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12 results on '"Alberto Bortone"'

1. Measurement of the branching fraction for ψ(3686)→ωKS0KS0

Author

Stefano Spataro, Antonio Amoroso, Ilaria BALOSSINO, Meike Kuessner, Hajime Muramatsu, Michela Greco, Alexey Zhemchugov, Riccardo Farinelli, Riccardo Aliberti, Jens Sören Lange, Patrik Adlarson, Mikhail Achasov, Johan Messchendorp, Ralf Kliemt, Hongrong Qi, Ming-Gang Zhao, Giulio Mezzadri, Alberto Bortone, and Karin Schoenning

Subjects
010308 nuclear & particles physics, 0103 physical sciences, 010306 general physics, 01 natural sciences
Published
2021
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2. Study of the decay Ds+→π+π+π−η and observation of the W -annihilation decay Ds+→a0(980)+ρ0

Author

Stefano Spataro, Antonio Amoroso, Ilaria BALOSSINO, Meike Kuessner, Hajime Muramatsu, Michela Greco, Riccardo Farinelli, Riccardo Aliberti, Wolfgang Gradl, Jens Sören Lange, Patrik Adlarson, Mikhail Achasov, Johan Messchendorp, Ralf Kliemt, Hongrong Qi, Giulio Mezzadri, Alberto Bortone, Fabio Cossio, and Karin Schoenning

Subjects
010308 nuclear & particles physics, 0103 physical sciences, 010306 general physics, 01 natural sciences
Published
2021
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3. Amplitude analysis and branching-fraction measurement of Ds+→KS0K−π+π+

Author

Stefano Spataro, Antonio Amoroso, Ilaria BALOSSINO, Meike Kuessner, Hajime Muramatsu, Michela Greco, Alexey Zhemchugov, Riccardo Farinelli, Riccardo Aliberti, Lia Lavezzi, Jens Sören Lange, Onur Bugra Kolcu, Alfons Khoukaz, Marco Giovanni Maria Destefanis, Patrik Adlarson, Mikhail Achasov, Johan Messchendorp, Ralf Kliemt, Hongrong Qi, Giulio Mezzadri, Alberto Bortone, Fabio Cossio, and Karin Schoenning

Subjects
Nuclear physics, Physics, Amplitude, 010308 nuclear & particles physics, Branching fraction, 0103 physical sciences, Detector, 010306 general physics, Collision, 01 natural sciences
Abstract

Using 6.32 fb−1 of e+e− collision data collected by the BESIII detector at the center-of-mass energies between 4.178 and 4.226 GeV, an amplitude analysis of the D+s → K0SK−π+π+ decays is performed ...

Published
2021
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4. Determination of the Λc+ spin via the reaction e+e−→ΛcΛ¯c

Author

Stefano Spataro, Antonio Amoroso, Ilaria BALOSSINO, Meike Kuessner, Yunxuan Song, Hajime Muramatsu, Michela Greco, Alexey Zhemchugov, Qiang Zhao, Riccardo Farinelli, Riccardo Aliberti, Lia Lavezzi, Jens Sören Lange, Liaoyuan Dong, Francesca De Mori, Onur Bugra Kolcu, Alfons Khoukaz, Yuxiang Zhao, Marco Giovanni Maria Destefanis, Weimin Song, Patrik Adlarson, Mikhail Achasov, Johan Messchendorp, Ralf Kliemt, Hongrong Qi, Peirong Li, Xiang Liu, Giulio Mezzadri, Alberto Bortone, Fabio Cossio, and Karin Schoenning

Subjects
Physics, 010308 nuclear & particles physics, 0103 physical sciences, Atomic physics, 010306 general physics, 01 natural sciences, Spin-½
Abstract

We report on a comparison of two possible Λ+c spin hypotheses, J=½ and 3/2, via the process e+e− → Λ+c¯Λ−c, using the angular distributions of Λ+c decays into pK0S, Λπ+, Σ0π+, and Σ+π0. The data we ...

Published
2021
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5. Search for the semileptonic decay D0(+)→b1(1235)−(0)e+νe

Author

Stefano Spataro, Antonio Amoroso, Ilaria BALOSSINO, Meike Kuessner, Yunxuan Song, Alessio Mangoni, Hajime Muramatsu, Michela Greco, Alexey Zhemchugov, Qiang Zhao, Riccardo Farinelli, Riccardo Aliberti, Yifang Wang, Lia Lavezzi, Jens Sören Lange, Liaoyuan Dong, Francesca De Mori, Onur Bugra Kolcu, Alfons Khoukaz, Yuxiang Zhao, Marco Giovanni Maria Destefanis, Weimin Song, Vindhyawasini Prasad, Banzragch Tsednee, Patrik Adlarson, Mikhail Achasov, Johan Messchendorp, Ralf Kliemt, Hongrong Qi, Peirong Li, Xiang Liu, Giulio Mezzadri, Alberto Bortone, Fabio Cossio, and Karin Schoenning

Subjects
Semileptonic decay, Physics, Particle physics, Annihilation, Physics::Instrumentation and Detectors, 010308 nuclear & particles physics, Detector, 01 natural sciences, law.invention, law, 0103 physical sciences, High Energy Physics::Experiment, 010306 general physics, Collider, Energy (signal processing)
Abstract

Using 2.93 fb−1 of e+e− annihilation data collected at a center-of-mass energy √s=3.773 GeV with the BESIII detector operating at the BEPCII collider, we search for the semileptonic D0(+) decays ...

Published
2020
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6. Improved model-independent determination of the strong-phase difference between D0 and D¯0→KS,L0K+K− decays

Author

Stefano Spataro, Antonio Amoroso, Ilaria BALOSSINO, Meike Kuessner, Yunxuan Song, Alessio Mangoni, Hajime Muramatsu, Michela Greco, Alexey Zhemchugov, Qiang Zhao, Riccardo Farinelli, Anatoliy Guskov, Riccardo Aliberti, Yifang Wang, Lia Lavezzi, Jens Sören Lange, Liaoyuan Dong, Francesca De Mori, Onur Bugra Kolcu, Alfons Khoukaz, Yuxiang Zhao, Marco Giovanni Maria Destefanis, Weimin Song, Krishnakumar Ravindran, Banzragch Tsednee, Patrik Adlarson, Mikhail Achasov, Johan Messchendorp, Ralf Kliemt, Hongrong Qi, Peirong Li, Xiang Liu, Giulio Mezzadri, Alberto Bortone, Fabio Cossio, and Karin Schoenning

Subjects
Phase difference, Physics, Particle physics, Meson, 010308 nuclear & particles physics, Bar (music), High Energy Physics::Phenomenology, 0103 physical sciences, High Energy Physics::Experiment, Charm (quantum number), Nuclear Experiment, 010306 general physics, 01 natural sciences
Abstract

We present a measurement of the strong-phase difference between D-0 and (D) over bar (0) -> (KS,LK+K-)-K-0 decays, performed through a study of quantum-entangled pairs of charm mesons. The measu ...

Published
2020
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7. Inclusive charged and neutral particle multiplicity distributions in χcJ and J/ψ decays

Author

Stefano Spataro, Antonio Amoroso, Ilaria BALOSSINO, Meike Kuessner, Alessio Mangoni, Hajime Muramatsu, Michela Greco, Alexey Zhemchugov, Riccardo Farinelli, Anatoliy Guskov, Yifang Wang, Lia Lavezzi, Jens Sören Lange, Onur Bugra Kolcu, Alfons Khoukaz, Marco Giovanni Maria Destefanis, Vindhyawasini Prasad, Banzragch Tsednee, Patrik Adlarson, Mikhail Achasov, Johan Messchendorp, Ralf Kliemt, Hongrong Qi, Xiang Liu, Giulio Mezzadri, Alberto Bortone, Tord Johansson, Fabio Cossio, and Karin Schoenning

Subjects
Physics, Particle physics, 010308 nuclear & particles physics, Astrophysics::High Energy Astrophysical Phenomena, 0103 physical sciences, High Energy Physics::Experiment, Multiplicity (chemistry), 010306 general physics, Neutral particle, 01 natural sciences
Abstract

Using a sample of 106 million psi(3686) decays, psi(3686) -> gamma chi(cJ) (J = 0, 1, 2) and psi(3686) -> gamma chi(cJ), chi(cJ) -> gamma J/psi (J = 1, 2) events are utilized to study incl ...

Published
2020
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8. Observation of the Y(4220) and Y(4390) in the process e+e−→ηJ/ψ

Author

Stefano Spataro, Antonio Amoroso, Ilaria BALOSSINO, Meike Kuessner, Yunxuan Song, Alessio Mangoni, Hajime Muramatsu, Xin Shi, Michela Greco, Alexey Zhemchugov, Qiang Zhao, Riccardo Farinelli, Anatoliy Guskov, Yifang Wang, Lia Lavezzi, Jens Sören Lange, Liaoyuan Dong, Francesca De Mori, Onur Bugra Kolcu, Alfons Khoukaz, Yuxiang Zhao, Marco Giovanni Maria Destefanis, Weimin Song, Banzragch Tsednee, Patrik Adlarson, Mikhail Achasov, Johan Messchendorp, Ralf Kliemt, Hongrong Qi, Peirong Li, Xiang Liu, Giulio Mezzadri, Alberto Bortone, Fabio Cossio, and Karin Schoenning

Subjects
Physics, 010308 nuclear & particles physics, 0103 physical sciences, Analytical chemistry, High Energy Physics::Experiment, Nuclear Experiment, 010306 general physics, 01 natural sciences
Abstract

The cross sections of the process e(+)e(-) -> eta J/psi lip at center-of-mass energies (root s) between 3.81 and 4.60 GeV are measured with high precision by using data samples collected with th ...

Published
2020
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9. Study of the process e+e−→π0π0J/ψ and neutral charmoniumlike state Zc(3900)0

Author

Stefano Spataro, Peilian Li, Antonio Amoroso, Ilaria BALOSSINO, Meike Kuessner, Hajime Muramatsu, Michela Greco, Alexey Zhemchugov, Riccardo Farinelli, Anatoliy Guskov, Yifang Wang, Lia Lavezzi, Jens Sören Lange, Onur Bugra Kolcu, Alfons Khoukaz, Marco Giovanni Maria Destefanis, Banzragch Tsednee, Patrik Adlarson, Mikhail Achasov, Johan Messchendorp, Ralf Kliemt, Hongrong Qi, Xiang Liu, Alberto Bortone, Fabio Cossio, and Karin Schoenning

Subjects
Physics, 010308 nuclear & particles physics, 0103 physical sciences, Pi, Analytical chemistry, State (functional analysis), 010306 general physics, 7. Clean energy, 01 natural sciences, 3. Good health
Abstract

Cross sections of the process e(+)e(-) -> pi(0)pi(0)J/psi at center-of-mass energies between 3.808 and 4.600 GeV are measured with high precision by using 12.4 fb(-1) of data samples collected w ...

Published
2020
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10. Measurement of the Born cross sections for e+e−→Ds+Ds1(2460)−+c.c. and e+e−→Ds*+Ds1(2460)−+c.c

Author

Stefano Spataro, Antonio Amoroso, Ilaria BALOSSINO, Meike Kuessner, Alessio Mangoni, Hongbang Liu, Hajime Muramatsu, Xin Shi, Michela Greco, Alexey Zhemchugov, Riccardo Farinelli, Anatoliy Guskov, Yifang Wang, Lia Lavezzi, Jens Sören Lange, Onur Bugra Kolcu, Nils Huesken, Alfons Khoukaz, Marco Giovanni Maria Destefanis, Banzragch Tsednee, Kamal Saoucha, Patrik Adlarson, Mikhail Achasov, Johan Messchendorp, Ralf Kliemt, Hongrong Qi, Xiang Liu, Giulio Mezzadri, Alberto Bortone, Fabio Cossio, and Karin Schoenning

Subjects
Physics, 010308 nuclear & particles physics, 0103 physical sciences, Analytical chemistry, 010306 general physics, 01 natural sciences
Abstract

The processes e(+)e(-) -> D-s(+) D-s1 (2460)(-) + c.c. and e(+) e(-) -> D-s*(+) D-s1 (2460)(-)+ c.c. are studied for the first time using data samples collected with the BESIII detector at th ...

Published
2020
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11. A Fit to the Available e+e− → Λc+Λ¯c− Cross Section Data Nearby Production Threshold by Means of a Strong Correction to the Coulomb Enhancement Factor

Author

M. Maggiora, Giulio Mezzadri, Elisabetta Pace, Luciano Gaido, Stefano Gramigna, M. Destefanis, G. Felici, Fabrizio Bianchi, Monica Bertani, S. Spataro, Isabella Garzia, L. Lavezzi, D. Bettoni, Stefano Lusso, Ilaria Balossino, A. Calcaterra, Marco Scodeggio, S. Pacetti, Sara Morgante, S. Bagnasco, Riccardo Farinelli, Piero Patteri, A. Amoroso, Luciano Fava, Angelo Rivetti, Francesca De Mori, Alessio Mangoni, Alberto Bortone, Gianluigi Cibinetto, M. Rolo, F. Cossio, M. Greco, Rinaldo Baldini Ferroli, S. Marcello, and Stefano Sosio

Subjects
Physics, 010308 nuclear & particles physics, Strong interaction, General Physics and Astronomy, State (functional analysis), Radiation, 01 natural sciences, Resonance (particle physics), Nuclear physics, Cross section (physics), Hadron spectroscopy, 0103 physical sciences, Coulomb, 010306 general physics, Energy (signal processing)
Abstract

There are two available sets of data on the e+e−→Λc+Λ¯c− cross section at energies close to the production threshold, collected by the Belle and by the BESIII Collaborations. The measurement of the former, performed by means of the initial state radiation technique, is compatible with the presence of a resonance, called ψ(4660), observed also in other final states. On the contrary, the latter is measured an almost flat and hence non-resonant cross section in the energy region just above the production threshold, but the data stop before the possible rise in the cross section for the resonant production. We propose an effective model to describe the behavior of the data near this threshold, which is based on a Coulomb-like enhancement factor due to the strong interaction among the final state particles. In the framework of this model, it is possible to describe both datasets.

Published
2021
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12. Expected number of Extensive Air Showers observable by EUSO-SPB

Author

Naoto Sakaki, Austin Cummings, Mario E. Bertaina, Andrea Veneziani, Alberto Bortone, Simone Cambursano, and Francesco Fenu

Subjects
business.industry, media_common.quotation_subject, Detector, Cosmic ray, Observable, Universe, Atmosphere, Air shower, Pathfinder, Environmental science, Aerospace engineering, business, Optical depth, media_common
Abstract

EUSO-SPB (Extreme Universe Space Observatory - Super Pressure Balloon) is the first path- finder mission of the JEM-EUSO program aiming at the detection of the fluorescence light emitted by Extensive Air Shower (EAS) produced by cosmic ray particles in the atmosphere. EUSO–SPB has flown in Spring 2017 from the Wanaka base in New Zealand on board a NASA Super Pressure Balloon planning to reach up to a 100 days of flight, giving, therefore, the opportunity to observe for the first time a bunch of cosmic ray events with the fluorescence technique from the edge of space. By means of the ESAF (EUSO Simulation and Analysis Framework) package, which is one of the official simulation tools to study the performance of the different pathfinder missions of the JEM-EUSO program, prior to flight, extensive simulations have been carried out to determine the expected number of detectable events as a function of several parameters related to the detector performance itself (i.e. trigger logic, optics and electronics efficiency), to the different environmental conditions (i.e. night-glow level, presence of clouds at different heights with variable optical depth) as well as to the launch season and duration of the flight. The main results of these simulation studies are presented.

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