenberg, T. Perschke, H. Schröder, A. Wurz, J. Zweizig, S. F. Takach, J. Chamanina, M. Titov, J. D. Hansen, X. Dong, B. A. A. Petersen, Mogens Dam, L. Sozuer, K. Hofner, P. Krizan, D. Goloubkov, Y. Bagaturia, I. Negri, G. Leffers, S. Barsuk, M. Beck, M. Bargiotti, B. Fominykh, S. Solunin, A. Soldatov, F Sciacca, Marcus Hohlmann, Klaus Dehmelt, W. Schmidt-Parzefall, W. Fallot-Burghardt, M. Ispiryan, D. Dujmic, I. Tsakov, L. Matchikhilian, S. Spratte, D. Ressing, R. Zimmermann, H. Itterbeck, V. Kochetkov, R. Eckmann, P. Conde, Igor Golutvin, T. Jagla, A. Garcia, N. N. Karpenko, A. Amorim, A. Moshkin, T. Walter, Ulrich Husemann, I. Arino, João Carvalho, Yu. Zaitsev, D. Krucker, H. Deckers, M. Danilov, C. Cruse, R Stdenis, M. Dressel, Peter Buchholz, A. H. Walenta, I. Gorbounov, R. Mankel, Kwong Lau, A. Gellrich, M. Funcke, T. Kvaratskheliia, R. Wurth, M. Chmeissani, B. Lewende, S. Ramachandran, A. S. Schwarz, R. Manner, A. J. Schwartz, A. Golutvin, S. Nam, M. Bruinsma, P. Pakhlov, Kendall Reeves, M. Sang, K. Ehret, I. Kisel, M. Buchler, F. Khasanov, Thomas Lohse, S. Fourletov, S. Keller, I. Abt, J. Spengler, U. Trunk, A. Lanyov, A. Zhelezov, K. T. Knöpfle, Yang Liu, U. Straumann, D. Stieler, Jose M Hernandez, B. Giacobbe, M. Adams, N. Tesch, E. Sexauer, Yu.V. Mikhailov, M. Negodaev, Mikhail Zavertyaev, D. C. Goulart, M. Starič, A. Somov, Yu. Pavlenko, S. Schaller, V. Popov, Werner Hofmann, J. Pyrlik, B. Schwenninger, Mauro Villa, Samo Korpar, Yu.T. Kiryushin, M. Feuerstack-Raible, V. Rybnikov, V. Bassetti, P. Truöl, B. Schmidt, R. Muresan, C. Hast, Geometry, (Astro)-Particles Physics, Mathematical Analysis, and Business Web and Media
Subjects: Physics, Particle physics, Physics and Astronomy (miscellaneous), Proton, 010308 nuclear & particles physics, Nuclear Theory, High Energy Physics::Phenomenology, Sigma, HERA, 01 natural sciences, Bottom quark, High Energy Physics - Experiment, Nuclear physics, Cross section (physics), 0103 physical sciences, High Energy Physics::Experiment, Production (computer science), Nuclear Experiment, 010306 general physics, Engineering (miscellaneous), HERA-B, Bar (unit)
Abstract: Using the HERA-B detector, the b-bbar production cross section has been measured in 920 GeV proton collisions on carbon and titanium targets. The b-bbar production was tagged via inclusive bottom quark decays into J/psi, by exploiting the longitudinal separation of J/psi->ll decay vertices from the primary proton-nucleus interaction. Both $e^+e^-$ and $\mu^+\mu^-$ channels have been reconstructed and the combined analysis yields the cross section $\sigma(b \bar b) = 32 ^{+14}_{-12} (stat) ^{+6}_{-7} (sys) nb/nucleon$., Comment: 22 pages, 10 Postscript figures
Published: 2003

36. Kinematic distributions and nuclear effects of J/psi production in 920-GeV fixed-target proton-nucleus collisions

Author: Y. Vassiliev, A. Bogatyrev, R. Muresan, C. Stegmann, F. Sanchez, S. Karabekyan, C. B. Krauss, A. Belkov, U. Schwanke, T. Buran, Mikhail Zavertyaev, Marco Bruschi, I. Belotelov, H. Kapitza, A. Vitale, D. Reßing, Peter Robmann, Nicola Semprini-Cesari, A. Stanovnik, I. Tikhomirov, C. van Eldik, M. Ispiryan, H. S. Subramania, A. J. Schwartz, Jose M Hernandez, T. Hott, Dmitry Emeliyanov, S. Solunin, P. Conde, J.D. Hansen, Mauro Villa, B. Giacobbe, S. Gradl, I. Matchikhilian, I. Abt, S. Prystupa, M. Nörenberg, A. S. Schwarz, B. Schwenninger, Samo Korpar, Igor Golutvin, H. B. Dreis, Yu.T. Kiryushin, Vladimir Popov, Laura Silva, Maurizio Piccinini, R. Pernack, C. Jiang, Vladislav Balagura, V. Rybnikov, S. De Castro, Z. Zheng, Yu. Zaitsev, S. Shuvalov, M. zur Nedden, M. Schmelling, M. Adams, H. Deppe, F. Eisele, I. Rostovtseva, A. Schreiner, Kwong Lau, Pietro Faccioli, V. Aushev, J. Flammer, O. Barsukova, H. Schröder, Andrej Gorišek, S. Kupper, Wouter Hulsbergen, M. Negodaev, U. Uwer, C. Cruse, F. Grimaldi, M. Poli, M. Danilov, C. Bauer, I. Tsakov, P. Kreuzer, O. Igonkina, M. Symalla, K. T. Knöpfle, I. Gorbounov, B. Fominykh, M. A. Pleier, M. T. Nunez Pardo de Vera, M. Agari, Valery Pugatch, Yu.V. Mikhailov, R. Pestotnik, Thomas Lohse, Laura Fabbri, J. Groth-Jensen, M. Starič, M. Funcke, A. Somov, A. Zhelezov, C. Padilla, M. Bargiotti, Y. Guilitsky, D. C. Goulart, Werner Hofmann, S. Somov, Y. Pylypchenko, Aleksandar Aleksandrov, Sebastian Nowak, D. Wegener, D. Goloubkov, Ulrich Werthenbach, M. Bruinsma, Kendall Reeves, K. M. Danielsen, M. Ouchrif, Reinhard Männer, N.N. Karpenko, K. Ehret, H. Wahlberg, W. Gradl, J. Kessler, Antonio Sbrizzi, J. Gläß, Imma Riu, T. Jagla, X. Dong, P. Križan, A. Golutvin, B. Bobchenko, J. Spengler, I. Kisel, A. Michetti, L. Sozuer, H. Albrecht, B. Lewendel, R. Mankel, R. Wurth, D. Pose, V. Egorytchev, Maksym Titov, M. Mevius, A. Lanyov, A. Gellrich, F. Sciacca, O. Gouchtchine, G. Bohm, Hermann Kolanoski, S. Masciocchi, T. Živko, S. Essenov, S. Keller, D. Krücker, R. Mizuk, Yu. A. Golubkov, A. Bertin, Alexander Spiridonov, S. Xella-Hansen, João Carvalho, B. Schmidt, Peter Buchholz, Y. Bagaturia, S. J. Aplin, Ll. Garrido, B. Schwingenheuer, T. Kvaratskheliia, I. Massa, J. Pyrlik, A. Wurz, Marcus Hohlmann, U. Husemann, R. Zimmermann, J. Batista, J. J. Wang, M. Bräuer, M. Walter, António Amorim, D. Peralta, I. Vukotic, F. Khasanov, H. Rick, R. Spighi, T. Zeuner, E. B. Klinkby, G. Medin, J. Bastos, M. Feuerstack-Raible, Mogens Dam, B. Aa. Petersen, B. Lomonosov, M. Medinnis, Helmut Wolters, A. H. Walenta, Farid Ould-Saada, Antonio Zoccoli, Vasco Amaral, Th. S. Bauer, M. Böcker, PRT, ESP, UKR, CHN, DEU, NOR, USA, FRA, SVN, CHE, DNK, RUS, NLD, DIP. DI FISICA, DIPARTIMENTO DI FISICA E ASTRONOMIA 'AUGUSTO RIGHI', Facolta' di INGEGNERIA, SECONDA FACOLTA' DI INGEGNERIA DELL'UNIVERSITA' DI BOLOGNA CON SEDE CESENA, I. ABT, M. ADAMS, M. AGARI, H. ALBRECHT, A. ALEKSANDROV, V. AMARAL, A. AMORIM, S.J. APLIN, V. AUSHEV, Y. BAGATURIA, V. BALAGURA, M. BARGIOTTI, O. BARSUKOVA, J. BASTOS, J. BATISTA, C. BAUER, TH.S. BAUER, A. BELKOV, AR. BELKOV, I. BELOTELOV, A. BERTIN, B. BOBCHENKO, M. BOCKER, A. BOGATYREV, G. BOHM, M. BRAUER, M. BRUINSMA, M. BRUSCHI, P. BUCHHOLZ, T. BURAN, J. CARVALHO, P. CONDE, C. CRUSE, M. DAM, K.M. DANIELSEN, M. DANILOV, S. DE CASTRO, H. DEPPE, X. DONG, H.B. DREIS, V. EGORYTCHEV, K. EHRET, F. EISELE, D. EMELIYANOV, S. ERHAN, S. ESSENOV, L. FABBRI, P. FACCIOLI, M. FEUERSTACK-RAIBLE, J. FLAMMER, B. FOMINYKH, M. FUNCKE, LL. GARRIDO, A. GELLRICH, B. GIACOBBE, J. GLA, D. GOLOUBKOV, Y. GOLUBKOV, A. GOLUTVIN, I. GOLUTVIN, I. GORBOUNOV, A. GORISEK, O. GOUCHTCHINE, D.C. GOULART, S. GRADL, W. GRADL, F. GRIMALDI, YU. GUILITSKY, J.D. HANSEN, J.M. HERNANDEZ, W. HOFMANN, M. HOHLMANN, T. HOTT, W. HULSBERGEN, U. HUSEMANN, O. IGONKINA, M. ISPIRYAN, T. JAGLA, C. JIANG, H. KAPITZA, S. KARABEKYAN, N. KARPENKO, S. KELLER, J. KESSLER, F. KHASANOV, YU. KIRYUSHIN, I. KISEL, E. KLINKBY, K.T. KNOPFLE, H. KOLANOSKI, S. KORPAR, C. KRAUSS, P. KREUZER, P. KRIZAN, D. KRUCKER, S. KUPPER, T. KVARATSKHELIIA, A. LANYOV, K. LAU, B. LEWENDEL, T. LOHSE, B. LOMONOSOV, R. MANNER, R. MANKEL, S. MASCIOCCHI, I. MASSA, I. MATCHIKHILIAN, G. MEDIN, M. MEDINNIS, M. MEVIUS, A. MICHETTI, YU. MIKHAILOV, R. MIZUK, R. MURESAN, M.ZUR NEDDEN, M. NEGODAEV, M. NORENBERG, S. NOWAK, M.T. NUNEZ PARDO DE VERA, M. OUCHRIF, F. OULD-SAADA, C. PADILLA, D. PERALTA, R. PERNACK, R. PESTOTNIK, B.A. PETERSEN, M. PICCININI, M.A. PLEIER, M. POLI, V. POPOV, D. POSE, S. PRYSTUPA, V.M. PUGATCH, Y. PYLYPCHENKO, J. PYRLIK, K. REEVES, D. REING, H. RICK, I. RIU, P. ROBMANN, I. ROSTOVTSEVA, V. RYBNIKOV, F. SANCHEZ, A. SBRIZZI, M. SCHMELLING, B. SCHMIDT, A. SCHREINER, H. SCHRODER, U. SCHWANKE, ALAN J. SCHWARTZ, ANDREAS S. SCHWARZ, B. SCHWENNINGER, B. SCHWINGENHEUER, F. SCIACCA, N. SEMPRINI-CESARI, S. SHUVALOV, L. SILVA, L. SOZUER, S. SOLUNIN, A. SOMOV, S. SOMOV, J. SPENGLER, R. SPIGHI, A. SPIRIDONOV, A. STANOVNIK, M. STARI&#711, C, C. STEGMANN, H. S. SUBRAMANIA, M. SYMALLA, I. TIKHOMIROV, M. TITOV, I. TSAKOV, U. UWER, C. VAN ELDIK, YU. VASSILIEV, M. VILLA, A. VITALE, I. VUKOTIC, H. WAHLBERG, A. H. WALENTA,M. WALTER, J. J. WANG, D. WEGENER, U. WERTHENBACH, H. WOLTERS, R. WURTH, A. WURZ, S. XELLA-HANSEN, YU. ZAITSEV, M. ZAVERTYAEV, T. ZEUNER, A. ZHELEZOV, Z. ZHENG, R. ZIMMERMANN, T. &#711, and ZIVKO, A. ZOCCOLI
Subjects: Physics, Particle physics, Meson, Proton, Physics and Astronomy (miscellaneous), 010308 nuclear & particles physics, DESY, HERA, 01 natural sciences, F region, High Energy Physics - Experiment, Nuclear physics, symbols.namesake, 0103 physical sciences, symbols, Feynman diagram, Production (computer science), High Energy Physics::Experiment, ddc:530, 010306 general physics, Nuclear Experiment, Engineering (miscellaneous), HERA-B
Abstract: Measurements of the kinematic distributions of $J/\psi$ mesons produced in $p-$C, $p-$Ti and $p-$W collisions at $\sqrt{s}=41.6 \mathrm{GeV}$ in the Feynman-$x$ region $-0.34 < x_{F} < 0.14$ and for transverse momentum up to $p_T = 5.4 \mathrm{GeV}/c$ are presented. The $x_F$ and $p_T$ dependencies of the nuclear suppression parameter, $\alpha$, are also given. The results are based on $2.4 \cdot 10^{5}$ $J/\psi$ mesons in both the $e^+ e^-$ and $\mu^{+}\mu^{-}$ decay channels. The data have been collected by the HERA-B experiment at the HERA proton ring of the DESY laboratory. The measurement explores the negative region of $x_{F}$ for the first time. The average value of $\alpha$ in the measured $x_{F}$ region is $0.981 \pm 0.015$. The data suggest that the strong nuclear suppression of $J/\psi$ production previously observed at high $x_F$ turns into an enhancement at negative $x_F$., Comment: 19 pages, 11 figures, 6 tables
Published: 2009

37. V0 production in p+A collisions at s**(1/2) = 41.6-GeV

Author: I. ABT, M. ADAMS, M. AGARI, H. ALBRECHT, A. ALEKSANDROV, V. AMARAL, A. AMORIM, S. J. APLIN, V. AUSHEV, Y. BAGATURIA, V. BALAGURA, M. BARGIOTTI, O. BARSUKOVA, J. BASTOS, J. BATISTA, C. BAUER, T.H. S. BAUER, A. BELKOV, A.R. BELKOV, I. BELOTELOV, B. BOBCHENKO, M. BOCKER, A. BOGATYREV, G. BOHM, M. BRAUER, M. BRUINSMA, M. BRUSCHI, P. BUCHHOLZ, T. BURAN, J. CARVALHO, P. CONDE, C. CRUSE, M. DAM, K. M. DANIELSEN, M. DANILOV, H. DEPPE, X. DONG, H. B. DREIS, V. EGORYTCHEV, K. EHRET, F. EISELE, D. EMELIYANOV, S. ERHAN, S. ESSENOV, P. FACCIOLI, M. FEUERSTACK RAIBLE, J. FLAMMER, B. FOMINYKH, M. FUNCKE, L.L. GARRIDO, A. GELLRICH, B. GIACOBBE, J. GLA, D. GOLOUBKOV, Y. GOLUBKOV, A. GOLUTVIN, I. GOLUTVIN, I. GORBOUNOV, A. GORISEK, O. GOUCHTCHINE, D. C. GOULART, S. GRADL, W. GRADL, F. GRIMALDI, Y.U. GUILITSKY, J. D. HANSEN, J. M. HERNANDEZ, W. HOFMANN, M. HOHLMANN, T. HOTT, W. HULSBERGEN, U. HUSEMANN, O. IGONKINA, M. ISPIRYAN, T. JAGLA, C. JIANG, H. KAPITZA, S. KARABEKYAN, N. KARPENKO, S. KELLER, J. KESSLER, F. KHASANOV, Y.U. KIRYUSHIN, I. KISEL, E. KLINKBY, K. T. KNOPFLE, H. KOLANOSKI, S. KORPAR, C. KRAUSS, P. KREUZER, P. KRIZAN, D. KRUCKER, S. KUPPER, T. KVARATSKHELIIA, A. LANYOV, K. LAU, B. LEWENDEL, T. LOHSE, B. LOMONOSOV, R. MANNER, R. MANKEL, S. MASCIOCCHI, I. MATCHIKHILIAN, G. MEDIN, M. MEDINNIS, M. MEVIUS, A. MICHETTI, Y.U. MIKHAILOV, R. MIZUK, R. MURESAN, M. ZUR NEDDEN, M. NEGODAEV, M. NORENBERG, S. NOWAK, M. T. NUNEZ PARDO DE VERA, M. OUCHRIF, F. OULD SAADA, C. PADILLA, D. PERALTA, R. PERNACK, R. PESTOTNIK, B. A. PETERSEN, M. A. PLEIER, M. POLI, V. POPOV, D. POSE, S. PRYSTUPA, V. M. PUGATCH, Y. PYLYPCHENKO, J. PYRLIK, K. REEVES, D. REING, H. RICK, I. RIU, P. ROBMANN, I. ROSTOVTSEVA, V. RYBNIKOV, F. SANCHEZ, M. SCHMELLING, B. SCHMIDT, A. SCHREINER, H. SCHRODER, U. SCHWANKE, ALAN J. SCHWARTZ, ANDREAS S. SCHWARZ, B. SCHWENNINGER, B. SCHWINGENHEUER, F. SCIACCA, S. SHUVALOV, L. SILVA, L. SOZUER, S. SOLUNIN, A. SOMOV, S. SOMOV, J. SPENGLER, R. SPIGHI, A. SPIRIDONOV, A. STANOVNIK, M. STARI, 711, C, C. STEGMANN, H. S. SUBRAMANIA, M. SYMALLA, I. TIKHOMIROV, M. TITOV, I. TSAKOV, U. UWER, C. VAN ELDIK, Y.U. VASSILIEV, I. VUKOTIC, H. WAHLBERG, A. H. WALENTA, M. WALTER, J. J. WANG, D. WEGENER, U. WERTHENBACH, H. WOLTERS, R. WURTH, A. WURZ, S. XELLA HANSEN, Y.U. ZAITSEV, M. ZAVERTYAEV, T. ZEUNER, A. ZHELEZOV, Z. ZHENG, R. ZIMMERMANN, T. , #711, BERTIN, ANTONIO, DE CASTRO, STEFANO, FABBRI, LAURA, MASSA, IGNAZIO GIACOMO, PICCININI, MAURIZIO, SBRIZZI, ANTONIO, SEMPRINI CESARI, NICOLA, VILLA, MAURO, VITALE, ANTONIO, ZOCCOLI, ANTONIO, I. ABT, M. ADAMS, M. AGARI, H. ALBRECHT, A. ALEKSANDROV, V. AMARAL, A. AMORIM, S.J. APLIN, V. AUSHEV, Y. BAGATURIA, V. BALAGURA, M. BARGIOTTI, O. BARSUKOVA, J. BASTOS, J. BATISTA, C. BAUER, TH.S. BAUER, A. BELKOV, AR. BELKOV, I. BELOTELOV, A. BERTIN, B. BOBCHENKO, M. BOCKER, A. BOGATYREV, G. BOHM, M. BRAUER, M. BRUINSMA, M. BRUSCHI, P. BUCHHOLZ, T. BURAN, J. CARVALHO, P. CONDE, C. CRUSE, M. DAM, K.M. DANIELSEN, M. DANILOV, S. DE CASTRO, H. DEPPE, X. DONG, H.B. DREIS, V. EGORYTCHEV, K. EHRET, F. EISELE, D. EMELIYANOV, S. ERHAN, S. ESSENOV, L. FABBRI, P. FACCIOLI, M. FEUERSTACK-RAIBLE, J. FLAMMER, B. FOMINYKH, M. FUNCKE, LL. GARRIDO, A. GELLRICH, B. GIACOBBE, J. GLA, D. GOLOUBKOV, Y. GOLUBKOV, A. GOLUTVIN, I. GOLUTVIN, I. GORBOUNOV, A. GORISEK, O. GOUCHTCHINE, D.C. GOULART, S. GRADL, W. GRADL, F. GRIMALDI, YU. GUILITSKY, J.D. HANSEN, J.M. HERNANDEZ, W. HOFMANN, M. HOHLMANN, T. HOTT, W. HULSBERGEN, U. HUSEMANN, O. IGONKINA, M. ISPIRYAN, T. JAGLA, C. JIANG, H. KAPITZA, S. KARABEKYAN, N. KARPENKO, S. KELLER, J. KESSLER, F. KHASANOV, YU. KIRYUSHIN, I. KISEL, E. KLINKBY, K.T. KNOPFLE, H. KOLANOSKI, S. KORPAR, C. KRAUSS, P. KREUZER, P. KRIZAN, D. KRUCKER, S. KUPPER, T. KVARATSKHELIIA, A. LANYOV, K. LAU, B. LEWENDEL, T. LOHSE, B. LOMONOSOV, R. MANNER, R. MANKEL, S. MASCIOCCHI, I. MASSA, I. MATCHIKHILIAN, G. MEDIN, M. MEDINNIS, M. MEVIUS, A. MICHETTI, YU. MIKHAILOV, R. MIZUK, R. MURESAN, M.ZUR NEDDEN, M. NEGODAEV, M. NORENBERG, S. NOWAK, M.T. NUNEZ PARDO DE VERA, M. OUCHRIF, F. OULD-SAADA, C. PADILLA, D. PERALTA, R. PERNACK, R. PESTOTNIK, B.A. PETERSEN, M. PICCININI, M.A. PLEIER, M. POLI, V. POPOV, D. POSE, S. PRYSTUPA, V.M. PUGATCH, Y. PYLYPCHENKO, J. PYRLIK, K. REEVES, D. REING, H. RICK, I. RIU, P. ROBMANN, I. ROSTOVTSEVA, V. RYBNIKOV, F. SANCHEZ, A. SBRIZZI, M. SCHMELLING, B. SCHMIDT, A. SCHREINER, H. SCHRODER, U. SCHWANKE, ALAN J. SCHWARTZ, ANDREAS S. SCHWARZ, B. SCHWENNINGER, B. SCHWINGENHEUER, F. SCIACCA, N. SEMPRINI-CESARI, S. SHUVALOV, L. SILVA, L. SOZUER, S. SOLUNIN, A. SOMOV, S. SOMOV, J. SPENGLER, R. SPIGHI, A. SPIRIDONOV, A. STANOVNIK, M. STARI&#711, C, C. STEGMANN, H. S. SUBRAMANIA, M. SYMALLA, I. TIKHOMIROV, M. TITOV, I. TSAKOV, U. UWER, C. VAN ELDIK, YU. VASSILIEV, M. VILLA, A. VITALE, I. VUKOTIC, H. WAHLBERG, A. H. WALENTA,M. WALTER, J. J. WANG, D. WEGENER, U. WERTHENBACH, H. WOLTERS, R. WURTH, A. WURZ, S. XELLA-HANSEN, YU. ZAITSEV, M. ZAVERTYAEV, T. ZEUNER, A. ZHELEZOV, Z. ZHENG, R. ZIMMERMANN, T. &#711, and ZIVKO, A. ZOCCOLI
Subjects: High Energy Physics::Experiment, Nuclear Experiment
Abstract: Inclusive doubly differential cross sections d^2sigma_{pA}/dx_Fdp_T^2 as a function of Feynman-x (x_F) and transverse momentum (p_T) for the production of K^0_s, Lambda^0 and anti-Lambda^0 in proton-nucleus interactions at 920 GeV are presented. The measurements were performed by HERA-B in the negative x_F range (-0.12
Published: 2009

38. Production of the Charmonium States $\chi_{c1}$ and $\chi_{c2}$ in Proton Nucleus Interactions at $\sqrt{s} = 41.6$GeV

Author: I. ABT, M. ADAMS, M. AGARI, H. ALBRECHT, A. ALEXANDROV, V. AMARAL, A. AMORIM, S. J. APLIN, V. AUSHEV, Y. BAGATURIA, V. BALAGURA, M. BARGIOTTI, O. BARSUKOVA, J. BASTOS, J. BATISTA, C. BAUER, T. S. BAUER, A. BELKOV, A.R. BELKOV, I. BELOTELOV, B. BOBCHENKO, M. BOECKER, A. BOGATYREV, G. BOHM, M. BRAUER, M. BRUINSMA, M. BRUSCHI, P. BUCHHOLZ, T. BURAN, J. CARVALHO, P. CONDE, C. CRUSE, M. DAM, K. M. DANIELSEN, M. DANILOV, H. DEPPE, X. DONG, H. B. DREIS, V. EGORYTCHEV, K. EHRET, F. EISELE, D. EMELIYANOV, S. ESSENOV, P. FACCIOLI, M. FEUERSTACK RAIBLE, J. FLAMMER, B. FOMINYKH, M. FUNCKE, L. GARRIDO, A. GELLRICH, B. GIACOBBE, J. GLAESS, D. GOLOUBKOV, Y. GOLUBKOV, A. GOLUTVIN, I. GOLUTVIN, I. GORBOUNOV, A. GORISEK, O. GOUCHTCHINE, D. C. GOULART, S. GRADL, W. GRADL, F. GRIMALDI, J. GROTH JENSEN, Y.U. GUILITSKY, J. D. HANSEN, J. M. HERNANDEZ, W. HOFMANN, M. HOHLMANN, T. HOTT, W. HULSBERGEN, U. HUSEMANN, O. IGONKINA, M. ISPIRYAN, T. JAGLA, C. JIANG, H. KAPITZA, S. KARABEKYAN, N. KARPENKO, S. KELLER, J. KESSLER, F. KHASANOV, Y.U. KIRYUSHIN, I. KISEL, E. KLINKBY, K. T. KNOEPFLE, H. KOLANOSKI, S. KORPAR, C. KRAUSS, P. KREUZER, P. KRIZAN, D. KRUECKER, S. KUPPER, T. KVARATSSKHELIIA, A. LANYOV, K. LAU, B. LEWENDEL, T. LOHSE, B. LOMONOSOV, R. MAENNER, R. MANKEL, S. MASCIOCCHI, I. MATCHIKHILIAN, G. MEDIN, M. MEDINNIS, M. MEVIUS, A. MICHETTI, Y.U. MIKHAILOV, R. MIZUK, R. MURESAN, M. ZUR NEDDEN, M. NEGODAEV, M. NOERENBERG, S. NOWAK, M. T. NUNEZ PARDO DE VERA, M. OUCHRIF, F. OULD SAADA, C. PADILLA, D. PERALTA, R. PERNACK, R. PESTOTNIK, B. A. PETERSEN, M. A. PLEIER, M. POLI, V. POPOV, D. POSE, S. PRYSTUPA, V. PUGATCH, Y. PYLYPCHENKO, J. PYRLIK, K. REEVES, D. RESSING, H. RICK, I. RIU, P. ROBMANN, I. ROSTOVTSEVA, V. RYBNIKOV, F. SANCHEZ, M. SCHMELLING, B. SCHMIDT, A. SCHREINER, H. SCHROEDER, U. SCHWANKE, A. J. SCHWARTZ, A. S. SCHWARZ, B. SCHWENNINGER, B. SCHWINGENHEUER, F. SCIACCA, S. SHUVALOV, L. SILVA, L. SOZUER, S. SOLUNIN, A. SOMOV, S. SOMOV, J. SPENGLER, R. SPIGHI, A. SPIRIDONOV, A. STANOVNIK, M. STARIC, C. STEGMANN, H. S. SUBRAMANIA, M. SYMALLA, I. TIKHOMIROV, M. TITOV, I. TSAKOV, U. UWER, C. VAN ELDIK, Y.U. VASSILIEV, I. VUKOTIC, H. WAHLBERG, A. H. WALENTA, M. WALTER, J. J. WANG, D. WEGENER, U. WERTHENBACH, H. WOLTERS, R. WURTH, A. WURZ, S. XELLA HANSEN, Y.U. ZAITSEV, M. ZAVERTYAEV, T. ZEUNER, A. ZHELEZOV, Z. ZHENG, R. ZIMMERMANN, T. ZIVKO, BERTIN, ANTONIO, DE CASTRO, STEFANO, FABBRI, LAURA, MASSA, IGNAZIO GIACOMO, PICCININI, MAURIZIO, SBRIZZI, ANTONIO, SEMPRINI CESARI, NICOLA, VILLA, MAURO, VITALE, ANTONIO, ZOCCOLI, ANTONIO, I. ABT, M. ADAMS, M. AGARI, H. ALBRECHT, A. ALEXANDROV, V. AMARAL, A. AMORIM, S. J. APLIN, V. AUSHEV, Y. BAGATURIA, V. BALAGURA, M. BARGIOTTI, O. BARSUKOVA, J. BASTOS, J. BATISTA, C. BAUER, T. S. BAUER, A. BELKOV, AR. BELKOV, I. BELOTELOV, A. BERTIN, B. BOBCHENKO, M. BOECKER, A. BOGATYREV, G. BOHM, M. BRAUER, M. BRUINSMA, M. BRUSCHI, P. BUCHHOLZ, T. BURAN, J. CARVALHO, P. CONDE, C. CRUSE, M. DAM, K. M. DANIELSEN, M. DANILOV, S. DE CASTRO, H. DEPPE, X. DONG, H. B. DREIS, V. EGORYTCHEV, K. EHRET, F. EISELE, D. EMELIYANOV, S. ESSENOV, L. FABBRI, P. FACCIOLI, M. FEUERSTACK-RAIBLE, J. FLAMMER, B. FOMINYKH, M. FUNCKE, L. GARRIDO, A. GELLRICH, B. GIACOBBE, J. GLAESS, D. GOLOUBKOV, Y. GOLUBKOV, A. GOLUTVIN, I. GOLUTVIN, I. GORBOUNOV, A. GORISEK, O. GOUCHTCHINE, D. C. GOULART, S. GRADL, W. GRADL, F. GRIMALDI, J. GROTH-JENSEN, YU. GUILITSKY, J. D. HANSEN, J. M. HERNANDEZ, W. HOFMANN, M. HOHLMANN, T. HOTT, W. HULSBERGEN, U. HUSEMANN, O. IGONKINA, M. ISPIRYAN, T. JAGLA, C. JIANG, H. KAPITZA, S. KARABEKYAN, N. KARPENKO, S. KELLER, J. KESSLER, F. KHASANOV, YU. KIRYUSHIN, I. KISEL, E. KLINKBY, K. T. KNOEPFLE, H. KOLANOSKI, S. KORPAR, C. KRAUSS, P. KREUZER, P. KRIZAN, D. KRUECKER, S. KUPPER, T. KVARATSSKHELIIA, A. LANYOV, K. LAU, B. LEWENDEL, T. LOHSE, B. LOMONOSOV, R. MAENNER, R. MANKEL, S. MASCIOCCHI, I. MASSA, I. MATCHIKHILIAN, G. MEDIN, M. MEDINNIS, M. MEVIUS, A. MICHETTI, YU. MIKHAILOV, R. MIZUK, R.MURESAN, M. ZUR NEDDEN, M. NEGODAEV, M. NOERENBERG, S. NOWAK, M. T. NUNEZ PARDO DE VERA, M. OUCHRIF, F. OULD-SAADA, C. PADILLA, D. PERALTA, R. PERNACK, R. PESTOTNIK, B. A. PETERSEN, M. PICCININI, M. A. PLEIER, M. POLI, V. POPOV, D. POSE, S. PRYSTUPA, V. PUGATCH, Y. PYLYPCHENKO, J. PYRLIK, K. REEVES, D. RESSING, H. RICK, I. RIU, P. ROBMANN, I. ROSTOVTSEVA, V. RYBNIKOV, F. SANCHEZ, A. SBRIZZI, M. SCHMELLING, B. SCHMIDT, A. SCHREINER, H. SCHROEDER, U. SCHWANKE, A. J. SCHWARTZ, A. S. SCHWARZ, B. SCHWENNINGER, B. SCHWINGENHEUER, F. SCIACCA, N. SEMPRINI-CESARI, S. SHUVALOV, L. SILVA, L. SOZUER, S. SOLUNIN, A. SOMOV, S. SOMOV, J. SPENGLER, R. SPIGHI, A. SPIRIDONOV, A. STANOVNIK, M. STARIC, C. STEGMANN, H. S. SUBRAMANIA, M. SYMALLA, I. TIKHOMIROV, M. TITOV, I. TSAKOV, U. UWER, C. VAN ELDIK, YU. VASSILIEV, M. VILLA, A. VITALE, I. VUKOTIC, H. WAHLBERG, A. H. WALENTA, M. WALTER, J. J. WANG, D. WEGENER, U. WERTHENBACH, H. WOLTERS, R. WURTH, A. WURZ, S. XELLA-HANSEN, YU. ZAITSEV, M. ZAVERTYAEV, T. ZEUNER, A. ZHELEZOV, Z. ZHENG, R. ZIMMERMANN, T. ZIVKO, and A. ZOCCOLI
Subjects: High Energy Physics::Experiment, ddc:530, High Energy Physics - Experiment
Abstract: A measurement of the ratio R_chic = (chic -> Jpsi + gam)/ Jpsi in pC, pTi and pW interactions at 920 GeV/c (sqrt{s}=41.6 GeV) in the Feynman-x range -0.35 < x_F(Jpsi) < 0.15 is presented. Both mu+mu- and e+e- Jpsi decay channels are observed with an overall statistics of about 15000 chic events, which is by far the largest available sample in pA collisions. The result is R_chic = 0.188+-0.013(st)(+0.024)(-0.022)(sys) averaged over the different materials, when no Jpsi and chic polarisations are considered. The chic_1 to chic_2 production ratio R_12 = R_chic1/R_chic2 is measured to be 1.02+-0.40, leading to a cross section ratio sigma(chic_1)/sigma(chic_2)=0.57+-0.23. The dependence of R_chic on the Feynman-x of the Jpsi, x_F(Jpsi), and its transverse momentum, p_T(Jpsi), is studied, as well as its dependence on the atomic number, A, of the target. For the first time, an extensive study of possible biases on R_chic and R_12 due to the dependence of acceptance on the polarization states of Jpsi and chic is performed. By varying the polarisation parameter, lambda(obs), of all produced Jpsi's by two sigma around the value measured by HERA-B, and considering the maximum variation due to the possible chic_1 and chic_2 polarisations, it is shown that R_chic could change by a factor between 1.02 and 1.21 and R_12 by a factor between 0.89 and 1.16., Comment: 19 pages, 7 figures
Published: 2008

39. Luminosity determination at HERA-B

Author: I. Matchikhilian, T. Hott, Laura Silva, P. Conde, Igor Golutvin, Yu. Zaitsev, Y. Guilitsky, K. T. Knöpfle, Y. Pylypchenko, M. Bruinsma, Kendall Reeves, Maurizio Piccinini, I. Massa, K. Ehret, R. Pernack, J. Kessler, Antonio Sbrizzi, C. Cruse, M. A. Pleier, L. Sozuer, J. Spengler, Marcus Hohlmann, T. Jagla, X. Dong, S. Solunin, Th. S. Bauer, U. Husemann, R. Zimmermann, Imma Riu, P. Križan, A. Golutvin, B. Bobchenko, A. Lanyov, M. Böcker, C. Stegmann, Antonio Zoccoli, I. Abt, Wouter Hulsbergen, F. Sciacca, I. Kisel, V. Rybnikov, Maksym Titov, A. Wurz, J. J. Wang, M. Poli, A. Vitale, N.N. Karpenko, F. Eisele, R. Muresan, S. Xella-Hansen, D. Reßing, A. J. Schwartz, A. Belkov, Jose M Hernandez, A. H. Walenta, Thomas Lohse, H. B. Dreis, Vladimir Popov, E. B. Klinkby, M. Bräuer, Valery Pugatch, A. Schreiner, M. Walter, O. Barsukova, T. Živko, B. Giacobbe, S. Essenov, S. Keller, J. Batista, M. Danilov, M. T. Nunez Pardo de Vera, M. Agari, C. Bauer, Peter Buchholz, H. Albrecht, Y. Bagaturia, S. Prystupa, A. Zhelezov, Ulrich Werthenbach, Vasco Amaral, R. Mankel, D. Goloubkov, M. zur Nedden, I. Gorbounov, Kwong Lau, R. Wurth, D. Pose, Ll. Garrido, S. De Castro, T. Kvaratskheliia, A. Bogatyrev, O. Igonkina, B. Aa. Petersen, C. B. Krauss, António Amorim, D. Peralta, U. Uwer, H. Deppe, T. Buran, I. Rostovtseva, M. Nörenberg, M. Funcke, F. Sanchez, I. Vukotic, I. Belotelov, I. Tikhomirov, Andrej Gorišek, R. Mizuk, U. Schwanke, H. Rick, B. Schwenninger, M. Starič, A. Stanovnik, A. Somov, Helmut Wolters, Yu.T. Kiryushin, H. S. Subramania, Mikhail Zavertyaev, T. Zeuner, Farid Ould-Saada, S. Masciocchi, V. Egorytchev, J. Bastos, M. Feuerstack-Raible, A. S. Schwarz, Mogens Dam, R. Pestotnik, M. Adams, A. Michetti, S. Shuvalov, Mauro Villa, M. Mevius, Samo Korpar, M. Negodaev, B. Lewendel, B. Fominykh, Yu.V. Mikhailov, B. Lomonosov, M. Medinnis, D. C. Goulart, Werner Hofmann, A. Gellrich, Nicola Semprini-Cesari, O. Gouchtchine, G. Bohm, I. Tsakov, Hermann Kolanoski, S. Kupper, R. Spighi, P. Kreuzer, M. Symalla, B. Schmidt, K. M. Danielsen, Reinhard Männer, Marco Bruschi, Dmitry Emeliyanov, M. Ispiryan, S. Gradl, S. J. Aplin, F. Khasanov, Vladislav Balagura, Y. Vassiliev, J. Pyrlik, A. Bertin, C. Jiang, Z. Zheng, Alexander Spiridonov, Laura Fabbri, J. Groth-Jensen, S. Karabekyan, G. Medin, M. Bargiotti, C. Padilla, João Carvalho, Sebastian Nowak, B. Schwingenheuer, D. Wegener, H. Kapitza, C. van Eldik, H. Wahlberg, W. Gradl, D. Krücker, Yu. A. Golubkov, J. Gläß, Pietro Faccioli, V. Aushev, F. Grimaldi, S. Somov, Aleksandar Aleksandrov, M. Ouchrif, M. Schmelling, J. Flammer, H. Schröder, Peter Robmann, J.D. Hansen, I. ABT, M. ADAMS, M. AGARI, H. ALBRECHT, A. ALEKSANDROV, V. AMARAL, A. AMORIM, S.J. APLIN, V. AUSHEV, Y. BAGATURIA, V. BALAGURA, M. BARGIOTTI, O. BARSUKOVA, J. BASTOS, J. BATISTA, C. BAUER, TH.S. BAUER, A. BELKOV, AR. BELKOV, I. BELOTELOV, A. BERTIN, B. BOBCHENKO, M. BOCKER, A. BOGATYREV, G. BOHM, M. BRAUER, M. BRUINSMA, M. BRUSCHI, P. BUCHHOLZ, T. BURAN, J. CARVALHO, P. CONDE, C. CRUSE, M. DAM, K.M. DANIELSEN, M. DANILOV, S. DE CASTRO, H. DEPPE, X. DONG, H.B. DREIS, V. EGORYTCHEV, K. EHRET, F. EISELE, D. EMELIYANOV, S. ESSENOV, L. FABBRI, P. FACCIOLI, M. FEUERSTACK-RAIBLE, J. FLAMMER, B. FOMINYKH, M. FUNCKE, LL. GARRIDO, A. GELLRICH, B. GIACOBBE, J. GLASS, D. GOLOUBKOV, Y. GOLUBKOV, A. GOLUTVIN, I. GOLUTVIN, I. GORBOUNOV, A. GORISEK, O. GOUCHTCHINE, D.C. GOULART, S. GRADL, W. GRADL, F. GRIMALDI, J. GROTH-JENSEN, YU. GUILITSKY, J.D. HANSEN, J.M. HERNANDEZ, W. HOFMANN, M. HOHLMANN, T. HOTT, W. HULSBERGEN, U. HUSEMANN, O. IGONKINA, M. ISPIRYAN, T. JAGLA, C. JIANG, H. KAPITZA, S. KARABEKYAN, N. KARPENKO, S. KELLER, J. KESSLER, F. KHASANOV, YU. KIRYUSHIN, I. KISEL, E. KLINKBY, K.T. KNOPFLE, H. KOLANOSKI, S. KORPAR, C. KRAUSS, P. KREUZER, P. KRIZAN, D. KRUCKER, S. KUPPER, T. KVARATSKHELIIA, A. LANYOV, K. LAU, B. LEWENDEL, T. LOHSE, B. LOMONOSOV, R. MANNER, R. MANKEL, S. MASCIOCCHI, I. MASSA, I. MATCHIKHILIAN, G. MEDIN, M. MEDINNIS, M. MEVIUS, A. MICHETTI, YU. MIKHAILOV, R. MIZUK, R. MURESAN, M. ZUR NEDDEN, M. NEGODAEV, M. NORENBERG, S. NOWAK, M.T. NUNEZ PARDO DE VERA, M. OUCHRIF, F. OULD-SAADA, C. PADILLA, D. PERALTA, R. PERNACK, R. PESTOTNIK, B.AA. PETERSEN, M. PICCININI, M.A. PLEIER, M. POLI, V. POPOV, D. POSE, S. PRYSTUPA, V. PUGATCH, Y. PYLYPCHENKO, J. PYRLIK, K. REEVES, D. RESSING, H. RICK, I. RIU, P. ROBMANN, I. ROSTOVTSEVA, V. RYBNIKOV, F. SANCHEZ, A. SBRIZZI, M. SCHMELLING, B. SCHMIDT, A. SCHREINER, H. SCHRODER, U. SCHWANKE, A.J. SCHWARTZ, A.S. SCHWARZ, B. SCHWENNINGER, B. SCHWINGENHEUER, F. SCIACCA, N. SEMPRINI-CESARI, S. SHUVALOV, L. SILVA, L. SOZUER, S. SOLUNIN, A. SOMOV, S. SOMOV, J. SPENGLER, R. SPIGHI, A. SPIRIDONOV, A. STANOVNIK, M. STARIC, C. STEGMANN, H.S. SUBRAMANIA, M. SYMALLA, I. TIKHOMIROV, M. TITOV, I. TSAKOV, U. UWER, C. VAN ELDIK, YU. VASSILIEV, M. VILLA, A. VITALE, I. VUKOTIC, H. WAHLBERG, A.H. WALENTA, M. WALTER, J.J. WANG, D. WEGENER, U. WERTHENBACH, H. WOLTERS, R. WURTH, A. WURZ, S. XELLA-HANSEN, YU. ZAITSEV, M. ZAVERTYAEV, T. ZEUNER, A. ZHELEZOV, Z. ZHENG, R. ZIMMERMAN, T. ZIVKO, and A. ZOCCOLI
Subjects: Physics, Nuclear and High Energy Physics, Measurement method, Luminosity (scattering theory), 010308 nuclear & particles physics, Astrophysics::High Energy Astrophysical Phenomena, HERA, 01 natural sciences, Measure (mathematics), Nuclear physics, Delta ray, Physics - Data Analysis, Statistics and Probability, 0103 physical sciences, ddc:530, High Energy Physics::Experiment, 010303 astronomy & astrophysics, Instrumentation, HERA-B
Abstract: A detailed description of an original method used to measure the luminosity accumulated by the HERA-B experiment for a data sample taken during the 2002-2003 HERA running period is reported. We show that, with this method, a total luminosity measurement can be achieved with a typical precision, including overall systematic uncertainties, at a level of 5% or better. We also report evidence for the detection of delta-rays generated in the target and comment on the possible use of such delta rays to measure luminosity., Comment: 24 pages, 5 figures
Published: 2007

40. A Measurement of the psi ' to J/psi production ratio in 920 GeV proton-nucleus interactions

Author: Pietro Faccioli, V. Aushev, F. Grimaldi, Y. Vassiliev, C. Jiang, A. Spiridonov, S. Karabekyan, C. van Eldik, M. Schmelling, M. Bargiotti, H. Schröder, Sebastian Nowak, D. Wegener, B. Aa. Petersen, H. Deppe, H. Wahlberg, W. Gradl, S. Somov, M. Ouchrif, Peter Robmann, S. Essenov, Helmut Wolters, F. Eisele, Farid Ould-Saada, M. Adams, I. Massa, N.N. Karpenko, Rok Pestotnik, O. Barsukova, Wouter Hulsbergen, R. Muresan, I. Rostovtseva, A. H. Walenta, M. Symalla, S. De Castro, S. Kupper, L. Sozuer, I. Kisel, R. Mizuk, H. Albrecht, R. Mankel, Laura Fabbri, J. Groth-Jensen, F. Khasanov, R. Wurth, D. Pose, O. Igonkina, C. Padilla, M. Negodaev, M. Poli, Y. Guilitsky, Antonio Zoccoli, T. Živko, I. Tikhomirov, A. Aleksandrov, K. Ehret, J. Kessler, Antonio Sbrizzi, B. Lomonosov, A. Michetti, Thomas Lohse, S. Keller, T. Jagla, A. Belkov, M. Medinnis, X. Dong, J. Gläß, B. Lewendel, Vasco Amaral, Valery Pugatch, Mikhail Danilov, Dmitry Emeliyanov, Maksym Titov, A. Schreiner, J.D. Hansen, M. Nörenberg, A. Wurz, A. Gellrich, A. Zhelezov, Y. Bagaturia, A. Bogatyrev, Nicola Semprini-Cesari, A. S. Schwarz, Mogens Dam, B. Fominykh, Yu.V. Mikhailov, O. Gouchtchine, E. B. Klinkby, A. J. Schwartz, Jose M Hernandez, C. B. Krauss, Z. Zheng, T. Buran, A. Gorisek, Bernhard Schmidt, K. T. Knöpfle, Laura Silva, Jian Wang, G. Bohm, D. C. Goulart, B. Giacobbe, I. Belotelov, Hermann Kolanoski, V. Popov, Werner Hofmann, B. Schwenninger, I. Tsakov, M. T. Nunez Pardo de Vera, M. Agari, Yu.T. Kiryushin, F. Sanchez, S. Prystupa, J. Spengler, H. S. Subramania, M. Feuerstack-Raible, G. Medin, Ulrich Werthenbach, I. Matchikhilian, Th. S. Bauer, S. Shuvalov, V. Rybnikov, U. Schwanke, Maurizio Piccinini, Mikhail Zavertyaev, R. Pernack, S. Solunin, D. Goloubkov, J. Bastos, A. Lanyov, M. Böcker, I. Abt, Marco Bruschi, F. Sciacca, C. Bauer, Peter Buchholz, Mauro Villa, H. B. Dreis, Samo Korpar, D. Reßing, I. Gorbounov, T. Kvaratskheliia, M. Funcke, M. Starič, A. Somov, Y. Pylypchenko, C. Stegmann, A. Vitale, Imma Riu, P. Križan, S. Masciocchi, A. Golutvin, B. Bobchenko, R. Spighi, S. J. Aplin, V. Egorytchev, B. Schwingenheuer, M. Bräuer, M. Walter, António Amorim, Marcus Hohlmann, U. Husemann, R. Zimmermann, J. Pyrlik, J. Batista, D. Peralta, João Carvalho, H. Kapitza, I. Vukotic, Yu. A. Golubkov, A. Bertin, H. Rick, P. Kreuzer, T. Zeuner, J. Flammer, K. M. Danielsen, M. Bruinsma, Kendall Reeves, M. Ispiryan, S. Gradl, Vladislav Balagura, D. Krucker, M. zur Nedden, Kwong Lau, R. Manner, U. Uwer, A. Stanovnik, M. Mevius, C. Cruse, M. A. Pleier, T. Hott, P. Conde, Igor Golutvin, Yu. Zaitsev, L. Garrido, I. ABT, M. ADAMS, M. AGARI, H. ALBRECHT, A. ALEKSANDROV, V. AMARAL, A. AMORIM, S.J. APLIN, V. AUSHEV, Y. BAGATURIA, V. BALAGURA, M. BARGIOTTI, O. BARSUKOVA, J. BASTOS, J. BATISTA, C. BAUER, TH.S. BAUER, A. BELKOV, AR. BELKOV, I. BELOTELOV, A. BERTIN, B. BOBCHENKO, M. BOCKER, A. BOGATYREV, G. BOHM, M. BRAUER, M. BRUINSMA, M. BRUSCHI, P. BUCHHOLZ, T. BURAN, J. CARVALHO, P. CONDE, C. CRUSE, M. DAM, K.M. DANIELSEN, M. DANILOV, S. DE CASTRO, H. DEPPE, X. DONG, H.B. DREIS, V. EGORYTCHEV, K. EHRET, F. EISELE, D. EMELIYANOV, S. ERHAN, S. ESSENOV, L. FABBRI, P. FACCIOLI, M. FEUERSTACK-RAIBLE, J. FLAMMER, B. FOMINYKH, M. FUNCKE, LL. GARRIDO, A. GELLRICH, B. GIACOBBE, J. GLA, D. GOLOUBKOV, Y. GOLUBKOV, A. GOLUTVIN, I. GOLUTVIN, I. GORBOUNOV, A. GORISEK, O. GOUCHTCHINE, D.C. GOULART, S. GRADL, W. GRADL, F. GRIMALDI, YU. GUILITSKY, J.D. HANSEN, J.M. HERNANDEZ, W. HOFMANN, M. HOHLMANN, T. HOTT, W. HULSBERGEN, U. HUSEMANN, O. IGONKINA, M. ISPIRYAN, T. JAGLA, C. JIANG, H. KAPITZA, S. KARABEKYAN, N. KARPENKO, S. KELLER, J. KESSLER, F. KHASANOV, YU. KIRYUSHIN, I. KISEL, E. KLINKBY, K.T. KNOPFLE, H. KOLANOSKI, S. KORPAR, C. KRAUSS, P. KREUZER, P. KRIZAN, D. KRUCKER, S. KUPPER, T. KVARATSKHELIIA, A. LANYOV, K. LAU, B. LEWENDEL, T. LOHSE, B. LOMONOSOV, R. MANNER, R. MANKEL, S. MASCIOCCHI, I. MASSA, I. MATCHIKHILIAN, G. MEDIN, M. MEDINNIS, M. MEVIUS, A. MICHETTI, YU. MIKHAILOV, R. MIZUK, R. MURESAN, M.ZUR NEDDEN, M. NEGODAEV, M. NORENBERG, S. NOWAK, M.T. NUNEZ PARDO DE VERA, M. OUCHRIF, F. OULD-SAADA, C. PADILLA, D. PERALTA, R. PERNACK, R. PESTOTNIK, B.A. PETERSEN, M. PICCININI, M.A. PLEIER, M. POLI, V. POPOV, D. POSE, S. PRYSTUPA, V.M. PUGATCH, Y. PYLYPCHENKO, J. PYRLIK, K. REEVES, D. REING, H. RICK, I. RIU, P. ROBMANN, I. ROSTOVTSEVA, V. RYBNIKOV, F. SANCHEZ, A. SBRIZZI, M. SCHMELLING, B. SCHMIDT, A. SCHREINER, H. SCHRODER, U. SCHWANKE, ALAN J. SCHWARTZ, ANDREAS S. SCHWARZ, B. SCHWENNINGER, B. SCHWINGENHEUER, F. SCIACCA, N. SEMPRINI-CESARI, S. SHUVALOV, L. SILVA, L. SOZUER, S. SOLUNIN, A. SOMOV, S. SOMOV, J. SPENGLER, R. SPIGHI, A. SPIRIDONOV, A. STANOVNIK, M. STARIC, C. STEGMANN, H.S. SUBRAMANIA, M. SYMALLA, I. TIKHOMIROV, M. TITOV, I. TSAKOV, U. UWER, C. VAN ELDIK, YU. VASSILIEV, M. VILLA, A. VITALE, I. VUKOTIC, H. WAHLBERG, A.H. WALENTA, M. WALTER, J.J. WANG, D. WEGENER, U. WERTHENBACH, H. WOLTERS, R. WURTH, A. WURZ, YU. ZAITSEV, M. ZAVERTYAEV, T. ZEUNER, A. ZHELEZOV, Z. ZHENG, R. ZIMMERMANN, T. ZIVKO, A. ZOCCOLI, Geometry, (Astro)-Particles Physics, and Mathematical Analysis
Subjects: Physics and Astronomy (miscellaneous), Nuclear Theory, Electron, 01 natural sciences, High Energy Physics - Experiment, Nuclear physics, 0103 physical sciences, medicine, SDG 7 - Affordable and Clean Energy, 010306 general physics, Nuclear Experiment, Engineering (miscellaneous), Physics, Muon, 010308 nuclear & particles physics, Branching fraction, High Energy Physics::Phenomenology, HERA, Polarization (waves), 3. Good health, medicine.anatomical_structure, High Energy Physics::Experiment, Nucleus, Storage ring, HERA-B
Abstract: Ratios of the Psi' over the J/psi production cross sections in the dilepton channel for C, Ti and W targets have been measured in 920 GeV proton-nucleus interactions with the HERA-B detector at the HERA storage ring. The Psi' and J/psi states were reconstructed in both the mu+mu- and the e+e- decay modes. The measurements covered the kinematic range -0.35 < x_F < 0.1 with transverse momentum p_T < 4.5 GeV/c. The Psi' to J/psi production ratio is almost constant in the covered x_F range and shows a slow increase with p_T. The angular dependence of the ratio has been used to measure the difference of the Psi' and J/psi polarization. All results for the muon and electron decay channels are in good agreement: their ratio, averaged over all events, is R_psi'(mu)/R_psi'(e)=1.00+-0.08+-0.04. This result constitutes a new, direct experimental constraint on the double ratio of branching fractions, (B'(mu)*B(e))/(B(mu)*B'(e)), of Psi' and J/psi in the two channels., Comment: 20 pages, 9 figures
Published: 2007

41. Polarization of Lambda and anti-Lambda in 920-GeV fixed-target proton-nucleus collisions

Author: I. ABT, M. ADAMS, M. AGARI, H. ALBRECHT, A. ALEKSANDROV, V. AMARAL, A. AMORIM, S. J. APLIN, V. AUSHEV, Y. BAGATURIA, V. BALAGURA, M. BARGIOTTI, O. BARSUKOVA, J. BASTOS, J. BATISTA, C. BAUER, T.H. S. BAUER, A. BELKOV, A.R. BELKOV, I. BELOTELOV, B. BOBCHENKO, M. BOCKER, A. BOGATYREV, G. BOHM, M. BRAUER, M. BRUINSMA, M. BRUSCHI, P. BUCHHOLZ, T. BURAN, J. CARVALHO, P. CONDE, C. CRUSE, M. DAM, K. M. DANIELSEN, M. DANILOV, H. DEPPE, X. DONG, H. B. DREIS, V. EGORYTCHEV, K. EHRET, F. EISELE, D. EMELIYANOV, S. ERHAN, S. ESSENOV, M. FEUERSTACK RAIBLE, J. FLAMMER, B. FOMINYKH, M. FUNCKE, L.L. GARRIDO, A. GELLRICH, B. GIACOBBE, J. GLA, D. GOLOUBKOV, Y. GOLUBKOV, A. GOLUTVIN, I. GOLUTVIN, I. GORBOUNOV, A. GORISEK, O. GOUCHTCHINE, D. C. GOULART, S. GRADL, W. GRADL, F. GRIMALDI, Y.U. GUILITSKY, J. D. HANSEN, J. M. HERNANDEZ, W. HOFMANN, M. HOHLMANN, T. HOTT, W. HULSBERGEN, U. HUSEMANN, O. IGONKINA, M. ISPIRYAN, T. JAGLA, C. JIANG, H. KAPITZA, S. KARABEKYAN, N. KARPENKO, S. KELLER, J. KESSLER, F. KHASANOV, Y.U. KIRYUSHIN, I. KISEL, E. KLINKBY, K. T. KNOPFLE, H. KOLANOSKI, S. KORPAR, C. KRAUSS, P. KREUZER, P. KRIZAN, D. KRUCKER, S. KUPPER, T. KVARATSKHELIIA, A. LANYOV, K. LAU, B. LEWENDEL, T. LOHSE, B. LOMONOSOV, R. MANNER, R. MANKEL, S. MASCIOCCHI, I. MATCHIKHILIAN, G. MEDIN, M. MEDINNIS, M. MEVIUS, A. MICHETTI, Y.U. MIKHAILOV, R. MIZUK, R. MURESAN, M. ZUR NEDDEN, M. NEGODAEV, M. NORENBERG, S. NOWAK, M. T. NUNEZ PARDO DE VERA, M. OUCHRIF, F. OULD SAADA, C. PADILLA, D. PERALTA, R. PERNACK, R. PESTOTNIK, B. A. PETERSEN, M. A. PLEIER, M. POLI, V. POPOV, D. POSE, S. PRYSTUPA, V. M. PUGATCH, Y. PYLYPCHENKO, J. PYRLIK, K. REEVES, D. REING, H. RICK, I. RIU, P. ROBMANN, I. ROSTOVTSEVA, V. RYBNIKOV, F. SANCHEZ, M. SCHMELLING, B. SCHMIDT, A. SCHREINER, H. SCHRODER, U. SCHWANKE, ALAN J. SCHWARTZ, ANDREAS S. SCHWARZ, B. SCHWENNINGER, B. SCHWINGENHEUER, F. SCIACCA, S. SHUVALOV, L. SILVA, L. SOZUER, S. SOLUNIN, A. SOMOV, S. SOMOV, J. SPENGLER, R. SPIGHI, A. SPIRIDONOV, A. STANOVNIK, M. STARIC, C. STEGMANN, H. S. SUBRAMANIA, M. SYMALLA, I. TIKHOMIROV, M. TITOV, I. TSAKOV, U. UWER, C. VAN ELDIK, Y.U. VASSILIEV, I. VUKOTIC, H. WAHLBERG, A. H. WALENTA, M. WALTER, J. J. WANG, D. WEGENER, U. WERTHENBACH, H. WOLTERS, R. WURTH, A. WURZ, Y.U. ZAITSEV, M. ZAVERTYAEV, T. ZEUNER, A. ZHELEZOV, Z. ZHENG, R. ZIMMERMANN, T. ZIVKO, BERTIN, ANTONIO, DE CASTRO, STEFANO, FABBRI, LAURA, FACCIOLI, PIETRO, MASSA, IGNAZIO GIACOMO, PICCININI, MAURIZIO, SBRIZZI, ANTONIO, SEMPRINI CESARI, NICOLA, VILLA, MAURO, VITALE, ANTONIO, ZOCCOLI, ANTONIO, I. ABT, M. ADAMS, M. AGARI, H. ALBRECHT, A. ALEKSANDROV, V. AMARAL, A. AMORIM, S.J. APLIN, V. AUSHEV, Y. BAGATURIA, V. BALAGURA, M. BARGIOTTI, O. BARSUKOVA, J. BASTOS, J. BATISTA, C. BAUER, TH.S. BAUER, A. BELKOV, AR. BELKOV, I. BELOTELOV, A. BERTIN, B. BOBCHENKO, M. BOCKER, A. BOGATYREV, G. BOHM, M. BRAUER, M. BRUINSMA, M. BRUSCHI, P. BUCHHOLZ, T. BURAN, J. CARVALHO, P. CONDE, C. CRUSE, M. DAM, K.M. DANIELSEN, M. DANILOV, S. DE CASTRO, H. DEPPE, X. DONG, H.B. DREIS, V. EGORYTCHEV, K. EHRET, F. EISELE, D. EMELIYANOV, S. ERHAN, S. ESSENOV, L. FABBRI, P. FACCIOLI, M. FEUERSTACK-RAIBLE, J. FLAMMER, B. FOMINYKH, M. FUNCKE, LL. GARRIDO, A. GELLRICH, B. GIACOBBE, J. GLA, D. GOLOUBKOV, Y. GOLUBKOV, A. GOLUTVIN, I. GOLUTVIN, I. GORBOUNOV, A. GORISEK, O. GOUCHTCHINE, D.C. GOULART, S. GRADL, W. GRADL, F. GRIMALDI, YU. GUILITSKY, J.D. HANSEN, J.M. HERNANDEZ, W. HOFMANN, M. HOHLMANN, T. HOTT, W. HULSBERGEN, U. HUSEMANN, O. IGONKINA, M. ISPIRYAN, T. JAGLA, C. JIANG, H. KAPITZA, S. KARABEKYAN, N. KARPENKO, S. KELLER, J. KESSLER, F. KHASANOV, YU. KIRYUSHIN, I. KISEL, E. KLINKBY, K.T. KNOPFLE, H. KOLANOSKI, S. KORPAR, C. KRAUSS, P. KREUZER, P. KRIZAN, D. KRUCKER, S. KUPPER, T. KVARATSKHELIIA, A. LANYOV, K. LAU, B. LEWENDEL, T. LOHSE, B. LOMONOSOV, R. MANNER, R. MANKEL, S. MASCIOCCHI, I. MASSA, I. MATCHIKHILIAN, G. MEDIN, M. MEDINNIS, M. MEVIUS, A. MICHETTI, YU. MIKHAILOV, R. MIZUK, R. MURESAN, M.ZUR NEDDEN, M. NEGODAEV, M. NORENBERG, S. NOWAK, M.T. NUNEZ PARDO DE VERA, M. OUCHRIF, F. OULD-SAADA, C. PADILLA, D. PERALTA, R. PERNACK, R. PESTOTNIK, B.A. PETERSEN, M. PICCININI, M.A. PLEIER, M. POLI, V. POPOV, D. POSE, S. PRYSTUPA, V.M. PUGATCH, Y. PYLYPCHENKO, J. PYRLIK, K. REEVES, D. REING, H. RICK, I. RIU, P. ROBMANN, I. ROSTOVTSEVA, V. RYBNIKOV, F. SANCHEZ, A. SBRIZZI, M. SCHMELLING, B. SCHMIDT, A. SCHREINER, H. SCHRODER, U. SCHWANKE, ALAN J. SCHWARTZ, ANDREAS S. SCHWARZ, B. SCHWENNINGER, B. SCHWINGENHEUER, F. SCIACCA, N. SEMPRINI-CESARI, S. SHUVALOV, L. SILVA, L. SOZUER, S. SOLUNIN, A. SOMOV, S. SOMOV, J. SPENGLER, R. SPIGHI, A. SPIRIDONOV, A. STANOVNIK, M. STARIC, C. STEGMANN, H.S. SUBRAMANIA, M. SYMALLA, I. TIKHOMIROV, M. TITOV, I. TSAKOV, U. UWER, C. VAN ELDIK, YU. VASSILIEV, M. VILLA, A. VITALE, I. VUKOTIC, H. WAHLBERG, A.H. WALENTA, M. WALTER, J.J. WANG, D. WEGENER, U. WERTHENBACH, H. WOLTERS, R. WURTH, A. WURZ, YU. ZAITSEV, M. ZAVERTYAEV, T. ZEUNER, A. ZHELEZOV, Z. ZHENG, R. ZIMMERMANN, T. ZIVKO, and A. ZOCCOLI
Subjects: High Energy Physics::Experiment, Nuclear Experiment
Abstract: A measurement of the polarization of Lambda and Anti-Lambda baryons produced in pC and pW collisions at sqrt(s)=41.6 GeV has been performed with the HERA-B spectrometer. The measurements cover the kinematic range of 0.6 GeV/c < p_T
Published: 2006

42. Measurement of the J/Psi Production Cross Section in 920 GeV/c Fixed-Target Proton-Nucleus Interactions

Author: I. ABT, M. ADAMS, M. AGARI, H. ALBRECHT, A. ALEKSANDROV, V. AMARAL, A. AMORIM, S. J. APLIN, V. AUSHEV, Y. BAGATURIA, V. BALAGURA, M. BARGIOTTI, O. BARSUKOVA, J. BASTOS, J. BATISTA, C. BAUER, T.H. S. BAUER, A. BELKOV, A.R. BELKOV, I. BELOTELOV, B. BOBCHENKO, M. BOCKER, A. BOGATYREV, G. BOHM, M. BRAUER, M. BRUINSMA, M. BRUSCHI, P. BUCHHOLZ, T. BURAN, J. CARVALHO, P. CONDE, C. CRUSE, M. DAM, K. M. DANIELSEN, M. DANILOV, H. DEPPE, X. DONG, H. B. DREIS, V. EGORYTCHEV, K. EHRET, F. EISELE, D. EMELIYANOV, S. ESSENOV, M. FEUERSTACK RAIBLE, J. FLAMMER, B. FOMINYKH, M. FUNCKE, L.L. GARRIDO, A. GELLRICH, B. GIACOBBE, J. GLASS, D. GOLOUBKOV, Y. GOLUBKOV, A. GOLUTVIN, I. GOLUTVIN, I. GORBOUNOV, A. GORISEK, O. GOUCHTCHINE, D. C. GOULART, S. GRADL, W. GRADL, F. GRIMALDI, Y.U. GUILITSKY, J. D. HANSEN, J. M. HERNANDEZ, W. HOFMANN, M. HOHLMANN, T. HOTT, W. HULSBERGEN, U. HUSEMANN, O. IGONKINA, M. ISPIRYAN, T. JAGLA, C. JIANG, H. KAPITZA, S. KARABEKYAN, N. KARPENKO, S. KELLER, J. KESSLER, F. KHASANOV, Y.U. KIRYUSHIN, I. KISEL, E. KLINKBY, K. T. KNOPFLE, H. KOLANOSKI, S. KORPAR, C. KRAUSS, P. KREUZER, P. KRIZAN, D. KRUCKER, S. KUPPER, T. KVARATSKHELIIA, A. LANYOV, K. LAU, B. LEWENDEL, T. LOHSE, B. LOMONOSOV, R. MANNER, R. MANKEL, S. MASCIOCCHI, I. MATCHIKHILIAN, G. MEDIN, M. MEDINNIS, M. MEVIUS, A. MICHETTI, Y.U. MIKHAILOV, R. MIZUK, R. MURESAN, M. ZUR NEDDEN, M. NEGODAEV, M. NORENBERG, S. NOWAK, M. T. NUNEZ PARDO DE VERA, M. OUCHRIF, F. OULD SAADA, C. PADILLA, D. PERALTA, R. PERNACK, R. PESTOTNIK, B. A.A. PETERSEN, M. A. PLEIER, M. POLI, V. POPOV, D. POSE, S. PRYSTUPA, V. M. PUGATCH, Y. PYLYPCHENKO, J. PYRLIK, K. REEVES, D. RESSING, H. RICK, I. RIU, P. ROBMANN, I. ROSTOVTSEVA, V. RYBNIKOV, F. SANCHEZ, M. SCHMELLING, B. SCHMIDT, A. SCHREINER, H. SCHRODER, U. SCHWANKE, ALAN J. SCHWARTZ, ANDREAS S. SCHWARZ, B. SCHWENNINGER, B. SCHWINGENHEUER, F. SCIACCA, S. SHUVALOV, L. SILVA, L. SOZUER, S. SOLUNIN, A. SOMOV, S. SOMOV, J. SPENGLER, R. SPIGHI, A. SPIRIDONOV, A. STANOVNIK, M. STARIC, C. STEGMANN, H. S. SUBRAMANIA, M. SYMALLA, I. TIKHOMIROV, M. TITOV, I. TSAKOV, U. UWER, C. VAN ELDIK, Y.U. VASSILIEV, I. VUKOTIC, H. WAHLBERG, A. H. WALENTA, M. WALTER, J. J. WANG, D. WEGENER, U. WERTHENBACH, H. WOLTERS, R. WURTH, A. WURZ, Y.U. ZAITSEV, M. ZAVERTYAEV, T. ZEUNER, A. ZHELEZOV, Z. ZHENG, R. ZIMMERMANN, T. ZIVKO, BERTIN, ANTONIO, DE CASTRO, STEFANO, FABBRI, LAURA, FACCIOLI, PIETRO, MASSA, IGNAZIO GIACOMO, PICCININI, MAURIZIO, SBRIZZI, ANTONIO, SEMPRINI CESARI, NICOLA, VILLA, MAURO, VITALE, ANTONIO, ZOCCOLI, ANTONIO, I. ABT, M. ADAMS, M. AGARI, H. ALBRECHT, A. ALEKSANDROV, V. AMARAL, A. AMORIM, S.J. APLIN, V. AUSHEV, Y. BAGATURIA, V. BALAGURA, M. BARGIOTTI, O. BARSUKOVA, J. BASTOS, J. BATISTA, C. BAUER, TH.S. BAUER, A. BELKOV, AR. BELKOV, I. BELOTELOV, A. BERTIN, B. BOBCHENKO, M. BOCKER, A. BOGATYREV, G. BOHM, M. BRAUER, M. BRUINSMA, M. BRUSCHI, P. BUCHHOLZ, T. BURAN, J. CARVALHO, P. CONDE, C. CRUSE, M. DAM, K.M. DANIELSEN, M. DANILOV, S. DE CASTRO, H. DEPPE, X. DONG, H.B. DREIS, V. EGORYTCHEV, K. EHRET, F. EISELE, D. EMELIYANOV, S. ESSENOV, L. FABBRI, P. FACCIOLI, M. FEUERSTACK-RAIBLE, J. FLAMMER, B. FOMINYKH, M. FUNCKE, LL. GARRIDO, A. GELLRICH, B. GIACOBBE, J. GLASS, D. GOLOUBKOV, Y. GOLUBKOV, A. GOLUTVIN, I. GOLUTVIN, I. GORBOUNOV, A. GORISEK, O. GOUCHTCHINE, D.C. GOULART, S. GRADL, W. GRADL, F. GRIMALDI, YU. GUILITSKY, J.D. HANSEN, J.M. HERNANDEZ, W. HOFMANN, M. HOHLMANN, T. HOTT, W. HULSBERGEN, U. HUSEMANN, O. IGONKINA, M. ISPIRYAN, T. JAGLA, C. JIANG, H. KAPITZA, S. KARABEKYAN, N. KARPENKO, S. KELLER, J. KESSLER, F. KHASANOV, YU. KIRYUSHIN, I. KISEL, E. KLINKBY, K.T. KNOPFLE, H. KOLANOSKI, S. KORPAR, C. KRAUSS, P. KREUZER, P. KRIZAN, D. KRUCKER, S. KUPPER, T. KVARATSKHELIIA, A. LANYOV, K. LAU, B. LEWENDEL, T. LOHSE, B. LOMONOSOV, R. MANNER, R. MANKEL, S. MASCIOCCHI, I. MASSA, I. MATCHIKHILIAN, G. MEDIN, M. MEDINNIS, M. MEVIUS, A. MICHETTI, YU. MIKHAILOV, R. MIZUK, R. MURESAN, M. ZUR NEDDEN, M. NEGODAEV, M. NORENBERG, S. NOWAK, M.T. NUNEZ PARDO DE VERA, M. OUCHRIF, F. OULD-SAADA, C. PADILLA, D. PERALTA, R. PERNACK, R. PESTOTNIK, B.AA. PETERSEN, M. PICCININI, M.A. PLEIER, M. POLI, V. POPOV, D. POSE, S. PRYSTUPA, V.M. PUGATCH, Y. PYLYPCHENKO, J. PYRLIK, K. REEVES, D. RESSING, H. RICK, I. RIU, P. ROBMANN, I. ROSTOVTSEVA, V. RYBNIKOV, F. SANCHEZ, A. SBRIZZI, M. SCHMELLING, B. SCHMIDT, A. SCHREINER, H. SCHRODER, U. SCHWANKE, ALAN J. SCHWARTZ, ANDREAS S. SCHWARZ, B. SCHWENNINGER, B. SCHWINGENHEUER, F. SCIACCA, N. SEMPRINI-CESARI, S. SHUVALOV, L. SILVA, L. SOZUER, S. SOLUNIN, A. SOMOV, S. SOMOV, J. SPENGLER, R. SPIGHI, A. SPIRIDONOV, A. STANOVNIK, M. STARIC, C. STEGMANN, H.S. SUBRAMANIA, M. SYMALLA, I. TIKHOMIROV, M. TITOV, I. TSAKOV, U. UWER, C. VAN ELDIK, YU. VASSILIEV, M. VILLA, A. VITALE, I. VUKOTIC, H. WAHLBERG, A.H. WALENTA, M. WALTER, J.J. WANG, D. WEGENER, U. WERTHENBACH, H. WOLTERS, R. WURTH, A. WURZ, YU. ZAITSEV, M. ZAVERTYAEV, T. ZEUNER, A. ZHELEZOV, Z. ZHENG, R. ZIMMERMANN, T. ZIVKO, and A. ZOCCOLI
Subjects: Nuclear Theory, High Energy Physics::Experiment, Nuclear Experiment
Abstract: The mid-rapidity (dsigma_(pN)/dy at y=0) and total sigma_(pN) production cross sections of J/Psi mesons are measured in proton-nucleus interactions. Data collected by the HERA-B experiment in interactions of 920 GeV/c protons with carbon, titanium and tungsten targets are used for this analysis. The J/Psi mesons are reconstructed by their decay into lepton pairs. The total production cross section obtained is sigma_(pN)(J/Psi) = 663 +- 74 +- 46 nb/nucleon. In addition, our result is compared with previous measurements.
Published: 2006

43. Improved Measurement of the b-bbar Production Cross Section in 920 GeV Fixed-Target Proton-Nucleus Collisions

Author: I. ABT, M. ADAMS, M. AGARI, H. ALBRECHT, A. ALEKSANDROV, V. AMARAL, A. AMORIM, S. J. APLIN, V. AUSHEV, Y. BAGATURIA, V. BALAGURA, M. BARGIOTTI, O. BARSUKOVA, J. BASTOS, J. BATISTA, C. BAUER, T.H. S. BAUER, A. BELKOV, A.R. BELKOV, I. BELOTELOV, B. BOBCHENKO, M. BOCKER, A. BOGATYREV, G. BOHM, M. BRAUER, M. BRUINSMA, M. BRUSCHI, P. BUCHHOLZ, T. BURAN, J. CARVALHO, P. CONDE, C. CRUSE, M. DAM, K. M. DANIELSEN, M. DANILOV, H. DEPPE, X. DONG, H. B. DREIS, V. EGORYTCHEV, K. EHRET, F. EISELE, D. EMELIYANOV, S. ESSENOV, M. FEUERSTACK RAIBLE, J. FLAMMER, B. FOMINYKH, M. FUNCKE, L.L. GARRIDO, A. GELLRICH, B. GIACOBBE, J. GLASS, D. GOLOUBKOV, Y. GOLUBKOV, A. GOLUTVIN, I. GOLUTVIN, I. GORBOUNOV, A. GORISEK, O. GOUCHTCHINE, D. C. GOULART, S. GRADL, W. GRADL, F. GRIMALDI, Y.U. GUILITSKY, J. D. HANSEN, J. M. HERNANDEZ, W. HOFMANN, M. HOHLMANN, T. HOTT, W. HULSBERGEN, U. HUSEMANN, O. IGONKINA, M. ISPIRYAN, T. JAGLA, C. JIANG, H. KAPITZA, S. KARABEKYAN, N. KARPENKO, S. KELLER, J. KESSLER, F. KHASANOV, Y.U. KIRYUSHIN, I. KISEL, E. KLINKBY, K. T. KNOPFLE, H. KOLANOSKI, S. KORPAR, C. KRAUSS, P. KREUZER, P. KRIZAN, D. KRUCKER, S. KUPPER, T. KVARATSKHELIIA, A. LANYOV, K. LAU, B. LEWENDEL, T. LOHSE, B. LOMONOSOV, R. MANNER, R. MANKEL, S. MASCIOCCHI, I. MATCHIKHILIAN, G. MEDIN, M. MEDINNIS, M. MEVIUS, A. MICHETTI, Y.U. MIKHAILOV, R. MIZUK, R. MURESAN, M. ZUR NEDDEN, M. NEGODAEV, M. NORENBERG, S. NOWAK, M. T. NUNEZ PARDO DE VERA, M. OUCHRIF, F. OULD SAADA, C. PADILLA, D. PERALTA, R. PERNACK, R. PESTOTNIK, B. A.A. PETERSEN, M. A. PLEIER, M. POLI, V. POPOV, D. POSE, S. PRYSTUPA, V. M. PUGATCH, Y. PYLYPCHENKO, J. PYRLIK, K. REEVES, D. REING, H. RICK, I. RIU, P. ROBMANN, I. ROSTOVTSEVA, V. RYBNIKOV, F. SANCHEZ, M. SCHMELLING, B. SCHMIDT, A. SCHREINER, H. SCHRODER, U. SCHWANKE, ALAN J. SCHWARTZ, ANDREAS S. SCHWARZ, B. SCHWENNINGER, B. SCHWINGENHEUER, F. SCIACCA, S. SHUVALOV, L. SILVA, L. SOZUER, S. SOLUNIN, A. SOMOV, S. SOMOV, J. SPENGLER, R. SPIGHI, A. SPIRIDONOV, A. STANOVNIK, M. STARIC, C. STEGMANN, H. S. SUBRAMANIA, M. SYMALLA, I. TIKHOMIROV, M. TITOV, I. TSAKOV, U. UWER, C. VAN ELDIK, Y.U. VASSILIEV, I. VUKOTIC, H. WAHLBERG, A. H. WALENTA, M. WALTER, J. J. WANG, D. WEGENER, U. WERTHENBACH, H. WOLTERS, R. WURTH, A. WURZ, Y.U. ZAITSEV, M. ZAVERTYAEV, T. ZEUNER, A. ZHELEZOV, Z. ZHENG, R. ZIMMERMANN, T. ZIVKO, BERTIN, ANTONIO, DE CASTRO, STEFANO, FABBRI, LAURA, FACCIOLI, PIETRO, GIOVANNINI, PAOLA, MASSA, IGNAZIO GIACOMO, PICCININI, MAURIZIO, SBRIZZI, ANTONIO, SEMPRINI CESARI, NICOLA, VILLA, MAURO, VITALE, ANTONIO, ZOCCOLI, ANTONIO, I. ABT, M. ADAMS, M. AGARI, H. ALBRECHT, A. ALEKSANDROV, V. AMARAL, A. AMORIM, S.J. APLIN, V. AUSHEV, Y. BAGATURIA, V. BALAGURA, M. BARGIOTTI, O. BARSUKOVA, J. BASTOS, J. BATISTA, C. BAUER, TH.S. BAUER, A. BELKOV, AR. BELKOV, I. BELOTELOV, A. BERTIN, B. BOBCHENKO, M. BOCKER, A. BOGATYREV, G. BOHM, M. BRAUER, M. BRUINSMA, M. BRUSCHI, P. BUCHHOLZ, T. BURAN, J. CARVALHO, P. CONDE, C. CRUSE, M. DAM, K.M. DANIELSEN, M. DANILOV, S. DE CASTRO, H. DEPPE, X. DONG, H.B. DREIS, V. EGORYTCHEV, K. EHRET, F. EISELE, D. EMELIYANOV, S. ESSENOV, L. FABBRI, P. FACCIOLI, M. FEUERSTACK-RAIBLE, J. FLAMMER, B. FOMINYKH, M. FUNCKE, LL. GARRIDO, A. GELLRICH, B. GIACOBBE, P. GIOVANNINI, J. GLASS, D. GOLOUBKOV, Y. GOLUBKOV, A. GOLUTVIN, I. GOLUTVIN, I. GORBOUNOV, A. GORISEK, O. GOUCHTCHINE, D.C. GOULART, S. GRADL, W. GRADL, F. GRIMALDI, YU. GUILITSKY, J.D. HANSEN, J.M. HERNANDEZ, W. HOFMANN, M. HOHLMANN, T. HOTT, W. HULSBERGEN, U. HUSEMANN, O. IGONKINA, M. ISPIRYAN, T. JAGLA, C. JIANG, H. KAPITZA, S. KARABEKYAN, N. KARPENKO, S. KELLER, J. KESSLER, F. KHASANOV, YU. KIRYUSHIN, I. KISEL, E. KLINKBY, K.T. KNOPFLE, H. KOLANOSKI, S. KORPAR, C. KRAUSS, P. KREUZER, P. KRIZAN, D. KRUCKER, S. KUPPER, T. KVARATSKHELIIA, A. LANYOV, K. LAU, B. LEWENDEL, T. LOHSE, B. LOMONOSOV, R. MANNER, R. MANKEL, S. MASCIOCCHI, I. MASSA, I. MATCHIKHILIAN, G. MEDIN, M. MEDINNIS, M. MEVIUS, A. MICHETTI, YU. MIKHAILOV, R. MIZUK, R. MURESAN, M.ZUR NEDDEN, M. NEGODAEV, M. NORENBERG, S. NOWAK, M.T. NUNEZ PARDO DE VERA, M. OUCHRIF, F. OULD-SAADA, C. PADILLA, D. PERALTA, R. PERNACK, R. PESTOTNIK, B.AA. PETERSEN, M. PICCININI, M.A. PLEIER, M. POLI, V. POPOV, D. POSE, S. PRYSTUPA, V.M. PUGATCH, Y. PYLYPCHENKO, J. PYRLIK, K. REEVES, D. REING, H. RICK, I. RIU, P. ROBMANN, I. ROSTOVTSEVA, V. RYBNIKOV, F. SANCHEZ, A. SBRIZZI, M. SCHMELLING, B. SCHMIDT, A. SCHREINER, H. SCHRODER, U. SCHWANKE, ALAN J. SCHWARTZ, ANDREAS S. SCHWARZ, B. SCHWENNINGER, B. SCHWINGENHEUER, F. SCIACCA, N. SEMPRINI-CESARI, S. SHUVALOV, L. SILVA, L. SOZUER, S. SOLUNIN, A. SOMOV, S. SOMOV, J. SPENGLER, R. SPIGHI, A. SPIRIDONOV, A. STANOVNIK, M. STARIC, C. STEGMANN, H.S. SUBRAMANIA, M. SYMALLA, I. TIKHOMIROV, M. TITOV, I. TSAKOV, U. UWER, C. VAN ELDIK, YU. VASSILIEV, M. VILLA, A. VITALE, I. VUKOTIC, H. WAHLBERG, A.H. WALENTA, M. WALTER, J.J. WANG, D. WEGENER, U. WERTHENBACH, H. WOLTERS, R. WURTH, A. WURZ, YU. ZAITSEV, M. ZAVERTYAEV, T. ZEUNER, A. ZHELEZOV, Z. ZHENG, R. ZIMMERMANN, T. ZIVKO, and A. ZOCCOLI
Subjects: High Energy Physics::Experiment, Nuclear Experiment
Abstract: A new measurement of the b-bbar production cross section in 920 GeV proton-nucleus collisions is presented by the HERA-B collaboration. The b-bbar production is tagged via inclusive bottom quark decays into J/psi mesons, by exploiting the longitudinal separation of J/psi->ll decay vertices from the primary proton-nucleus interaction point. Both e+e- and mu+mu- channels are reconstructed, for a total of 83 +- 12 inclusive b->J/psi X events found. The combined analysis yields a b-bbar to prompt J/psi cross section ratio of {frac{{Deltasigma(bbbar)}}{{Deltasigma_{jpsi}}}} = 0.032pm 0.005 stat pm 0.004 sys measured in the x_f acceptance (-0.35
Published: 2006

44. HERA-G, A NEW EXPERIMENT FOR GLUEBALL, HYBRID AND ODDERON STUDIES AT DESY. PROPOSAL FOR A NEW EXPERIMENTAL PROGRAM USING THE EXISTING HERA-B DETECTOR

Author: T. Lohse, M. zur Nedden, M. Bruschi, M. Capponi, B. Giacobbe, U. Marconi, M. Poli, R. Spighi, S. Vecchi, A. Bianconi, M. Corradini, A. Donzella, E. Lodi Rizzini, L. Venturelli, N. Zurlo, Y.u. Kiryushin, A. Lanyov, D. Pose, S. Reznikov, S. Somov, G. Evgrafov, I. Belotelov, M. A. Reyes, J. Felix, M. Medinnis, M. Brauer, J. Spengler, V. Pugatch, Y.u. Vasilev, V. Aushev, S. Prystupa, Y.u. Pavlenko, V. Kyva, M. Molodyko, J. D. Hansen, R. Muresan, M. Staric, R. Pestotnik, A. Stanovnik, S. Erhan, P. Schlein, G. Medin, V. A. Bogatyrev, V. Balagura, M. Danilov, F. Khasanov, B. Fominykh, R. Mizuk, I. Matchikhilian, I. Rostovtseva, V. Popov, S. Esenov, S. Shuvalov, I. Tikhomirov, Y.u. Zaitsev, S. Aplin, V. Galkin, A. Golovin, D. Ryzhikov, V. Savelev, M. Zaboudko, Y. Arestov, B. Chuiko, D. Konstantinov, V. Lishin, V. Shelikhov, L. Ferrero, R. Garfagnini, G. Piragino, BARGIOTTI, MARIANNE, BERTIN, ANTONIO, CARBONE, ANGELO, DE CASTRO, STEFANO, FABBRI, LAURA, FACCIOLI, PIETRO, GALLI, DOMENICO, MASSA, IGNAZIO GIACOMO, PICCININI, MAURIZIO, SEMPRINI CESARI, NICOLA, VILLA, MAURO, VITALE, ANTONIO, ZOCCOLI, ANTONIO, T. Lohse, M. zur Nedden, M. Bargiotti, A. Bertin, M. Bruschi, M. Capponi, A. Carbone, S. De Castro, L. Fabbri, P. Faccioli, D. Galli, B. Giacobbe, U. Marconi, I. Massa, M. Piccinini, M. Poli, N. Semprini-Cesari, R. Spighi, S. Vecchi, M. Villa, A. Vitale, A. Zoccoli, A. Bianconi, M. Corradini, A. Donzella, E. Lodi Rizzini, L. Venturelli, N. Zurlo, Yu. Kiryushin, A. Lanyov, D. Pose, S. Reznikov, S. Somov, G. Evgrafov, I. Belotelov, M.A. Reye, J. Felix, M. Medinni, M. Brauer, J. Spengler, V. Pugatch, Yu. Vasilev, V. Aushev, S. Prystupa, Yu. Pavlenko, V. Kyva, M. Molodyko, J.D. Hansen, R. Muresan, M. Staric, R. Pestotnik, A. Stanovnik, S. Erhan, P. Schlein, G. Medin, V.A. Bogatyrev, V. Balagura, M. Danilov, F. Khasanov, B. Fominykh, R. Mizuk, I. Matchikhilian, I. Rostovtseva, V. Popov, S. Esenov, S. Shuvalov, I. Tikhomirov, Yu. Zaitsev, S. Aplin, V. Galkin, A. Golovin, D. Ryzhikov, V. Savelev, M. Zaboudko, Y. Arestov, B. Chuiko, D. Konstantinov, V. Lishin, V. Shelikhov, L. Ferrero, R. Garfagnini, and G. Piragino
Published: 2004

45. Search for the flavor-changing neutral current decay D(0) ->mu(+)mu(-) with the HERA-B detector

Author: I. ABT, M. ADAMS, H. ALBRECHT, A. ALEKSANDROV, V. AMARAL, A. AMORIM, S. J. APLIN, V. AUSHEV, Y. BAGATURIA, V. BALAGURA, O. BARSUKOVA, J. BASTOS, J. BATISTA, C. BAUER, T.H. S. BAUER, A. BELKOV, A.R. BELKOV, B. BOBCHENKO, M. BOCKER, A. BOGATYREV, G. BOHM, M. BRAUER, M. BRUINSMA, M. BRUSCHI, P. BUCHHOLZ, M. BUCHLER, T. BURAN, J. CARVALHO, P. CONDE, C. CRUSE, M. DAM, K. M. DANIELSEN, M. DANILOV, H. DEPPE, X. DONG, H. B. DREIS, V. EGORYTCHEV, K. EHRET, F. EISELE, D. EMELIYANOV, S. ESSENOV, M. FEUERSTACK RAIBLE, J. FLAMMER, B. FOMINYKH, M. FUNCKE, L.L. GARRIDO, B. GIACOBBE, J. GLASS, D. GOLOUBKOV, Y. GOLUBKOV, A. GOLUTVIN, I. GOLUTVIN, I. GORBOUNOV, A. GORISEK, O. GOUCHTCHINE, D. C. GOULART, S. GRADL, W. GRADL, Y.U. GUILITSKY, J. D. HANSEN, R. HARR, J. M. HERNANDEZ, W. HOFMANN, T. HOTT, W. HULSBERGEN, U. HUSEMANN, O. IGONKINA, M. ISPIRYAN, T. JAGLA, C. JIANG, H. KAPITZA, S. KARABEKYAN, P. KARCHIN, N. KARPENKO, S. KELLER, J. KESSLER, F. KHASANOV, Y.U. KIRYUSHIN, K. T. KNOPFLE, H. KOLANOSKI, S. KORPAR, C. KRAUSS, P. KREUZER, P. KRIZAN, D. KRUCKER, S. KUPPER, T. KVARATSKHELIIA, A. LANYOV, K. LAU, B. LEWENDEL, T. LOHSE, B. LOMONOSOV, R. MANNER, S. MASCIOCCHI, I. MATCHIKHILIAN, G. MEDIN, M. MEDINNIS, M. MEVIUS, A. MICHETTI, Y.U. MIKHAILOV, R. MIZUK, R. MURESAN, S. NAM, M. ZUR NEDDEN, M. NEGODAEV, M. NORENBERG, S. NOWAK, M. T. NUNEZ PARDO DE VERA, M. OUCHRIF, F. OULD SAADA, C. PADILLA, D. PERALTA, R. PERNACK, R. PESTOTNIK, M. A. PLEIER, M. POLI, V. POPOV, A. POSE, D. POSE, S. PRYSTUPA, V. PUGATCH, Y. PYLYPCHENKO, J. PYRLIK, K. REEVES, D. RESSING, H. RICK, I. RIU, P. ROBMANN, V. RYBNIKOV, F. SANCHEZ, M. SCHMELLING, B. SCHMIDT, A. SCHREINER, H. SCHRODER, A. J. SCHWARTZ, A. S. SCHWARZ, B. SCHWENNINGER, B. SCHWINGENHEUER, F. SCIACCA, J. SHIU, S. SHUVALOV, L. SILVA, K. SMIRNOV, L. SOZUER, S. SOLUNIN, A. SOMOV, S. SOMOV, J. SPENGLER, R. SPIGHI, A. SPIRIDONOV, A. STANOVNIK, M. STARIC, C. STEGMANN, H. S. SUBRAMANIA, M. SYMALLA, I. TIKHOMIROV, M. TITOV, I. TSAKOV, U. UWER, C. VAN ELDIK, Y.U. VASSILIEV, I. VUKOTIC, H. WAHLBERG, A. H. WALENTA, M. WALTER, J. J. WANG, D. WEGENER, U. WERTHENBACH, H. WOLTERS, R. WURTH, A. WURZ, Y.U. ZAITSEV, M. ZAVERTYAEV, T. ZEUNER, A. ZHELEZOV, Z. ZHENG, R. ZIMMERMANN, T. ZIVKO, BARGIOTTI, MARIANNE, BERTIN, ANTONIO, DE CASTRO, STEFANO, FABBRI, LAURA, FACCIOLI, PIETRO, GRIMALDI, FILIPPO, MASSA, IGNAZIO GIACOMO, PICCININI, MAURIZIO, SBRIZZI, ANTONIO, SEMPRINI CESARI, NICOLA, VILLA, MAURO, VITALE, ANTONIO, ZOCCOLI, ANTONIO, I. ABT, M. ADAMS, H. ALBRECHT, A. ALEKSANDROV, V. AMARAL, A. AMORIM, S.J. APLIN, V. AUSHEV, Y. BAGATURIA, V. BALAGURA, M. BARGIOTTI, O. BARSUKOVA, J. BASTOS, J. BATISTA, C. BAUER, TH.S. BAUER, A. BELKOV, AR. BELKOV, A. BERTIN, B. BOBCHENKO, M. BOCKER, A. BOGATYREV, G. BOHM, M. BRAUER, M. BRUINSMA, M. BRUSCHI, P. BUCHHOLZ, M. BUCHLER, T. BURAN, J. CARVALHO, P. CONDE, C. CRUSE, M. DAM, K.M. DANIELSEN, M. DANILOV, S. DE CASTRO, H. DEPPE, X. DONG, H.B. DREIS, V. EGORYTCHEV, K. EHRET, F. EISELE, D. EMELIYANOV, S. ESSENOV, L. FABBRI, P. FACCIOLI, M. FEUERSTACK-RAIBLE, J. FLAMMER, B. FOMINYKH, M. FUNCKE, LL. GARRIDO, B. GIACOBBE, J. GLASS, D. GOLOUBKOV, Y. GOLUBKOV, A. GOLUTVIN, I. GOLUTVIN, I. GORBOUNOV, A. GORISEK, O. GOUCHTCHINE, D.C. GOULART, S. GRADL, W. GRADL, F. GRIMALDI, YU. GUILITSKY, J.D. HANSEN, R. HARR, J.M. HERNANDEZ, W. HOFMANN, T. HOTT, W. HULSBERGEN, U. HUSEMANN, O. IGONKINA, M. ISPIRYAN, T. JAGLA, C. JIANG, H. KAPITZA, S. KARABEKYAN, P. KARCHIN, N. KARPENKO, S. KELLER, J. KESSLER, F. KHASANOV, YU. KIRYUSHIN, K.T. KNOPFLE, H. KOLANOSKI, S. KORPAR, C. KRAUSS, P. KREUZER, P. KRIZAN, D. KRUCKER, S. KUPPER, T. KVARATSKHELIIA, A. LANYOV, K. LAU, B. LEWENDEL, T. LOHSE, B. LOMONOSOV, R. MANNER, S. MASCIOCCHI, I. MASSA, I. MATCHIKHILIAN, G. MEDIN, M. MEDINNIS, M. MEVIUS, A. MICHETTI, YU. MIKHAILOV, R. MIZUK, R. MURESAN, S. NAM, M. ZUR NEDDEN, M. NEGODAEV, M. NORENBERG, S. NOWAK, M.T. NUNEZ PARDO DE VERA, M. OUCHRIF, F. OULD-SAADA, C. PADILLA, D. PERALTA, R. PERNACK, R. PESTOTNIK, M. PICCININI, M.A. PLEIER, M. POLI, V. POPOV, A. POSE, D. POSE, S. PRYSTUPA, V. PUGATCH, Y. PYLYPCHENKO, J. PYRLIK, K. REEVES, D. RESSING, H. RICK, I. RIU, P. ROBMANN, V. RYBNIKOV, F. SANCHEZ, A. SBRIZZI, M. SCHMELLING, B. SCHMIDT, A. SCHREINER, H. SCHRODER, A.J. SCHWARTZ, A.S. SCHWARZ, B. SCHWENNINGER, B. SCHWINGENHEUER, F. SCIACCA, N. SEMPRINI-CESARI, J. SHIU, S. SHUVALOV, L. SILVA, K. SMIRNOV, L. SOZUER, S. SOLUNIN, A. SOMOV, S. SOMOV, J. SPENGLER, R. SPIGHI, A. SPIRIDONOV, A. STANOVNIK, M. STARIC, C. STEGMANN, H.S. SUBRAMANIA, M. SYMALLA, I. TIKHOMIROV, M. TITOV, I. TSAKOV, U. UWER, C. VAN ELDIK, YU. VASSILIEV, M. VILLA, A. VITALE, I. VUKOTIC, H. WAHLBERG, A.H. WALENTA, M. WALTER, J.J. WANG, D. WEGENER, U. WERTHENBACH, H. WOLTERS, R. WURTH, A. WURZ, YU. ZAITSEV, M. ZAVERTYAEV, T. ZEUNER, A. ZHELEZOV, Z. ZHENG, R. ZIMMERMANN, T. ZIVKO, and A. ZOCCOLI
Abstract: We report on a search for the flavor-changing neutral current decay $D^0 to mu^+mu^-$ using $50 times 10^6$ events recorded with a dimuon trigger in interactions of 920 GeV protons with nuclei by the HERA-B experiment. We find no evidence for such decays and set a 90% confidence level upper limit on the branching fraction $Br(D^0 to mu^+mu^-)
Published: 2004

46. Limits for the central production of Theta(+) and Xi(--) pentaquarks in 920-GeV pA collisions

Author: I. ABT, M. ADAMS, M. AGARI, H. ALBRECHT, A. ALEKSANDROV, V. AMARAL, A. AMORIM, S. J. APLIN, V. AUSHEV, Y. BAGATURIA, V. BALAGURA, O. BARSUKOVA, J. BASTOS, J. BATISTA, C. BAUER, T.H. S. BAUER, A. BELKOV, A.R. BELKOV, I. BELOTELOV, B. BOBCHENKO, M. BOCKER, A. BOGATYREV, G. BOHM, M. BRAUER, M. BRUINSMA, M. BRUSCHI, P. BUCHHOLZ, T. BURAN, J. CARVALHO, P. CONDE, C. CRUSE, M. DAM, K. M. DANIELSEN, M. DANILOV, H. DEPPE, X. DONG, H. B. DREIS, V. EGORYTCHEV, K. EHRET, F. EISELE, D. EMELIYANOV, S. ESSENOV, M. FEUERSTACK RAIBLE, J. FLAMMER, B. FOMINYKH, M. FUNCKE, L.L. GARRIDO, B. GIACOBBE, J. GLASS, D. GOLOUBKOV, Y. GOLUBKOV, A. GOLUTVIN, I. GOLUTVIN, I. GORBOUNOV, A. GORISEK, O. GOUCHTCHINE, D. C. GOULART, S. GRADL, W. GRADL, Y.U. GUILITSKY, J. D. HANSEN, J. M. HERNANDEZ, W. HOFMANN, T. HOTT, W. HULSBERGEN, U. HUSEMANN, O. IGONKINA, M. ISPIRYAN, T. JAGLA, C. JIANG, H. KAPITZA, S. KARABEKYAN, N. KARPENKO, S. KELLER, J. KESSLER, F. KHASANOV, Y.U. KIRYUSHIN, K. T. KNOPFLE, H. KOLANOSKI, S. KORPAR, C. KRAUSS, P. KREUZER, P. KRIZAN, D. KRUCKER, S. KUPPER, T. KVARATSKHELIIA, A. LANYOV, K. LAU, B. LEWENDEL, T. LOHSE, B. LOMONOSOV, R. MANNER, S. MASCIOCCHI, I. MATCHIKHILIAN, G. MEDIN, M. MEDINNIS, M. MEVIUS, A. MICHETTI, Y.U. MIKHAILOV, R. MIZUK, R. MURESAN, M. ZUR NEDDEN, M. NEGODAEV, M. NORENBERG, S. NOWAK, M. T. NUNEZ PARDO DE VERA, M. OUCHRIF, F. OULD SAADA, C. PADILLA, D. PERALTA, R. PERNACK, R. PESTOTNIK, M. A. PLEIER, M. POLI, V. POPOV, A. POSE, D. POSE, S. PRYSTUPA, V. PUGATCH, Y. PYLYPCHENKO, J. PYRLIK, K. REEVES, D. RESSING, H. RICK, I. RIU, P. ROBMANN, I. ROSTOVTSEVA, V. RYBNIKOV, F. SANCHEZ, M. SCHMELLING, B. SCHMIDT, A. SCHREINER, H. SCHRODER, A. J. SCHWARTZ, A. S. SCHWARZ, B. SCHWENNINGER, B. SCHWINGENHEUER, F. SCIACCA, S. SHUVALOV, L. SILVA, K. SMIRNOV, L. SOZUER, S. SOLUNIN, A. SOMOV, S. SOMOV, J. SPENGLER, R. SPIGHI, A. SPIRIDONOV, A. STANOVNIK, M. STARIC, C. STEGMANN, H. S. SUBRAMANIA, M. SYMALLA, I. TIKHOMIROV, M. TITOV, I. TSAKOV, U. UWER, C. VAN ELDIK, Y.U. VASSILIEV, I. VUKOTIC, H. WAHLBERG, A. H. WALENTA, M. WALTER, J. J. WANG, D. WEGENER, U. WERTHENBACH, H. WOLTERS, R. WURTH, A. WURZ, Y.U. ZAITSEV, M. ZAVERTYAEV, G. ZECH, T. ZEUNER, A. ZHELEZOV, Z. ZHENG, R. ZIMMERMANN, T. ZIVKO, BARGIOTTI, MARIANNE, BERTIN, ANTONIO, DE CASTRO, STEFANO, FABBRI, LAURA, FACCIOLI, PIETRO, GRIMALDI, FILIPPO, MASSA, IGNAZIO GIACOMO, PICCININI, MAURIZIO, SBRIZZI, ANTONIO, SEMPRINI CESARI, NICOLA, VILLA, MAURO, VITALE, ANTONIO, ZOCCOLI, ANTONIO, I. ABT, M. ADAMS, M. AGARI, H. ALBRECHT, A. ALEKSANDROV, V. AMARAL, A. AMORIM, S.J. APLIN, V. AUSHEV, Y. BAGATURIA, V. BALAGURA, M. BARGIOTTI, O. BARSUKOVA, J. BASTOS, J. BATISTA, C. BAUER, TH.S. BAUER, A. BELKOV, AR. BELKOV, I. BELOTELOV, A. BERTIN, B. BOBCHENKO, M. BOCKER, A. BOGATYREV, G. BOHM, M. BRAUER, M. BRUINSMA, M. BRUSCHI, P. BUCHHOLZ, T. BURAN, J. CARVALHO, P. CONDE, C. CRUSE, M. DAM, K.M. DANIELSEN, M. DANILOV, S. DE CASTRO, H. DEPPE, X. DONG, H.B. DREIS, V. EGORYTCHEV, K. EHRET, F. EISELE, D. EMELIYANOV, S. ESSENOV, L. FABBRI, P. FACCIOLI, M. FEUERSTACK-RAIBLE, J. FLAMMER, B. FOMINYKH, M. FUNCKE, LL. GARRIDO, B. GIACOBBE, J. GLASS, D. GOLOUBKOV, Y. GOLUBKOV, A. GOLUTVIN, I. GOLUTVIN, I. GORBOUNOV, A. GORISEK, O. GOUCHTCHINE, D.C. GOULART, S. GRADL, W. GRADL, F. GRIMALDI, YU. GUILITSKY, J.D. HANSEN, J.M. HERNANDEZ, W. HOFMANN, T. HOTT, W. HULSBERGEN, U. HUSEMANN, O. IGONKINA, M. ISPIRYAN, T. JAGLA, C. JIANG, H. KAPITZA, S. KARABEKYAN, N. KARPENKO, S. KELLER, J. KESSLER, F. KHASANOV, YU. KIRYUSHIN, K.T. KNOPFLE, H. KOLANOSKI, S. KORPAR, C. KRAUSS, P. KREUZER, P. KRIZAN, D. KRUCKER, S. KUPPER, T. KVARATSKHELIIA, A. LANYOV, K. LAU, B. LEWENDEL, T. LOHSE, B. LOMONOSOV, R. MANNER, S. MASCIOCCHI, I. MASSA, I. MATCHIKHILIAN, G. MEDIN, M. MEDINNIS, M. MEVIUS, A. MICHETTI, YU. MIKHAILOV, R. MIZUK, R. MURESAN, M. ZUR NEDDEN, M. NEGODAEV, M. NORENBERG, S. NOWAK, M.T. NUNEZ PARDO DE VERA, M. OUCHRIF, F. OULD-SAADA, C. PADILLA, D. PERALTA, R. PERNACK, R. PESTOTNIK, M. PICCININI, M.A. PLEIER, M. POLI, V. POPOV, A. POSE, D. POSE, S. PRYSTUPA, V. PUGATCH, Y. PYLYPCHENKO, J. PYRLIK, K. REEVES, D. RESSING, H. RICK, I. RIU, P. ROBMANN, I. ROSTOVTSEVA, V. RYBNIKOV, F. SANCHEZ, A. SBRIZZI, M. SCHMELLING, B. SCHMIDT, A. SCHREINER, H. SCHRODER, A.J. SCHWARTZ, A.S. SCHWARZ, B. SCHWENNINGER, B. SCHWINGENHEUER, F. SCIACCA, N. SEMPRINI-CESARI, S. SHUVALOV, L. SILVA, K. SMIRNOV, L. SOZUER, S. SOLUNIN, A. SOMOV, S. SOMOV, J. SPENGLER, R. SPIGHI, A. SPIRIDONOV, A. STANOVNIK, M. STARIC, C. STEGMANN, H.S. SUBRAMANIA, M. SYMALLA, I. TIKHOMIROV, M. TITOV, I. TSAKOV, U. UWER, C. VAN ELDIK, YU. VASSILIEV, M. VILLA, A. VITALE, I. VUKOTIC, H. WAHLBERG, A.H. WALENTA, M. WALTER, J.J. WANG, D. WEGENER, U. WERTHENBACH, H. WOLTERS, R. WURTH, A. WURZ, YU. ZAITSEV, M. ZAVERTYAEV, G. ZECH, T. ZEUNER, A. ZHELEZOV, Z. ZHENG, R. ZIMMERMANN, T. ZIVKO, and A. ZOCCOLI
Abstract: We have searched for Theta^+(1540) and Xi^{--}(1862) pentaquark candidates in proton-induced reactions on C, Ti and W targets at mid-rapidity and sqrt{s} = 41.6 GeV. In 2x10^8 inelastic events we find no evidence for narrow (sigma~5 MeV) signals in the Theta^+ -> pK_s and Xi^{--} -> Xi^-pi^- channels; our 95% CL upper limits (UL) for the inclusive production cross section times branching fraction Bx(dsigma/dy)|_{y~0} are 3.7 and 2.5 microb/N. The UL of the yield ratio of [Theta^+ / Lambda(1520)] < 2.7% is significantly lower than model predictions. Our UL of [BxXi^{--} / Xi(1530)^0] < 4% is at variance with the results that have provided first evidence for the Xi^{--} signal.
Published: 2004

47. Blood lead levels and potential sources of lead exposure among children in Montevideo, Uruguay

Author: Adriana Sosa, M. Méndez, M.J. Moll, D. Pose, A. Battocletti, and A. Laborde
Subjects: Lead (geology), business.industry, Environmental health, Lead exposure, Medicine, General Medicine, Toxicology, business
Published: 2016

48. Montevideo's health care centers, mercury sources identification and quantification

Author: M. Méndez, J. Torres, M. Perdomo, A. Laborde, D. Pose, and C. Lindner
Subjects: chemistry, business.industry, Environmental health, Health care, Environmental science, chemistry.chemical_element, General Medicine, Toxicology, business, Mercury (element)
Published: 2016

49. Measurement of the SMC muon beam polarisation using the asymmetry in the elastic scattering off polarised electrons

Author: E. Burtin, D. Crabb, T. Kageya, M. Boutemeur, D. Fasching, F. Perrot-Kunne, J. E.J. Oberski, T. Matsuda, D.V. Peshekhonov, I. Sabo, J. Ylöstalo, Jay Roberts, J. Cranshaw, M. Grosse Perdekamp, I.A. Savin, H. Gilly, J. Nassalski, N. de Botton, Takahiro Iwata, Victor Kukhtin, Lawrence Pinsky, A. Bravar, B. W. Mayes, E. Arik, W. Tlaczala, J. S. McCarthy, H. J. Kessler, Roland Windmolders, M. Lowe, A. Arvidson, H. Pereira, M. Litmaath, A. Nagaitsev, Y. Miyachi, M. Lamanna, Igor Golutvin, F. Feinstein, David Miller, L. Naumann, Julien Faivre, G. Unel, T. O. Niinikoski, T. Gaussiran, G.K. Mallot, F. Tessarotto, W. Kröger, H. Postma, J. Kiryluk, P. Schiavon, A. Schiller, B. Derro, Alessandro Bressan, D. von Harrach, Lau Gatignon, Abhay Deshpande, N.I. Zamiatin, L. Ropelewski, K. P. Schüler, P. Berglund, E. Rondio, J. H. Moromisato, G. Reicherz, P. Björkholm, Yannis K. Semertzidis, Mayda Velasco, F. Marie, L. Betev, S. Eichblatt, Patrick Hautle, T. Hasegawa, G.I. Smirnov, S. Dalla Torre, Alan D. Martin, J. M. Le Goff, T. Çuhadar, C. Cavata, Regine Willumeit, Matias Rodriguez, S. K. Dhawan, C. Dulya, G. van Middelkoop, A. Magnon, B. Frois, Günter Baum, I. Kiryushin, A. Ogawa, E. M. Kabuß, N. De Groot, J. Vogt, Naoaki Horikawa, E. von Goeler, P. Shanahan, A. Kishi, G. Rädel, G. Igo, W. Meyer, S. Rock, Clemens A. Heusch, F. Simeoni, R. Seitz, K. Haft, Ricardo Piegaia, M. Plo, A. de Lesquen, J. Pretz, L. Klostermann, J. A. Garzon, Franco Bradamante, M. Giorgi, St. Goertz, B. Badelek, S. Forthmann, C. Fernandez, R. Birsa, N. Hayashi, A. Sandacz, C.S. Ozben, Yu. Kisselev, T. Lindqvist, J. Kyynäräinen, K. Zaremba, A. Witzmann, D. L. Adams, J. Saborido, T. Akdogan, G. Bardin, A. Rijllart, Bernardo Adeva, A. Dyring, Heinrich B. Stuhrmann, A. Staude, J. Zhao, A. Gallas, T. J. Ketel, V. W. Hughes, Ulrich Landgraf, V. Krivokhijine, A. Karev, F. Lehar, T. Pussieux, Wojciech Wislicki, J. Lichtenstadt, A. Steinmetz, B. E. Bonner, Rudiger Voss, S. Bültmann, D. Pose, Michal Szleper, S. Ishimoto, S. Platchkov, J. Martino, R. van Dantzig, Daniel B. Kramer, Sergey M. Sergeev, G. Gracia, D. Thers, E. P. Sichtermann, M. Clocchiatti, U. Stiegler, Kunikazu Mori, K. Medved, Anna Zanetti, K. Kurek, C. A. Whitten, A. Tripet, D., Adam, B., Adeva, T., Akdogan, E., Arik, A., Arvidson, B., Badelek, G., Bardin, Guenter, Baum, P., Berglund, L., Betev, Birsa, Renato, P., Bjorkholm, B. E., Bonner, N., de Botton, M., Boutemeur, Bradamante, Franco, A., Bravar, Bressan, Andrea, Stephen L., Bueltmann, E., Burtin, C., Cavata, M., Clocchiatti, D., Crabb, J., Cranshaw, T., Cuhadar, DALLA TORRE, Silvia, R., van Dantzig, B., Derro, A., Deshpande, S., Dhawan, C., Dulya, A., Dyring, S., Eichblatt, J. C., Faivre, D., Fasching, F., Feinstein, C., Fernandez, S., Forthmann, B., Froi, A., Galla, J. A., Garzon, L., Gatignon, T., Gaussiran, H., Gilly, Giorgi, Marcello, E., von Goeler, S., Goertz, I. A., Golutvin, G., Gracia, N., De Groot, M., Grosse Perdekamp, K., Haft, D., von Harrach, T., Hasegawa, P., Hautle, N., Hayashi, C. A., Heusch, N., Horikawa, V. W., Hughe, G., Igo, S., Ishimoto, T., Iwata, E. M., Kabu, T., Kageya, A., Karev, H. J., Kessler, T. J., Ketel, J., Kiryluk, I., Kiryushin, A., Kishi, Kisselev, Y. u., L., Klostermann, D., Kramer, V., Krivokhizhin, W., Kroger, V., Kukhtin, K., Kurek, J., Kyynarainen, M., Lamanna, U., Landgraf, J. M., Le Goff, F., Lehar, A., de Lesquen, J., Lichtenstadt, T., Lindqvist, M., Litmaath, M., Lowe, A., Magnon, G. K., Mallot, F., Marie, Martin, Anna, J., Martino, T., Matsuda, B., Maye, J. S., Mccarthy, K., Medved, W., Meyer, G., van Middelkoop, D., Miller, Y., Miyachi, K., Mori, J., Moromisato, A., Nagaitsev, J., Nassalski, L., Naumann, T. O., Niinikoski, J. E. J., Oberski, A., Ogawa, C., Ozben, H., Pereira, F., Kunne, D., Peshekhonov, R., Piegaia, Lawrence S., Pinsky, S., Platchkov, M., Plo, D., Pose, H., Postma, J., Pretz, T., Pussieux, G., Radel, A., Rijllart, G., Reicherz, J. B., Robert, S. E., Rock, M., Rodriguez, E., Rondio, L., Ropelewski, I., Sabo, J., Saborido, A., Sandacz, Igor A., Savin, P., Schiavon, A., Schiller, K. P., Schuler, R., Seitz, Y., Semertzidi, S., Sergeev, P., Shanahan, E. P., Sichtermann, F., Simeoni, G. I., Smirnov, A., Staude, A., Steinmetz, U., Stiegler, H., Stuhrmann, M., Szleper, F., Tessarotto, D., Ther, W., Tlaczala, A., Tripet, G., Unel, M., Velasco, J., Vogt, R., Vo, C., Whitten, R., Windmolder, R., Willumeit, W., Wislicki, A., Witzmann, J., Ylostalo, A. M., Zanetti, K., Zaremba, N. I., Zamiatin, J., Zhao, and (Astro)-Particles Physics
Subjects: electron, Nuclear and High Energy Physics, SMC, DIS, muon polarimeter, media_common.quotation_subject, muon beam, Electron, Asymmetry, Nuclear physics, Magnetization, polarisation measurement, Detectors and Experimental Techniques, Nuclear Experiment, Instrumentation, media_common, Physics, Elastic scattering, Large Hadron Collider, Muon, polarised scattering, magnetised target, Polarimeter, polarised muon, Polarization (waves), Physics::Accelerator Physics, High Energy Physics::Experiment, polarised
Abstract: A muon beam polarimeter was built for the SMC experiment at the CERN SPS, for beam energies of 100 and 190 GeV. The beam polarisation is determined from the asymmetry in the elastic scattering off the polarised electrons of a ferromagnetic target whose magnetisation is periodically reversed. At muon energies of 100 and 190 GeV the measured polarisation is P-mu = -0.80 +/- 0.03 (stat.) +/- 0.02 (syst.) and P-mu = - 0.797 +/- 0.011 (stat.) +/- 0.012 (syst.), respectively. These results agree with measurements of the beam polarisation using a shape analysis of the decay positron energy spectrum. (C) 2000 Elsevier Science B.V. All rights reserved.
Published: 2000

50. Measurement of the spin-dependent structure function g1(x) of the deuteron

Author: Alan D. Martin, T. Gaussiran, W. Grübler, E. Burtin, B. E. Bonner, J. Moromisato, Jay Roberts, M. Grosse Perdekamp, C.A. Heusch, T. Layda, J.A. Buchanan, M. Rodriguez, Rudiger Voss, Takahiro Iwata, S. Ishimoto, S. Bültmann, M. Boutemeur, D. Fasching, E. M. Kabuß, A. Magnon, S. Trentalange, F. Perrot-Kunne, D. Pose, B. Frois, F. Sever, K. Lau, J. S. McCarthy, B. W. Mayes, A. Rosado, Lawrence S. Pinsky, A. de Lesquen, G. Gracia, M. D. Corcoran, P. Schiavon, L. Ropelewski, J. Martino, Sergey M. Sergeev, Günter Baum, N. de Botton, H. Stuhrmann, J. Vogt, D. Sanders, D. Crabb, R. Seitz, F. Feinstein, T. Pussieux, S. Eichblatt, N Horikawa, L. Betev, Shafqat Ahmad, D. Peshekhonov, J. Kyynäräinen, G.S. Mutchler, E. von Goeler, J.M. Clement, J. Lichtenstadt, J. Saborido, G. Smirnov, A. Witzmann, S. K. Dhawan, I. Sabo, A. Sandacz, J. Pyrlik, P. Shanahan, M. de Jong, H. Postma, V. Kukhtin, F. Tessarotto, H. J. Kessler, P. Björkholm, G. Igo, A. Arvidson, Tjeerd Ketel, C. Dulya, S. Platchkov, N. Hayashi, J. Mitchell, C. Cavata, A. Brüll, N.I. Zamiatin, M. Plo, Vernon W. Hughes, A. Karev, David Miller, I. G. Bird, S. Lopez-Ponte, J. A. Garzon, Franco Bradamante, R. Birsa, S. Okumi, Yu. Kisselev, Ricardo Piegaia, Roy Weinstein, M. Giorgi, A. Kishi, W. Knop, R. Windmolders, L. Klostermann, S. Dalla Torre, M. Lowe, C. Garabatos, B. Neganov, I. Savin, T. Lindqvist, M. Clocchiatti, Y. Tzamouranis, Aldo Penzo, Gerhard K. Mallot, A. Steinmetz, W. Thiel, L. Gatignon, Patrick Hautle, T. Çuhadar, G. Bardin, M. Ballintijn, J. M. Rieubland, J. Nassalski, K.M. Teichert, A. Yañez, Wojciech Wislicki, M. Lamanna, Donal Day, Guillermo Mesa Perez, I.A. Goloutvin, T. O. Niinikoski, B. Badelek, C. Fernandez, J. Cranshaw, Per Berglund, Julien Faivre, Andrés Gómez, I. Kiryushin, J. Oberski, A. Staude, J. P. Chen, V. Krivokhijine, F. Lehar, Ulrich Landgraf, Alessandro Bressan, D. von Harrach, Mayda Velasco, F. Marie, R. van Dantzig, G. van Middelkoop, C. A. Whitten, P. Schuler, K. Mori, R. Kaiser, Anna Zanetti, R. Segel, A. Rijllart, Bernardo Adeva, A. Dyring, L. Naumann, T. Hasegawa, E. Rondio, G. Salvato, M. Litmaath, Adeva, B., Ahmad, S., Arvidson, A., Badelek, B., Ballintijn, M. K., Bardin, G., Baum, G., Berglund, P., Betev, L., Bird, I. G., Birsa, Renato, Björkholm, P., Bonner, B. E., de Botton, N., Boutemeur, M., Bradamante, Franco, Bressan, Andrea, Brüll, A., Buchanan, J., Bültmann, S., Burtin, E., Cavata, C., Chen, J. P., Clement, J., Clocchiatti, M., Corcoran, M. D., Crabb, D., Cranshaw, J., Çuhadar, T., DALLA TORRE, Silvia, van Dantzig, R., Day, D., Dhawan, S., Dulya, C., Dyring, A., Eichblatt, S., Faivre, J. C., Fasching, D., Feinstein, F., Fernandez, C., Frois, B., Garabatos, C., Garzon, J. A., Gatignon, L., Gaussiran, T., Giorgi, Marcello, von Goeler, E., Goloutvin, I. A., Gomez, A., Gracia, G., Grosse Perdekamp, M., Grübler, W., von Harrach, D., Hasegawa, T., Hautle, P., Hayashi, N., Heusch, C. A., Horikawa, N., Hughes, V. W., Igo, G., Ishimoto, S., Iwata, T., de Jong, M., Kabuß, E. M., Kaiser, R., Karev, A., Kessler, H. J., Ketel, T. J., Kiryushin, I., Kishi, A., Kisselev, Y. u., Klostermann, L., Knop, W., Krivokhijine, V., Kukhtin, V., Kyynäräinen, J., Lamanna, M., Landgraf, U., Lau, K., Layda, T., Lehar, F., de Lesquen, A., Lichtenstadt, J., Lindqvist, T., Litmaath, M., Lopez Ponte, S., Lowe, M., Magnon, A., Mallot, G. K., Marie, F., Martin, Anna, Martino, J., Mayes, B., Mccarthy, J. S., van Middelkoop, G., Miller, D., Mitchell, J., Mori, K., Moromisato, J., Mutchler, G. S., Nassalski, J., Naumann, L., Neganov, B., Niinikoski, T. O., Oberski, J. E. J., Okumi, S., Penzo, A., Perez, G., Perrot Kunne, F., Peshekhonov, D., Piegaia, R., Pinsky, L., Platchkov, S., Plo, M., Pose, D., Postma, H., Pussieux, T., Pyrlik, J., Rieubland, J. M., Rijllart, A., Roberts, J. B., Rodriguez, M., Rondio, E., Ropelewski, L., Rosado, A., Sabo, I., Saborido, J., Salvato, G., Sandacz, A., Sanders, D., Savin, I., Schiavon, Paolo, Schüler, P., Segel, R., Seitz, R., Sergeev, S., Sever, F., Shanahan, P., Smirnov, G., Staude, A., Steinmetz, A., Stuhrmann, H., Teichert, K. M., Tessarotto, F., Thiel, W., Trentalange, S., Tzamouranis, Y., Velasco, M., Vogt, J., Voss, R., Weinstein, R., Whitten, C., Windmolders, R., Wislicki, W., Witzmann, A., Yañez, A., Zamiatin, N. I., and Zanetti, A. M.
Subjects: deuteron: polarized target, Nuclear and High Energy Physics, INELASTIC E-P, POLARIZED PROTONS, SUM-RULE, SCATTERING, ELECTROPRODUCTION, ASYMMETRY, Proton, polarized target: deuteron, deep inelastic scattering: muon deuteron, structure function: spin, muon deuteron: deep inelastic scattering, Nuclear physics, MODEL, TheoryofComputation_ANALYSISOFALGORITHMSANDPROBLEMCOMPLEXITY, Neutron, polarized beam: muon, Spin-½, Physics, Quantum chromodynamics, spin: structure function, Muon, Scattering, deuteron: structure function, nucleon: structure function, CERN SPS, Deep inelastic scattering, moment, magnetic spectrometer: experimental results, approx. 100 GeV, Sum rule in quantum mechanics, muon: polarized beam, Particle Physics - Experiment
Abstract: We report on the first measurement of the spin-dependent structure function g1d of the deuteron in the deep inelastic scattering of polarised muons off polarised deuterons, in the kinematical range 0.006222. The first moment, Γ1d=sh{phonetic}01 g1d dx=0.023±0.020 (stat.) ± 0.015 (syst.), is smaller than the prediction of the Ellis-Jaffe sum rules. Using earlier measurements of g1p, we infer the first moment of the spin-dependent neutron structure function g1n. The difference Γ1p-Γ1n=0.20 ±0.05 (stat.) ± 0.04 (syst.) agrees with the prediction of the Bjorken sum rule, Γ1p-Γ1n=0.191 ±0.002.
Published: 1993

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