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5 results on '"J.J. Valiente-Dobon"'

1. Preface

Author

S. Lunardi, P.G. Bizzeti, C. Bucci, M. Chiari, A. Dainese, P. Di Nezza, R. Menegazzo, A. Nannini, C. Signorini, and J.J. Valiente-Dobon

Subjects
Physics, QC1-999
Published
2014

2. Dalitz Plot analysis for η → π+π-π0 at KLOE

Author

R. Menegazzo, Andrea Dainese, A. Nannini, P. Di Nezza, P. G. Bizzeti, J.J. Valiente-Dobon, Massimo Chiari, L. Caldeira Balkeståhl, S. Lunardi, C. Bucci, and C. Signorini

Subjects
Physics, QC1-999
Abstract

We present the status of an ongoing analysis of the η → π+π−π0 Dalitz plot, as well as preliminary results for the Dalitz plot parameters. The analysis is based on data taken at the DAΦNE φ-factory with the KLOE detector.

Published
2014

3. Identification of intruderπi13/2state in197Tl

Author

J.J. Valiente-Dobon, S. Mukhopadhyay, S. Rajbanshi, Srijit Bhattacharya, T. Bhattacharjee, G. Mukherjee, Massimo Chiari, P. G. Bizzeti, Surajit Pal, R. Menegazzo, M. Gohil, C. Signorini, J. K. Meena, H. Pai, Deepak Pandit, A. Nannini, P. Mukhopadhyay, S. Lunardi, T. K. Ghosh, K. Banerjee, R. Pandey, Andrea Dainese, P. Di Nezza, C. Bucci, S. Kundu, G. Prajapati, T. K. Rana, S. Bhattacharyya, S.R. Banerjee, A. Choudhury, Avijit Goswami, C. Bhattacharya, and S. Chanda

Subjects
Physics, QC1-999, Identification (biology), Computational biology, Nuclear Experiment
Abstract

The high-spin states in 197Tl were studied by populating them using the 197Au(α, 4n)197 Tl reaction at 48 MeV of beam energy. γ−γ coincidence data were taken using a combination of clover, LEPS (low energy photon spectrometer) and single crystal HPGe detectors. The polarization and DCO measurements were performed for definite spin and parity assignment of the excited states. The πi13/2 intruder state has been identified for the first time in this nucleus. The total Routhian surface calculations have been performed to study the shape and deformation of 197Tl for different configurations.

Published
2014
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4. Kaon Tagging at 0° Scattering Angle for High-Resolution Decay-Pion Spectroscopy

Author

Patrick Achenbach, Joerg Reinhold, Osamu Hashimoto, Salvador Sánchez Majos, Liguang Tang, B. S. Schlimme, O. Borodina, Concettina Sfienti, V. Bozkurt, Sho Nagao, R. Böhm, T. R. Saito, Simon Širca, Alicia Sanchez Lorente, F. Schulz, Junichiro Kusaka, Naoki Arai, U. Müller, Josef Pochodzalla, Kazushige Maeda, Kyo Tsukada, Carlos Ayerbe Gayoso, L. Debenjak, Anselm Esser, Y. Fujii, Amur Margaryan, Toshiyuki Gogami, E. Kim, Mar Gómez Rodríguez, Masashi Kaneta, Damir Bosnar, C. Rappold, M. Schoth, Hiroki Kanda, Satoshi Nakamura, M. O. Distler, Michaela Thiel, Harald Merkel, S. Hirose, Ivica Friščić, and S. Lunardi, P.G. Bizzeti, Sonia Kabana, C. Bucci, M. Chiari, A. Dainese, P. Di Nezza, R. Menegazzo, A. Nannini, C. Signorini and J.J. Valiente‐Dobon

Subjects
Physics, Particle physics, Spectrometer, Scattering, QC1-999, Nuclear Theory, Bremsstrahlung, Strangeness production, Nuclear physics, Momentum, Pion, Pair production, Electron Scattering, Hypernuclei, MAMI, KAOS, Decay-Pion Spectroscopy, High Energy Physics::Experiment, Nuclear Experiment, Microtron
Abstract

At the Mainz Microtron hypernuclei can be studied by (e,e'K) reactions. By detecting the kaon which is emitted in forward direction, with the KAOS spectrometer placed at 0 scattering angle, reactions involving open strangeness production are tagged. High-resolution magnetic spectrometers are then used to coincidentally detect the mono- energetic decay-pions from mesonic two-body weak decays of light hypernuclei at rest. As a pioneering experiment has confirmed, the KAOS spectrometer is exposed to a large flux of background particles, mostly positrons from bremsstrahlung pair production. In order to increase the e ciency of kaon identification the KAOS spectrometer was modi- fied to suppress background particles at the cost of a high momentum resolution, which is less important for this experiment. This was achieved by placing up to 14 cm of lead absorbers in front of the detectors, in which positrons are blocked by forming electro- magnetic showers while the e ect on kaons is limited. An additional time-of-flight wall and a new threshold ˘ Cerenkov detector help to increase the detection e ciency of kaons.

Published
2014

5. Transfer reactions on light exotic nuclei studied with CHIMERA detector at LNS

Author

G. Cardella, L. Acosta, F. Amorini, L. Auditore, I. Berceanu, M. Buscemi, M. B. Chatterjiee, E. DeFilippo, L. Francalanza, R. Gianì, L. Grassi, E. La Guidara, G. Lanzalone, D. Loria, T. Minniti, A. Pagano, E. V. Pagano, M. Papa, S. Pirrone, G. Politi, A. Pop, F. Porto, F. Rizzo, P. Russotto, S. Santoro, A. Trifiró, M. Trimarchi, G. Verde, LOMBARDO, IVANO, ROSATO, ELIO, VIGILANTE, MARIANO, S. Lunardi, P.G. Bizzeti, C. Bucci, M. Chiari, A. Dainese, P. Di Nezza, R. Menegazzo, A. Nannini, C. Signorini, J.J. Valiente-Dobon, G., Cardella, L., Acosta, F., Amorini, L., Auditore, I., Berceanu, M., Buscemi, M. B., Chatterjiee, E., Defilippo, L., Francalanza, R., Gianì, L., Grassi, E., La Guidara, G., Lanzalone, Lombardo, Ivano, D., Loria, T., Minniti, A., Pagano, E. V., Pagano, M., Papa, S., Pirrone, G., Politi, A., Pop, F., Porto, F., Rizzo, Rosato, Elio, P., Russotto, S., Santoro, A., Trifiró, M., Trimarchi, G., Verde, Vigilante, Mariano, Cardella, G., Acosta, L., Amorini, F., Auditore, L., Berceanu, I., Chatterjiee, M., Defilippo, E., Francalanza, L., Gianì, R., Grassi, L., La Guidara, E., Lanzalone, G., Lombardo, I., Loria, D., Minniti, T., Pagano, A., Pagano, E., Papa, M., Pirrone, S., Politi, G., Pop, A., Porto, F., Rizzo, F., Rosato, E., Russotto, P., Santoro, S., Trifirò, A., Trimarchi, M., Verde, G., and Vigilante, M.

Subjects
Physics, Elastic scattering, education.field_of_study, QC1-999, Population, Resolution (electron density), Nuclear reaction, Coincidence, Spectral line, Physics and Astronomy (all), Transfer reactions, Excited state, Center of mass, Atomic physics, education, Beam (structure)
Abstract

The kinematical coincidence method is used to extract angular distribution of elastic scattering and transfer reactions. The detected light particle energy spectra are used to extract the angular distribution with around 1° resolution in the Center of Mass (CM) system. Examples with 10Be beam are presented. In the case of proton scattering, γ-ray coincidences are used to discriminate excited levels population from elastic scattering. © Owned by the authors, published by EDP Sciences, 2014.

Published
2014

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