Search

Your search keyword '"Pedroni, Paolo"' showing total 163 results
Start Over Author "Pedroni, Paolo"
163 results on '"Pedroni, Paolo"'

1. The Gerasimov-Drell-Hearn sum-rule with nuclear targets

Author

Bass, Steven D., Pedroni, Paolo, and Thomas, Andreas

Subjects
Nuclear Theory, High Energy Physics - Phenomenology, Nuclear Experiment
Abstract

Hadron properties are modified when the hadron is embedded in a nuclear medium. Here we discuss the Gerasimov-Drell-Hearn, GDH, sum rule for polarised photoproduction from a polarised nucleon within a polarised nuclear target. Strong enhancement is expected with the suppression of the proton and nucleon resonance masses and enhancement of the proton's anomalous magnetic moment in medium. This could be tested in polarised photoproduction experiments with interesting targets being polarised deuterons, $^3$He, $^6$Li and $^7$Li. The largest contribution to the GDH sum rule comes from the $\Delta$ resonance excitation. In existing data with polarised deuterons and $^3$He the $\Delta$ excitation is shifted to slightly lower energy when compared to model predictions where the $\Delta$ is treated with its free mass., Comment: 10 pages, 3 Figures, to appear in the European Physical Journal A

Published
2022
Full Text
View/download PDF

3. Strangeness photoproduction at the BGO-OD experiment

Author

Scheluchin, Georg, Alef, Stefan, Bauer, Patrick, Beck, Reinhard, Braghieri, Alessandro, Cole, Philip, Di Salvo, Rachele, Elsner, Daniel, Fantini, Alessia, Freyermuth, Oliver, Ghio, Francesco, Gridnev, Anatoly, Hammann, Daniel, Hannappel, Jürgen, Jude, Thomas, Kohl, Katrin, Kozlenko, Nikolay, Lapik, Alexander, Sandri, Paolo Levi, Lisin, Valery, Mandaglio, Giuseppe, Messi, Roberto, Moricciani, Dario, Nedorezov, Vladimir, Novinsky, Dmitry, Pedroni, Paolo, Polonski, Andrei, Reitz, Björn-Eric, Romaniuk, Mariia, Schmieden, Hartmut, Sumachev, Victorin, Tarakanov, Viacheslav, and Tillmanns, Christian

Subjects
Nuclear Experiment
Abstract

The BGO-OD experiment at the University of Bonn's ELSA accelerator facility in Germany is ideally suited to investigate photoproduction at extreme forward angles. It combines a highly segmented BGO electromagnetic calorimeter at central angles and an open dipole magnetic spectrometer in the forward direction. This allows the detection of forward going kaons, and complex final states of mixed charge from hyperon decays. Current projects at the BGO-OD experiment include strangeness production of $\gamma p \rightarrow K^+ \Lambda/\Sigma^0$ at forward angles, $K^0\Sigma^0$ with a deuteron target and $K^+\Lambda(1405)$ line shape and cross section measurements., Comment: Contribution to the proceedings of "HADRON2019: 18th International Conference on Hadron Spectroscopy and Structure", limited to 5 pages

Published
2020

4. $K^+\Lambda$(1405) photoproduction at the BGO-OD experiment

Author

Scheluchin, Georg, Alef, Stefan, Bauer, Patrick, Beck, Reinhard, Braghieri, Alessandro, Cole, Philip, Di Salvo, Rachele, Elsner, Daniel, Fantini, Alessia, Freyermuth, Oliver, Ghio, Francesco, Gridnev, Anatoly, Hammann, Daniel, Hannappel, Jürgen, Jude, Thomas, Kohl, Katrin, Kozlenko, Nikolay, Lapik, Alexander, Sandri, Paolo Levi, Lisin, Valery, Mandaglio, Giuseppe, Messi, Roberto, Moricciani, Dario, Nedorezov, Vladimir, Novinsky, Dmitry, Pedroni, Paolo, Polonski, Andrei, Reitz, Björn-Eric, Romaniuk, Mariia, Schmieden, Hartmut, Sumachev, Victorin, Tarakanov, Viacheslav, and Tillmanns, Christian

Subjects
Nuclear Experiment
Abstract

Since the discovery of the $\Lambda(1405)$, it remains poorly described by conventional constituent quark models, and it is a candidate for having an "exotic" meson-baryon or "penta-quark" structure, similar to states recently reported in the hidden charm sector. The $\Lambda(1405)$ can be produced in the reaction $\gamma p \rightarrow K^+\Lambda(1405)$. The pure I=0 decay mode into $\Sigma^0\pi^0$ is prohibited for the mass-overlapping $\Sigma(1385)$. Combining a large aperture forward magnetic spectrometer and a central BGO crystal calorimeter, the BGO-OD experiment is ideally suited to measure this decay with the $K^+$ in the forward direction. Preliminary results are presented. *Supported by DFG (PN 388979758, 405882627)., Comment: Contribution to the proceedings of "NSTAR2019: 12th International Workshop on the Physics of Excited Nucleons"

Published
2020

9. Monte Carlo Methods

Author

Rotondi, Alberto, Pedroni, Paolo, Pievatolo, Antonio, Rotondi, Alberto, Pedroni, Paolo, and Pievatolo, Antonio

Published
2022
Full Text
View/download PDF

11. Least Squares

Author

Rotondi, Alberto, Pedroni, Paolo, Pievatolo, Antonio, Rotondi, Alberto, Pedroni, Paolo, and Pievatolo, Antonio

Published
2022
Full Text
View/download PDF

14. Probability

Author

Rotondi, Alberto, Pedroni, Paolo, Pievatolo, Antonio, Rotondi, Alberto, Pedroni, Paolo, and Pievatolo, Antonio

Published
2022
Full Text
View/download PDF

17. The BGOOD experiment at ELSA, exotic structures in the light quark sector?

Author

Jude Thomas, Braghieri Alessandro, Cole Philip, Eisner Daniel, Di Salvo Rachele, Fantini Alessia, Figueiredo Antonio Joao Clara, Freyermuth Oliver, Fromberger Frank, Ghio Francesco, Groß Johannes, Kohl Katrin, Levi Sandri Paolo, Mandaglio Guiseppe, Pedroni Paolo, Romaniuk Mariia, Scheluchin Georg, Schmieden Hartmut, and Sonnenschein Adrian

Subjects
Physics, QC1-999
Abstract

The BGOOD photoproduction experiment accesses forward meson angles and low momentum exchange kinematics in the uds sector, which may be sensitive to molecular-like hadron structure. Recent results are presented, including strangeness photoproduction at forward meson angles, and π0π0 co herent photoproduction off the deuteron.

Published
2024
Full Text
View/download PDF

18. A new Monte Carlo-based fitting method

Author

Pedroni, Paolo and Sconfietti, Stefano

Subjects
Physics - Data Analysis, Statistics and Probability, High Energy Physics - Experiment, High Energy Physics - Phenomenology, Nuclear Experiment, Nuclear Theory
Abstract

We present a new fitting technique based on the parametric bootstrap method, which relies on the idea to produce artificial measurements using the estimated probability distribution of the experimental data. In order to investigate the main properties of this technique, we develop a toy model and we analyze several fitting conditions with a comparison of our results to the ones obtained using both the standard $\chi^2$ minimization procedure and a Bayesian approach. Furthermore, we investigate the effect of the data systematic uncertainties both on the probability distribution of the fit parameters and on the shape of the expected goodness-of-fit distribution. Our conclusion is that, when systematic uncertainties are included in the analysis, only the bootstrap procedure is able to provide reliable confidence intervals and p-values, thus improving the results given by the standard $\chi^2$ minimization approach. Our technique is then applied to an actual physics process, the real Compton scattering off the proton, thus confirming both the portability and the validity of the bootstrap-based fit method., Comment: 27 pages, 20 figures, 7 tables; final version accepted for publication in J. Phys.G

Published
2019
Full Text
View/download PDF

24. Minimi quadrati

Author

Rotondi, Alberto, Pedroni, Paolo, Pievatolo, Antonio, Rotondi, Alberto, Pedroni, Paolo, and Pievatolo, Antonio

Published
2021
Full Text
View/download PDF

28. La probabilità

Author

Rotondi, Alberto, Pedroni, Paolo, Pievatolo, Antonio, Rotondi, Alberto, Pedroni, Paolo, and Pievatolo, Antonio

Published
2021
Full Text
View/download PDF

33. The BGOOD experiment at ELSA Exotic structures in the strange quark sector?

Author

Jude Thomas, Alef Stefan, Beck Reinhard, Braghieri Alessandro, Cole Philip, Di Salvo Rachele, Elsner Daniel, Fantini Alessia, Freyermuth Oliver, Fromberger Frank, Ghio Francesco, Groß Johannes, Kohl Katrin, Levi Sandri Paolo, Mandaglio Guiseppe, Pedroni Paolo, Romaniuk Mariia, Scheluchin Georg, and Schmieden Hartmut

Subjects
Physics, QC1-999
Abstract

The BGOOD photoproduction experiment accesses forward meson angles and low momentum exchange kinematics in the uds sector, which may be sensitive to molecular-like hadronic structure. Recent highlights are summarised in these proceedings.

Published
2022
Full Text
View/download PDF

34. Inferenza statistica e verosimiglianza

Author

Rotondi, Alberto, Pedroni, Paolo, Pievatolo, Antonio, Battaglia, F., editor, Carota, C., editor, Conti, P. L., editor, Piccinato, L., editor, Riani, M., editor, Rotondi, Alberto, Pedroni, Paolo, and Pievatolo, Antonio

Published
2012
Full Text
View/download PDF

35. Applicazioni del metodo Monte Carlo

Author

Rotondi, Alberto, Pedroni, Paolo, Pievatolo, Antonio, Battaglia, F., editor, Carota, C., editor, Conti, P. L., editor, Piccinato, L., editor, Riani, M., editor, Rotondi, Alberto, Pedroni, Paolo, and Pievatolo, Antonio

Published
2012
Full Text
View/download PDF

36. Il metodo Monte Carlo

Author

Rotondi, Alberto, Pedroni, Paolo, Pievatolo, Antonio, Battaglia, F., editor, Carota, C., editor, Conti, P. L., editor, Piccinato, L., editor, Riani, M., editor, Rotondi, Alberto, Pedroni, Paolo, and Pievatolo, Antonio

Published
2012
Full Text
View/download PDF

37. Calcolo delle probabilità per più variabili

Author

Rotondi, Alberto, Pedroni, Paolo, Pievatolo, Antonio, Battaglia, F., editor, Carota, C., editor, Conti, P. L., editor, Piccinato, L., editor, Riani, M., editor, Rotondi, Alberto, Pedroni, Paolo, and Pievatolo, Antonio

Published
2012
Full Text
View/download PDF

38. Statistica di base

Author

Rotondi, Alberto, Pedroni, Paolo, Pievatolo, Antonio, Battaglia, F., editor, Carota, C., editor, Conti, P. L., editor, Piccinato, L., editor, Riani, M., editor, Rotondi, Alberto, Pedroni, Paolo, and Pievatolo, Antonio

Published
2012
Full Text
View/download PDF

39. Funzioni di variabili aleatorie

Author

Rotondi, Alberto, Pedroni, Paolo, Pievatolo, Antonio, Battaglia, F., editor, Carota, C., editor, Conti, P. L., editor, Piccinato, L., editor, Riani, M., editor, Rotondi, Alberto, Pedroni, Paolo, and Pievatolo, Antonio

Published
2012
Full Text
View/download PDF

40. Calcolo elementare delle probabilità

Author

Rotondi, Alberto, Pedroni, Paolo, Pievatolo, Antonio, Battaglia, F., editor, Carota, C., editor, Conti, P. L., editor, Piccinato, L., editor, Riani, M., editor, Rotondi, Alberto, Pedroni, Paolo, and Pievatolo, Antonio

Published
2012
Full Text
View/download PDF

41. Analisi dei dati sperimentali

Author

Rotondi, Alberto, Pedroni, Paolo, Pievatolo, Antonio, Battaglia, F., editor, Carota, C., editor, Conti, P. L., editor, Piccinato, L., editor, Riani, M., editor, Rotondi, Alberto, Pedroni, Paolo, and Pievatolo, Antonio

Published
2012
Full Text
View/download PDF

42. Rappresentazione dei fenomeni aleatori

Author

Rotondi, Alberto, Pedroni, Paolo, Pievatolo, Antonio, Battaglia, F., editor, Carota, C., editor, Conti, P. L., editor, Piccinato, L., editor, Riani, M., editor, Rotondi, Alberto, Pedroni, Paolo, and Pievatolo, Antonio

Published
2012
Full Text
View/download PDF

43. Minimi quadrati

Author

Rotondi, Alberto, Pedroni, Paolo, Pievatolo, Antonio, Battaglia, F., editor, Carota, C., editor, Conti, P. L., editor, Piccinato, L., editor, Riani, M., editor, Rotondi, Alberto, Pedroni, Paolo, and Pievatolo, Antonio

Published
2012
Full Text
View/download PDF

44. La probabilità

Author

Rotondi, Alberto, Pedroni, Paolo, Pievatolo, Antonio, Battaglia, F., editor, Carota, C., editor, Conti, P. L., editor, Piccinato, L., editor, Riani, M., editor, Rotondi, Alberto, Pedroni, Paolo, and Pievatolo, Antonio

Published
2012
Full Text
View/download PDF

46. La probabilità

Author

Rotondi, Alberto, Pedroni, Paolo, Pievatolo, Antonio, Rotondi, Alberto, Pedroni, Paolo, and Pievatolo, Antonio

Published
2005
Full Text
View/download PDF

Catalog

Books, media, physical & digital resources
See catalog results