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1. Design of a High Performances Small Animal PET System With Axial Oriented Crystals and DOI Capability

Author

David Brasse, D. Huss, S. Salvador, Département Recherches Subatomiques (DRS-IPHC), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Louis Pasteur - Strasbourg I-Centre National de la Recherche Scientifique (CNRS), Département Recherches Subatomiques ( DRS-IPHC ), and Institut National de Physique Nucléaire et de Physique des Particules du CNRS ( IN2P3 ) -Université Louis Pasteur - Strasbourg I-Centre National de la Recherche Scientifique ( CNRS )

Subjects
Nuclear and High Energy Physics, Photomultiplier, [SDV.IB.IMA]Life Sciences [q-bio]/Bioengineering/Imaging, Photodetector, high throughput, 01 natural sciences, Lyso, Detection efficiency, 030218 nuclear medicine & medical imaging, Crystal, 03 medical and health sciences, 0302 clinical medicine, Optics, small animal imaging, 0103 physical sciences, Figure of merit, positron emission tomography (PET), Electrical and Electronic Engineering, Image resolution, spatial resolution, [ SDV.IB.IMA ] Life Sciences [q-bio]/Bioengineering/Imaging, Physics, 010308 nuclear & particles physics, business.industry, Detector, Solid angle, Nuclear Energy and Engineering, business
Abstract

In most Positron Emission Tomography (PET) systems dedicated to small animal imaging, the geometry of the detector module is based on a block structure where the crystal elements are coupled to a reduced number of photomultiplier tubes (PMT). In this configuration, the spatial resolution and the detection efficiency depend on the crystal dimensions and thus there is a correlation between these two figures of merit. In this paper, we present a method already used by Ter-Pogossian in the 1970s allowing the spatial resolution and the detection efficiency to be independent of each other. The crystals are oriented in the axial direction readout on both sides by individual photodetector channels. The spatial resolution in the transverse plane is driven by the crystal section and the spatial resolution in the axial direction is proportional to the contrast of the light collected on both sides of the crystal. The detection efficiency depends on the number of radial crystal layers and the geometry of the system. With the perfect knowledge of the interaction depth, the inner diameter of the PET system can be reduced to a minimum value leading to an increase in detection efficiency. We investigate two particular geometries dedicated to mouse and whole purpose studies and based on the same detection module. Each module consists on a matrix of 32 $,times,$24 LYSO:Ce crystals of 1.5 mm$,times,$1.5 mm$,times,$25 mm each read at both ends by a Photonis Corp multi-channel plate photodetector. The surface treatment is optimized to reach a volumetric spatial resolution of 1 mm$^{3}$. The detection efficiency of each system is evaluated using Monte Carlo simulation. The mouse and whole purpose systems a- - re based on 4 and 6 modules with an inner diameter of 61.2 mm and 103.2 mm where the axial extent is 25 mm leading to a detection efficiency of 18% and 13%, respectively. This geometrical configuration leads to a detection efficiency close to the system solid angle with a volumetric spatial resolution of 1 mm$^{3}$ .

Published
2009
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2. An operative gamma camera for sentinel lymph node procedure in case of breast cancer

Author

Carole Mathelin, Jean-Louis Guyonnet, S. Salvador, D. Huss, V Bekaert, Département Recherches Subatomiques (DRS-IPHC), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Louis Pasteur - Strasbourg I-Centre National de la Recherche Scientifique (CNRS), Service de gynécologie–obstétrique, CHU Strasbourg-Hôpital de Hautepierre [Strasbourg], Département Recherches Subatomiques ( DRS-IPHC ), and Institut National de Physique Nucléaire et de Physique des Particules du CNRS ( IN2P3 ) -Université Louis Pasteur - Strasbourg I-Centre National de la Recherche Scientifique ( CNRS )

Subjects
Photomultiplier, medicine.medical_specialty, [SDV.IB.IMA]Life Sciences [q-bio]/Bioengineering/Imaging, Sentinel lymph node, computer-aided so, Field of view, [SDV.CAN]Life Sciences [q-bio]/Cancer, PET PET/CT, Medical-image reconstruction methods and algorithms, 030218 nuclear medicine & medical imaging, law.invention, [ SDV.CAN ] Life Sciences [q-bio]/Cancer, 03 medical and health sciences, 0302 clinical medicine, Breast cancer, Optics, law, medicine, Medical physics, Detectors and Experimental Techniques, Instrumentation, Gamma camera, coronary CT angiography (CTA), Mathematical Physics, [ SDV.IB.IMA ] Life Sciences [q-bio]/Bioengineering/Imaging, Physics, Large field of view, business.industry, Collimator, medicine.disease, 030220 oncology & carcinogenesis, SPECT, business, Gamma probe
Abstract

Large field of view gamma cameras are widely used to perform lymphoscintigraphy in the sentinel lymph nodes (SLN) procedure in case of breast cancer. However, they are not specified for this application and their sizes do not enable their use in the operative room to control the excision of the all SLN. We present the results obtained with a prototype of a new mini gamma camera developed especially for the operative lymphoscintigraphy of the axillary area in case of breast cancer. This prototype is composed of 10 mm thick parallel lead collimator, a 2 mm thick GSO:Ce inorganic scintillating crystal from Hitachi and a Hamamatsu H8500 flat panel multianode (64 channels) photomultiplier tube (MAPMT) equipped with a dedicated electronics. Its actual field of view is 50 × 50mm2. The gamma interaction position in the GSO scintillating plate is obtained by calculating the center of gravity of the fired MAPMT channels. The measurements performed with this prototype demonstrate the usefulness of this mini gamma camera for the pre, per and post-operative identification of SLN's and how its complementary role with an intraoperative handheld gamma probe enables to improve the efficiency of this practice. A 100 × 100mm2 field of view camera designated to cover the entire axillary area is under investigation.

Published
2007
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3. Precise Localization of Sentinel Lymph Nodes and Estimation of Their Depth Using a Prototype Intraoperative Mini $\gamma$-Camera in Patients with Breast Cancer

Author

S. Salvador, D. Huss, Jean-Louis Guyonnet, Carole Mathelin, Service de gynécologie–obstétrique, CHU Strasbourg-Hôpital de Hautepierre [Strasbourg], Département Recherches Subatomiques (DRS-IPHC), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Louis Pasteur - Strasbourg I-Centre National de la Recherche Scientifique (CNRS), Département Recherches Subatomiques ( DRS-IPHC ), and Institut National de Physique Nucléaire et de Physique des Particules du CNRS ( IN2P3 ) -Université Louis Pasteur - Strasbourg I-Centre National de la Recherche Scientifique ( CNRS )

Subjects
Adult, medicine.medical_specialty, [SDV.IB.IMA]Life Sciences [q-bio]/Bioengineering/Imaging, Biopsy, Sentinel lymph node, Field of view, Breast Neoplasms, [SDV.CAN]Life Sciences [q-bio]/Cancer, 030218 nuclear medicine & medical imaging, law.invention, [ SDV.CAN ] Life Sciences [q-bio]/Cancer, 03 medical and health sciences, 0302 clinical medicine, Breast cancer, breast cancer, lymphoscintigraphy, sentinel lymph node, law, medicine, Humans, Radiology, Nuclear Medicine and imaging, In patient, Gamma Cameras, Radionuclide Imaging, [ SDV.IB.IMA ] Life Sciences [q-bio]/Bioengineering/Imaging, Gamma camera, Aged, Neoplasm Staging, business.industry, Phantoms, Imaging, Sentinel Lymph Node Biopsy, Collimator, Middle Aged, medicine.disease, CarolIReS, intraoperative gamma-camera, Surgery, body regions, 030220 oncology & carcinogenesis, Female, Lymph, Lymph Nodes, Radiopharmaceuticals, Nuclear medicine, business
Abstract

The aim of this study was to evaluate the ability of a prototype intraoperative mini -camera, the CarolIReS, with a 50 x 50 mm field of view, to precisely localize sentinel lymph nodes (SLNs) and to determine their depth in a series of patients with infiltrative breast cancer requiring SLN excision. Methods: With the use of phantoms, the broadness of the signal of an acquired projection was shown to linearly depend on its distance from the collimator. A preclinical ex vivo study of 25 excised SLNs demonstrated that SLN size did not influence depth estimation. The minimum activity threshold for successful use of the proposed method was determined. After a preoperative radioisotope injection and lymphoscintigraphy, the SLN was localized in a series of 11 patients using both the mini -camera and a -probe. During surgery, a ruler was used to measure the depth of all SLNs before their excision. Results: Using the measured linear dependence of image broadness, we found that the expected SLN anatomic depth was compatible with its measured depth during surgery. Conclusion: This study showed that the mini -camera efficiently estimated the location of SLNs in 3 dimensions

Published
2007
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4. Determination of the event centrality in the WA97 and NA57 experiments

Author

Giorgio Torrieri, Rocco Caliandro, Roberto Barbera, Jan Pisut, G.S. Pappalardo, L. Sandor, Haavard Helstrup, T.A. Tulina, O. Villalobos Baillie, J. Urban, V. P. Kondratiev, J. Fedorisin, Michael A. Thompson, A. Kolojvari, N. Carrer, Anton Jusko, Ivan Kralik, F. Navach, E. Nappi, P. G. Kuijer, Rosario Turrisi, S. Di Liberto, A. Vascotto, B. Pastirčák, F. Posa, Wisla Carena, J.B. Kinson, V. Lenti, Janka Vrlakova, A. van den Brink, M. Morando, F.F. Valiev, R. A. Fini, B. Ghidini, E. Schillings, K. Fanebust, A. Michalon, D. Muigg, Eugenio Cantatore, Federico Antinori, David H. Evans, M. A. Mazzoni, G. Grella, Francesco Riggi, Pavel Staroba, G. Romano, R. Lietava, Roberto Divia, Domenico Di Bari, R. Sené, A. Palmeri, G Martinská, Davide Elia, T. Vik, W. Beusch, J. Ftacnik, A. Jacholkowski, W. Snoeys, P. Vande Vyvre, Trine Spedstad Tveter, D. Huss, Petr Zavada, K. Knudson, G. A. Feofilov, Gunnar Løvhøiden, M. Luptak, G.F. Segato, P.I. Norman, G. T. Jones, E. Quercigh, A.P. de Haas, A.K. Holme, N. Pišútová, M. Sené, M.E. Michalon-Mentzer, M. Campbell, Franco Meddi, Marisa Gulino, Tiziano Virgili, K. Šafařík, P van de Ven, Giuseppe Bruno, P. Jovanovic, A. Badalà, I. J. Bloodworth, Dieter Røhrich, R. Kamermans, M.F. Votruba, W. Klempt, F. Fayazzadeh, M. Henriquez, L. Vannucci, Vito Manzari, N. van Eijndhoven, I. Vinogradov, Institut de Recherches Subatomiques (IReS), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Cancéropôle du Grand Est-Université Louis Pasteur - Strasbourg I-Centre National de la Recherche Scientifique (CNRS), and Heyd, Yvette

Subjects
Physics, Nuclear and High Energy Physics, Particle physics, Strange quark, [PHYS.NEXP] Physics [physics]/Nuclear Experiment [nucl-ex], Nuclear Theory, Nuclear Interactions, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], Nuclear physics, Quark Gluon Plasma, Quark–gluon plasma, Nuclear Experiment, Nucleon, Centrality, Event (particle physics)
Abstract

The procedure employed by the WA97 and NA57 experiments to determine the number of wounded nucleons in different Pb + Pb centrality classes is discussed. We will also compare different centrality scales and their influence on the measurement of the centrality dependence of strange particle yields.

Published
2001

5. First results of Micromegas detector with fast integrated electronics

Author

Pascal Vanlaer, Jean-Marie Brom, J.M Helleboid, Jean-Charles Fontaine, F. Drouhin, A. Zghiche, Fabien Jeanneau, A Pallarès, R. Blaes, I. Ripp-Baudot, Y. Benhammou, D. Huss, F. Charles, F Didierjean, Institut de Recherches Subatomiques (IReS), and Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Cancéropôle du Grand Est-Université Louis Pasteur - Strasbourg I-Centre National de la Recherche Scientifique (CNRS)

Subjects
Physics, Nuclear and High Energy Physics, Large Hadron Collider, Physics::Instrumentation and Detectors, Detector, MicroMegas detector, Integrated circuit, Capacitance, Particle detector, law.invention, Nuclear physics, law, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], Physics::Accelerator Physics, High Energy Physics::Experiment, Electronics, Nuclear Experiment, Instrumentation, Beam (structure)
Abstract

A wedge-shaped Micromegas detector has been tested with a fast integrated electronics (PREMUX128). Due to the large capacitance of this detector, special care has been taken to protect electronics from possible streamers in the signal collection area; a study of the discharge mechanism is reported here. The signal-to-noise, spatial resolution and efficiency have been evaluated with a 100 GeV/c muons beam at the CERN X5 experimental area. Then the rate capability of this detector has been studied with a high rate 300 MeV /c pions beam at the Paul Scherrer Institute (PSI).

Published
2000

6. Beam test results of a wedge-shaped MSGC+GEM detector at CERN

Author

F. Drouhin, B. Schwaller, Fabien Jeanneau, A. Zghiche, V Mack, R. Blaes, Jean-Charles Fontaine, J.M. Brom, I. Ripp-Baudot, Y. Benhammou, D Huss, Institut de Recherches Subatomiques (IReS), and Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Cancéropôle du Grand Est-Université Louis Pasteur - Strasbourg I-Centre National de la Recherche Scientifique (CNRS)

Subjects
Physics, Nuclear and High Energy Physics, Large Hadron Collider, Physics::Instrumentation and Detectors, Resolution (electron density), Detector, Particle detector, Nuclear physics, Measuring instrument, Gas electron multiplier, [PHYS.PHYS.PHYS-INS-DET]Physics [physics]/Physics [physics]/Instrumentation and Detectors [physics.ins-det], Instrumentation, Image resolution, Beam (structure)
Abstract

Test results of Gas Electron Multiplier coupled with a MSGC in October 1997 are described. Several studies have been realized in a beam of Minimum Ionizing Particles (100 GeV/ c muons): signal-to-noise curves for different GEM amplifications and drift fields, spatial resolution, efficiency and cluster size. GEM acts as a simple added element with little disturbance of the system (on the electronics or no degradation of the spatial resolution).

Published
2000

7. Strange and multistrange baryon production in Pb-Pb collisions at 158 A GeV/c

Author

Leonardo Paolo Rossi, W. Beusch, K.L. Norman, Håvard Helstrup, S. Szafran, D. Huss, G. Vassiliadis, D. Di Bari, Pavel Staroba, P. Jovanovic, M. T. Muciaccia, F. Posa, J.B. Kinson, G. Tomasicchio, Federico Antinori, V.A. Kachanov, W. Geist, N. Armenise, G. Romano, S. Saladino, A.K. Holme, V. Lenti, J. C. Lassalle, E. Andersen, Alberto Andrighetto, N. Carrer, T.F. Thorsteinsen, G. Rosa, A. Kirk, Erik H.M. Heijne, M.F. Votruba, A. Jacholkowski, W. Klempt, Eugenio Nappi, C. Salvo, Gunnar Løvhøiden, G. Grella, P. Middelkamp, J. Bán, M. Sené, M. Campbell, S. Di Liberto, H. Beker, Eugenio Cantatore, Anton Jusko, B. Sopko, H. Rotscheidt, M. A. Mazzoni, B. Ghidini, J. P. Davies, R. A. Fini, A. Singovski, J. Urban, A. Michalon, B. Pastirčák, David H. Evans, V. Mack, Vito Manzari, J. Šťastný, A. Volte, J.A. Lien, Franco Meddi, K. Šafařík, Petr Zavada, F. Navach, T. Kachelhoffer, Michele Guida, R. Lietava, I. Králik, M. Luptak, G.F. Segato, M. G. Catanesi, Giovanni Darbo, L. Šándor, F. Pellegrini, R. Sené, M. Vaníčková, M. Morando, Paolo Martinengo, T. Scognetti, E. Quercigh, Jean-Charles Fontaine, E. Chesi, Bianca Osculati, T. Storås, Tiziano Virgili, M. Dameri, M.E. Michalon-Mentzer, K. Knudson, I. Mácha, Dario Barberis, P. Sennels, J. Bohm, S. Simone, A. Di Mauro, M. Venables, R. A. Loconsole, J. Ftacnik, Rocco Caliandro, A. Diaczek, K. Fanebust, K. Piska, D. Elia, C. Voltolini, O. Villalobos Baillie, R. A. Ricci, Physique Corpusculaire et Cosmologie - Collège de France (PCC), Collège de France (CdF (institution))-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Institut de Recherches Subatomiques (IReS), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Cancéropôle du Grand Est-Université Louis Pasteur - Strasbourg I-Centre National de la Recherche Scientifique (CNRS), Collège de France (CdF)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), and Heyd, Yvette

Subjects
Physics, Nuclear and High Energy Physics, Particle physics, Large Hadron Collider, Spectrometer, Quark-gluon plasma, nucleon, WA97, [PHYS.NEXP] Physics [physics]/Nuclear Experiment [nucl-ex], Detector, Strangeness, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], Tracking (particle physics), Omega, Baryon, Nuclear physics, Particle
Abstract

The series of experiments (WA85, WA94 and WA97) at the Omega spectrometer at CERN SPS have systematically studied the production of different strange particles. Strangeness enhancements at central rapidities have been reported by WA85 and WA94 in S-W and SS with respect to p-A collisions. For the investigation of PbPb interactions in the WA97 experiment a new detector suitable for high particle densities, the Pixel Tracking Chamber, has been developed based on silicon pixel detectors. The results on production ratios and cross sections of Λ, Λ , Ξ − , Ξ + , Ω − and Ω + detected by this experiment are presented. A significant enhancement of the Ω over Ξ ratio is observed when comparing p-Pb to PbPb data (a factor of about 3).

Published
1998

8. The trigger system of the first CMS tracker beam tests

Author

F. Drouhin, Y. Benhammou, D. Huss, Jean-Charles Fontaine, B. Schwaller, F. Charles, A. Pallares, C. Hoffmann, Institut de Recherches Subatomiques (IReS), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Cancéropôle du Grand Est-Université Louis Pasteur - Strasbourg I-Centre National de la Recherche Scientifique (CNRS), and Heyd, Yvette

Subjects
Physics, Nuclear and High Energy Physics, Physics::Instrumentation and Detectors, business.industry, Electrical engineering, law.invention, Software, Data acquisition, Nuclear Energy and Engineering, [PHYS.PHYS.PHYS-INS-DET] Physics [physics]/Physics [physics]/Instrumentation and Detectors [physics.ins-det], Robustness (computer science), law, Nuclear electronics, Scalability, Physics::Accelerator Physics, Electronics, [PHYS.PHYS.PHYS-INS-DET]Physics [physics]/Physics [physics]/Instrumentation and Detectors [physics.ins-det], Electrical and Electronic Engineering, business, Compact Muon Solenoid, Remote control, Computer hardware
Abstract

The trigger for the first compact muon solenoid (CMS) tracking beam tests is a dedicated system for analog multiplexed front-end electronics. With this first generation of electronics dedicated to CMS tracker detectors, some new specific development was necessary to read it with a multicrate distributed data acquisition (DAQ) system. The goal of this development was to reach a high scalability of experiment subsystems and a good robustness for test beams. Each subsystem had to be independent from the others, both from the hardware and software point of view. Remote control software for this system as well as further monitoring facilities were the required functions of the trigger system.

Published
1998

9. Charged current elastic antineutrino interactions in propane

Author

M. Schaeffer, N. Armenise, S. Bonetti, M.C. Pernigoni, J.P. Engel, Salvatore Nuzzo, J.L. Guyonnet, O. Skjeggestad, Donatella Cavalli, D. Allasia, A. Marzari Chiesa, D. Gamba, V. Bisi, F. Ruggieri, M.T. Fogli Muciaccia, T. W. Jones, L. Riccati, O. Erriquez, F. W. Bullock, R.C.W. Henderson, A. Pullia, D. Huss, J.L. Riester, F. Ramzan, B. Escoubes, A. Halsteinslid, K. Myklebost, A. Romero, A. Rognebakke, M. Rollier, Institut de Recherches Subatomiques (IReS), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Cancéropôle du Grand Est-Université Louis Pasteur - Strasbourg I-Centre National de la Recherche Scientifique (CNRS), and Heyd, Yvette

Subjects
Nuclear physics, Physics, Nuclear and High Energy Physics, chemistry.chemical_compound, Cross section (physics), [PHYS.HEXP] Physics [physics]/High Energy Physics - Experiment [hep-ex], chemistry, Propane, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], Atomic physics, Charged current
Abstract

A sample of 766 antineutrino charged current elastic events has been used to extract the variation of the elastic cross section with antineutrino energy and the distribution of d N /d q 2 . The best fit value for the parameter M A obtained from these measurements is M A = 0.91 ± 0.04 GeV/ c 2 for M V = 0.84 GeV/ c 2 . A simultaneous determination of M A and M V gives M A = 0.94 ± 0.07, M V = 0.81

Published
1979

10. Determination of D-meson lifetimes

Author

T. Handler, J. Salicio, H. Briand, R. Raghavan, U. Trevisan, E. P. Kistenev, C. Troncon, E. Di Capua, Simonetta Gentile, A. Michalon, B. Sellden, C. Defoix, P. Poropat, B. M. Whyman, P. V. Chliapnikov, M. Pernicka, J. R. Fry, V. Canale, Josef Hrubec, L. de Billy, S. Kitamura, E. Johanson, N. Colino, Gianni Zumerle, B. Vonck, D. B. Gibaut, Louis Lyons, J. L. Bailly, C. Pinori, V. A. Stopchenko, Y. Iga, C. Fernandez, V. V. Kniazev, S. Banerjee, H. Nowak, A. De Angelis, L. Haupt, L. Montanet, U. Gasparini, A. T. Goshaw, H. Leutz, Paolo Checchia, T. Moa, M. Mazzucato, J. Lemonne, K. Shankar, C. Caso, P. Wright, S. Falciano, J. Dumarchez, S. Squarcia, P. Mason, S-O. Holmgren, Alan Poppleton, J. Panella, S. N. Ganguli, J. Kesteman, R. Dimarco, M. Iori, Flavio Fontanelli, Yu Fisyak, R. Bizzarri, L. Ventura, Edoardo Castelli, E. Jegham, A. Subramanian, D. Huss, A. Gurtu, Evgueni Vlasov, F. Marchetto, S. Nilsson, R. Hamatsu, Giorgio Borreani, G. D. Patel, M. MacDermott, T. Tsurugai, M. Begalli, V.A. Uvarov, G. Otter, J. Dolbeau, I. Kita, P. Pilette, M. A. Houlden, W. Struczinski, H. Rohringer, Sten Hellman, C. Fisher, N. Oshima, P. E. Stamer, M. Laloum, P. Hughes, M. Aguilar-Benitez, Reinhard W. Schulte, R. Monge, J. Wickens, W. M. Bugg, Pierre Vilain, P. Belliere, W. Bartl, E. L. Hart, M. E. Michalon-Mentzer, A. Roth, G. Neuhofer, K. Sudhakar, R. Contri, K. Roberts, T. Yamagata, H. K. Nguyen, D. Kuhn, W.W.M. Allison, J. J. Hernandez, C. Voltolini, M. Sessa, R.J. Plano, I. Josa, M. C. Touboul, S. Reucroft, Fernand Grard, D. Crennell, B. Epp, G. Piredda, P. K. Malhotra, J. F. Baland, Laboratoire de Physique Nucléaire et de Hautes Énergies (LPNHE), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Institut de Recherches Subatomiques (IReS), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Cancéropôle du Grand Est-Université Louis Pasteur - Strasbourg I-Centre National de la Recherche Scientifique (CNRS), Aguilar Benitez, M., and Canale, Vincenzo

Subjects
Physics, Particle physics, Physics and Astronomy (miscellaneous), 010308 nuclear & particles physics, High resolution, Elementary particle, 01 natural sciences, 0103 physical sciences, Decay length, D meson, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], Hydrogen bubble, 010306 general physics, Engineering (miscellaneous), Particle Physics - Experiment
Abstract

D-meson lifetimes have been determined from decays observed in an exposure of the high resolution hydrogen bubble chamber LEBC in association with the European Hybrid Spectrometer (EHS) to an incident 360 GeV π− beam. Various techniques for lifetime determination are presented and the results compared. A new model-independent analysis based on the distribution in transverse decay length is introduced and preferred over other techniques. Best values are found to be: $$\begin{gathered} \tau (D^0 ) = \left( {4.1_{ - 0.3}^{ + 0.7} } \right) \times 10^{ - 13} s (60 decays) \hfill \\ \tau (D^ \pm ) = \left( {10.7_{ - 1.8}^{ + 2.8} } \right) \times 10^{ - 13} s (40 decays) \hfill \\ \end{gathered} $$ . The lifetime ratio is: $$T = \frac{{\tau (D^ \pm )}}{{\tau (D^0 )}} = 2.6_{ - 0.6}^{ + 0.8} $$ .

Published
1987

11. Inclusive D-meson branching ratios

Author

J. Laberrigue, K. Roberts, T. P. Yiou, A. Gurtu, P. Poropat, Rene Brun, U. Gasparini, H. K. Nguyen, B. Sellden, L. Ventura, D. Knauss, N. Colino, M. MacDermott, C. Fernandez, Josef Hrubec, C. Patrignani, A. T. Goshaw, M. Sessa, E. Jegham, D. Kuhn, E. Castelli, M. A. Houlden, R. Raghavan, S. Nilsson, J. L. Bailly, S. Gentile, S-O. Holmgren, V. Henri, R. Schulte, S. Squarcia, L. Haupt, M. C. Touboul, G. Neuhofer, R. Bizzarri, P. Beilliere, H. Leutz, Yu Fisyak, Paolo Checchia, M. Kalelkar, J. Salicio, C. Fisher, T. Moa, S. J. Colwill, E. P. Kistenev, P. Legros, W.W.M. Allison, H. Briand, Flavio Fontanelli, A. Poppleton, P. Hughes, M. Laloum, L. Montanet, M. Aguilar-Benitez, P. V. Chliapnikov, G. Piredda, E. Di Capua, C. Pinori, R. Ouared, U. Trevisan, M. Begalli, J. R. Fry, J. Dolbeau, R. Monge, C. F. Wild, A. De Angelis, R. Contri, R.J. Plano, J. Dumarchez, M. Iori, G. Zumerle, W. D. Walker, P. Mason, S. Falciano, D. B. Gibaut, W. J. Robertson, J. Duboc, Y. Iga, V. Canale, U. Gensch, S. Reucroft, K. Takahashi, C. Caso, D. Huss, C. Voltolini, C. Troncon, L. de Billy, Louis Lyons, T. Tsurugai, R. Di Marco, J. Panella Comellas, N. Oshima, M. Pernicka, F. Diez-Hedo, A. Michalon, M. E. Michalon-Mentzer, S. Hellman, V. V. Kniazev, K. Sudhakar, H. Nowak, W. Bartl, M. Mazzucato, M. I. Josa, A. Subramanian, G. Otter, H. Rohringer, P. E. Stamer, M. Eriksson, C. Defoix, S. Kitamura, A. G. Kholodenko, D. Crennell, W. Kowald, R. Hamatsu, V. A. Stopchenko, Pierre Vilain, G. D. Patel, P. Pilette, J. J. Hernandez, B. Vonck, K. E. Johansson, Evgueni Vlasov, Laboratoire de Physique Nucléaire et de Hautes Énergies (LPNHE), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Institut de Recherches Subatomiques (IReS), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Cancéropôle du Grand Est-Université Louis Pasteur - Strasbourg I-Centre National de la Recherche Scientifique (CNRS), LEBC-EHS, Aguilar Benitez, M., and Canale, Vincenzo

Subjects
Physics, Particle physics, Physics and Astronomy (miscellaneous), 010308 nuclear & particles physics, Spatially resolved, Branching (polymer chemistry), 01 natural sciences, Nuclear physics, 0103 physical sciences, D meson, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], Charm (quantum number), 010306 general physics, Engineering (miscellaneous), Particle Physics - Experiment
Abstract

Charm data from 360 GeV/c π−p and 400 GeV/cpp interactions are used to give results onD-meson branching ratios. The analysis is based on 438 charm events containing 608 spatially resolved charm particle decays. We present topological branching ratios, as well as the following inclusive branching ratios ofD-mesons into kaons: $$\begin{gathered} B(D^ \pm \to K^ \mp + anything) = 0.17 \pm 0.07, \hfill \\ B(D^ \pm \to K^ \pm + anything) = 0.08_{ - 0.05}^{ + 0.06} , \hfill \\ B(D^0 \to K^ \pm + anything) = 0.42 \pm 0.08, \hfill \\ B(D^0 \to K^ + + anything) = 0.03_{ - 0.02}^{ + 0.05} , \hfill \\ \end{gathered} $$ and the following semi-electronic branching ratios ofD-mesons: $$\begin{gathered} B(D^ \pm \to e^ \pm + anything) = 0.20_{ - 0.07}^{ + 0.09} , \hfill \\ B(D^0 \to e^ \pm + anything) = 0.15 \pm 0.05. \hfill \\ \end{gathered} $$

Published
1987

12. D-meson lifetimes

Author

P. Mason, M. Sessa, L. de Billy, Louis Lyons, Y. Iga, G. Piredda, C. F. Wild, K. Roberts, S. Reucroft, S. Gentile, J. R. Fry, M. C. Touboul, S. J. Colwill, Paolo Checchia, R. Contri, U. Trevisan, R. Ouared, P. K. Malhotra, J. Dolbeau, T. Moa, E. Jegham, A. De Angelis, M. Kalelkar, E. P. Kistenev, S. Nilsson, Flavio Fontanelli, K. Sudhakar, E. Di Capua, C. Fernandez, J. Duboc, V. Canale, C. Voltolini, S-O. Holmgren, M. Iori, C. Caso, M. Eriksson, A. T. Goshaw, C. Defoix, J. Salicio, D. Huss, J. L. Bailly, M. Begalli, S. Falciano, U. Gasparini, L. Haupt, L. Montanet, Yu Fisyak, S. Hellman, N. Colino, D. B. Gibaut, P. Beilliere, F. Diez-Hedo, S. Kitamura, G. Otter, P. Poropat, H. Leutz, A. Poppleton, K. Takahashi, H. Rohringer, R. Schulte, C. Troncon, J. Panella Comellas, Patrick Legros, E. Castelli, H. K. Nguyen, P. Hughes, R. Di Marco, A. Michalon, P. E. Stamer, W. J. Robertson, S. Squarcia, U. Gensch, R. Monge, C. Pinori, R. Hamatsu, W. Kowald, C. Fisher, Josef Hrubec, W. Bartl, G. Zumerle, M. Laloum, H. Nowak, H. Briand, V. V. Kniazev, M. MacDermott, M. Mazzucato, M. I. Josa, M. Pernicka, M. A. Houlden, M. E. Michalon-Mentzer, Fernand Grard, D. Crennell, D. Knauss, B. Sellden, R. Raghavan, A. G. Kholodenko, T. Tsurugai, A. Subramanian, G. Neuhofer, M. Aguilar-Benitez, P. V. Chliapnikov, N. Oshima, W.W.M. Allison, W. D. Walker, Pierre Vilain, R.J. Plano, G. D. Patel, P. Pilette, V. A. Stopchenko, J. J. Hernandez, B. Vonck, K. E. Johansson, Evgueni Vlasov, D. Kuhn, Laboratoire de Physique Nucléaire et de Hautes Énergies (LPNHE), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Institut de Recherches Subatomiques (IReS), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Cancéropôle du Grand Est-Université Louis Pasteur - Strasbourg I-Centre National de la Recherche Scientifique (CNRS), LEBC-EHS, Aguilar Benitez, M., and Canale, Vincenzo

Subjects
Physics, Nuclear physics, Nuclear and High Energy Physics, 010308 nuclear & particles physics, 0103 physical sciences, D meson, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], 010306 general physics, 01 natural sciences, Particle Physics - Experiment, 3. Good health
Abstract

We present the final results on the D-meson liftime measurements obtained by the NA27 experiment. From a sample of 145 D 0 D 0 and 149 D ± decays, we have measured τ (D 0 )=(4.6 +0.6 −0.5 )×10 −13 s, τ (D ± )=(11.2 +1.4 −1.1 )×10 −13 s, with a ratio R= τ( D ± ) τ( D 0 ) =2.4±0.4 .

Published
1987

13. Strange particle production by antineutrinos

Author

K. Myklebost, C. Franzinetti, M. Rollier, A. Marzari-Chiesa, A.G. Michette, L. Riccati, S. Bonetti, C. Racca, Salvatore Nuzzo, M. Schaeffer, M. J. Esten, B. Escoubes, O. Skjeggestad, R. Sacco, D. Gamba, A. Romero, M. Paty, D. Allasia, F. W. Bullock, A. Pullia, A. Rognebakke, O. Erriques, S. Natali, T. W. Jones, M.T. Fogli Muciaccia, J.L. Riester, J.L. Guyonnet, A. Halsteinslid, V. Bisi, Donatella Cavalli, G. Bonneaud, D. Huss, Heyd, Yvette, Institut de Recherches Subatomiques (IReS), and Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Cancéropôle du Grand Est-Université Louis Pasteur - Strasbourg I-Centre National de la Recherche Scientifique (CNRS)

Subjects
Nuclear physics, Physics, Nuclear and High Energy Physics, Strange quark, Neutral current, [PHYS.NEXP] Physics [physics]/Nuclear Experiment [nucl-ex], Form factor (quantum field theory), [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], Atomic physics, Strangeness, Charged current
Abstract

Cross sections are presented for antineutrino production of Λ, Σ0 and K0 in strangeness changing reactions. Associated production reactions (ΔS = 0) have been observed in the charged and the neutral current channels. For the elastic reaction vp → μ+Λ, estimates have been made of the axial transition form factor.

Published
1977

14. Experimental results on one-pion neutral current reaction in all channels induced by antineutrinos at CERN PS

Author

M. Paty, Salvatore Nuzzo, A. Rognebakke, J.L. Riester, J.P. Engel, K. Myklebost, Donatella Cavalli, D. Huss, A. Halsteinslid, R.C.W. Henderson, S. Bonetti, M.T. Fogli-Muciaccia, O. Erriques, S. Natali, D. Gamba, L. Riccati, F. W. Bullock, A. Pullia, J.L. Guyonnet, M. Rollier, A. Romero, A. Marzari-Chiesa, T. W. Jones, Institut de Recherches Subatomiques (IReS), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Cancéropôle du Grand Est-Université Louis Pasteur - Strasbourg I-Centre National de la Recherche Scientifique (CNRS), and Heyd, Yvette

Subjects
Nuclear physics, Physics, Nuclear and High Energy Physics, Particle physics, Pion, Large Hadron Collider, [PHYS.HEXP] Physics [physics]/High Energy Physics - Experiment [hep-ex], Neutral current, Gargamelle, Isospin, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], Bubble chamber, Weak current
Abstract

Single pion production, in antineutrino-nucleon interactions via the neutral current, has been studied in the bubble chamber Gargamelle, filled with propane. Complete analysis of the secondaries, including π0,s, has allowed a detailed study of all channels. After background and nuclear corrections, results are obtained which can be interpreted in terms of isospin structure of the neutral weak current and of the Salam-Weinberg angle. Agreement is found with the currently accepted value of sin2θW and the data suggest an important contribution of I = 32 final states.

Published
1980

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