The NA62 experiment collected a large sample of charged kaon decays in 2007 with a highly efficient trigger for decays into electrons. A measurement of the π0 electromagnetic transition form factor slope parameter from 1.11×106 fully reconstructed K±→π±πD 0, πD 0→e+e−γ events is reported. The measured value a=(3.68±0.57)×10−2 is in good agreement with theoretical expectations and previous measurements, and represents the most precise experimental determination of the slope in the time-like momentum transfer region.

Measurement of the π 0 electromagnetic transition form factor slope / Lazzeroni, C., Lurkin, N., Romano, A., Blazek, T., Koval, M., Ceccucci, A., Danielsson, H., Falaleev, V., Gatignon, L., Goy Lopez, S., Hallgren, B., Maier, A., Peters, A., Piccini, M., Riedler, P., Frabetti, P.L., Gersabeck, E., Kekelidze, V., Madigozhin, D., Misheva, M., et al.. - In: PHYSICS LETTERS. SECTION B. - ISSN 0370-2693. - 768:(2017), pp. 38-45. [10.1016/j.physletb.2017.02.042]

Measurement of the π 0 electromagnetic transition form factor slope

AMBROSINO, FABIO;DI FILIPPO, DOMENICO;MASSAROTTI, PAOLO;NAPOLITANO, MARCO;PALLADINO, VITO;SARACINO, GIULIO;
2017

Abstract

The NA62 experiment collected a large sample of charged kaon decays in 2007 with a highly efficient trigger for decays into electrons. A measurement of the π0 electromagnetic transition form factor slope parameter from 1.11×106 fully reconstructed K±→π±πD 0, πD 0→e+e−γ events is reported. The measured value a=(3.68±0.57)×10−2 is in good agreement with theoretical expectations and previous measurements, and represents the most precise experimental determination of the slope in the time-like momentum transfer region.
2017
Measurement of the π 0 electromagnetic transition form factor slope / Lazzeroni, C., Lurkin, N., Romano, A., Blazek, T., Koval, M., Ceccucci, A., Danielsson, H., Falaleev, V., Gatignon, L., Goy Lopez, S., Hallgren, B., Maier, A., Peters, A., Piccini, M., Riedler, P., Frabetti, P.L., Gersabeck, E., Kekelidze, V., Madigozhin, D., Misheva, M., et al.. - In: PHYSICS LETTERS. SECTION B. - ISSN 0370-2693. - 768:(2017), pp. 38-45. [10.1016/j.physletb.2017.02.042]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11588/671949
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