Blind unblinding procedure for the PADME X17 data sample
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arXiv
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| Main Authors: | , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , |
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| Format: | Preprint |
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2025
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| author | Bertelli, Susanna Bossi, Fabio De Sangro, Riccardo Di Giulio, Claudio Di Meco, Elisa Domenici, Danilo Finocchiaro, Giuseppe Foggetta, Luca Gennaro Garattini, Marco Gianotti, Paola Mancini, Marco Sarra, Ivano Spadaro, Tommaso Spiriti, Eleuterio Vilucchi, Elisabetta Kozhuharov, Venelin Dimitrova, Kalina Ivanov, Simeon Ivanov, Svetoslav Simeonov, Radoslav Ferrarotto, Fabio Leonardi, Emanuele Valente, Paolo Variola, Alessandro Long, Elizabeth Organtini, Giovanni Raggi, Mauro Frankenthal, Andre Arias-Aragón, Fernando Darmé, Luc di Cortona, Giovanni Grilli Nardi, Enrico |
| author_facet | Bertelli, Susanna Bossi, Fabio De Sangro, Riccardo Di Giulio, Claudio Di Meco, Elisa Domenici, Danilo Finocchiaro, Giuseppe Foggetta, Luca Gennaro Garattini, Marco Gianotti, Paola Mancini, Marco Sarra, Ivano Spadaro, Tommaso Spiriti, Eleuterio Vilucchi, Elisabetta Kozhuharov, Venelin Dimitrova, Kalina Ivanov, Simeon Ivanov, Svetoslav Simeonov, Radoslav Ferrarotto, Fabio Leonardi, Emanuele Valente, Paolo Variola, Alessandro Long, Elizabeth Organtini, Giovanni Raggi, Mauro Frankenthal, Andre Arias-Aragón, Fernando Darmé, Luc di Cortona, Giovanni Grilli Nardi, Enrico |
| contents | The PADME experiment at the Frascati DA$Φ$NE LINAC has performed a search for the hypothetical X17 particle, with a mass of around 17 MeV, by scanning the energy of a positron beam striking a fixed target. The X17 should be produced from the resulting $e^+e^-$ annihilation. Since the expected mass of this particle is only roughly known, data sidebands cannot be clearly defined. Furthermore, the need to keep the analysis blind to potentially sizable signal contributions prevents a clear assessment even of the quality of the data sample in this search. In light of these challenges, this paper presents an innovative strategy adopted by the PADME Collaboration to perform data quality checks without disclosing the X17 sample. Moreover, the procedure designed to eventually unblind the data is described, together with the statistical approach adopted to extract the limits on the coupling between the X17 and the Standard Model. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2503_05650 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Blind unblinding procedure for the PADME X17 data sample Bertelli, Susanna Bossi, Fabio De Sangro, Riccardo Di Giulio, Claudio Di Meco, Elisa Domenici, Danilo Finocchiaro, Giuseppe Foggetta, Luca Gennaro Garattini, Marco Gianotti, Paola Mancini, Marco Sarra, Ivano Spadaro, Tommaso Spiriti, Eleuterio Vilucchi, Elisabetta Kozhuharov, Venelin Dimitrova, Kalina Ivanov, Simeon Ivanov, Svetoslav Simeonov, Radoslav Ferrarotto, Fabio Leonardi, Emanuele Valente, Paolo Variola, Alessandro Long, Elizabeth Organtini, Giovanni Raggi, Mauro Frankenthal, Andre Arias-Aragón, Fernando Darmé, Luc di Cortona, Giovanni Grilli Nardi, Enrico High Energy Physics - Experiment The PADME experiment at the Frascati DA$Φ$NE LINAC has performed a search for the hypothetical X17 particle, with a mass of around 17 MeV, by scanning the energy of a positron beam striking a fixed target. The X17 should be produced from the resulting $e^+e^-$ annihilation. Since the expected mass of this particle is only roughly known, data sidebands cannot be clearly defined. Furthermore, the need to keep the analysis blind to potentially sizable signal contributions prevents a clear assessment even of the quality of the data sample in this search. In light of these challenges, this paper presents an innovative strategy adopted by the PADME Collaboration to perform data quality checks without disclosing the X17 sample. Moreover, the procedure designed to eventually unblind the data is described, together with the statistical approach adopted to extract the limits on the coupling between the X17 and the Standard Model. |
| title | Blind unblinding procedure for the PADME X17 data sample |
| topic | High Energy Physics - Experiment |
| url | https://arxiv.org/abs/2503.05650 |