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Article
Report number arXiv:1612.08162 ; CERN-EP-2016-323
Title Measurement of the $\pi^0$ electromagnetic transition form factor slope
Author(s)

Lazzeroni, C. (Birmingham U.) ; Lurkin, N. (Birmingham U.) ; Romano, A. (Birmingham U.) ; Blazek, T. (Comenius U.) ; Koval, M. (Comenius U.) ; Ceccucci, A. (CERN) ; Danielsson, H. (CERN) ; Falaleev, V. (CERN) ; Gatignon, L. (CERN) ; Goy Lopez, S. (CERN) ; Hallgren, B. (CERN) ; Maier, A. (CERN) ; Peters, A. (CERN) ; Piccini, M. (CERN) ; Riedler, P. (CERN) ; Frabetti, P.L. (Dubna, JINR) ; Gersabeck, E. (Dubna, JINR) ; Kekelidze, V. (Dubna, JINR) ; Madigozhin, D. (Dubna, JINR) ; Misheva, M. (Dubna, JINR) ; Molokanova, N. (Dubna, JINR) ; Movchan, S. (Dubna, JINR) ; Potrebenikov, Yu. (Dubna, JINR) ; Shkarovskiy, S. (Dubna, JINR) ; Zinchenko, A. (Dubna, JINR) ; Rubin, P. (George Mason U.) ; Baldini, W. (Ferrara U.) ; Cotta Ramusino, A. (Ferrara U.) ; Dalpiaz, P. (Ferrara U.) ; Fiorini, M. (Ferrara U.) ; Gianoli, A. (Ferrara U.) ; Norton, A. (Ferrara U.) ; Petrucci, F. (Ferrara U.) ; Savrié, M. (Ferrara U.) ; Wahl, H. (Ferrara U.) ; Bizzeti, A. (INFN, Florence) ; Bucci, F. (INFN, Florence) ; Iacopini, E. (INFN, Florence) ; Lenti, M. (INFN, Florence) ; Veltri, M. (INFN, Florence) ; Antonelli, A. (Frascati) ; Moulson, M. (Frascati) ; Raggi, M. (Frascati) ; Spadaro, T. (Frascati) ; Eppard, K. (Mainz U., Inst. Phys.) ; Hita-Hochgesand, M. (Mainz U., Inst. Phys.) ; Kleinknecht, K. (Mainz U., Inst. Phys.) ; Renk, B. (Mainz U., Inst. Phys.) ; Wanke, R. (Mainz U., Inst. Phys.) ; Winhart, A. (Mainz U., Inst. Phys.) ; Winston, R. (UC, Merced) ; Bolotov, V. (Moscow, INR) ; Duk, V. (Moscow, INR) ; Gushchin, E. (Moscow, INR) ; Ambrosino, F. (INFN, Naples) ; Di Filippo, D. (INFN, Naples) ; Massarotti, P. (INFN, Naples) ; Napolitano, M. (INFN, Naples) ; Palladino, V. (INFN, Naples) ; Saracino, G. (INFN, Naples) ; Anzivino, G. (Perugia U.) ; Imbergamo, E. (Perugia U.) ; Piandani, R. (Perugia U.) ; Sergi, A. (Perugia U.) ; Cenci, P. (INFN, Perugia) ; Pepe, M. (INFN, Perugia) ; Costantini, F. (Pisa U.) ; Doble, N. (Pisa U.) ; Giudici, S. (Pisa U.) ; Pierazzini, G. (Pisa U.) ; Sozzi, M. (Pisa U.) ; Venditti, S. (Pisa U.) ; Balev, S. (INFN, Pisa ; Pisa, Scuola Normale Superiore) ; Collazuol, G. (INFN, Pisa ; Pisa, Scuola Normale Superiore) ; DiLella, L. (INFN, Pisa ; Pisa, Scuola Normale Superiore) ; Gallorini, S. (INFN, Pisa ; Pisa, Scuola Normale Superiore) ; Goudzovski, E. (INFN, Pisa ; Pisa, Scuola Normale Superiore) ; Lamanna, G. (INFN, Pisa ; Pisa, Scuola Normale Superiore) ; Mannelli, I. (INFN, Pisa ; Pisa, Scuola Normale Superiore) ; Ruggiero, G. (INFN, Pisa ; Pisa, Scuola Normale Superiore) ; Cerri, C. (INFN, Pisa) ; Fantechi, R. (INFN, Pisa) ; Kholodenko, S. (Serpukhov, IHEP) ; Kurshetsov, V. (Serpukhov, IHEP) ; Obraztsov, V. (Serpukhov, IHEP) ; Semenov, V. (Serpukhov, IHEP) ; Yushchenko, O. (Serpukhov, IHEP) ; D'Agostini, G. (INFN, Rome ; Rome U.) ; Leonardi, E. (INFN, Rome) ; Serra, M. (INFN, Rome) ; Valente, P. (INFN, Rome) ; Fucci, A. (INFN, Rome) ; Salamon, A. (INFN, Rome) ; Bloch-Devaux, B. (IRFU, Saclay) ; Peyaud, B. (IRFU, Saclay) ; Engelfried, J. (San Luis Potosi U.) ; Coward, D. (KIPAC, Menlo Park) ; Kozhuharov, V. (Sofiya U.) ; Litov, L. (Sofiya U.) ; Arcidiacono, R. (INFN, Turin ; Turin U.) ; Bifani, S. (INFN, Turin ; Turin U.) ; Biino, C. (INFN, Turin) ; Dellacasa, G. (INFN, Turin) ; Marchetto, F. (INFN, Turin) ; Numao, T. (TRIUMF) ; Retière, F. (TRIUMF)

Publication 2017-05-10
Imprint 2016-12-24
Number of pages 8
Note 12 pages, 7 figures; Revised version accepted for publication in Physics Letters B
In: Phys. Lett. B 768 (2017) 38-45
DOI 10.1016/j.physletb.2017.02.042
Subject category Particle Physics - Experiment ; hep-ex
Accelerator/Facility, Experiment CERN SPS ; NA62
Free keywords flavor physics ; QCD ; rare decay ; experimental results ; pi0 Dalitz decay ; Form Factor ; radiative corrections
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 $\pi^{0}$ electromagnetic transition form factor slope parameter from $1.11\times10^{6}$ fully reconstructed $K^\pm \to \pi^\pm \pi^0_D, \; \pi^0_D \to e^+ e^- \, \gamma$ events is reported. The measured value $a = \left(3.68 \pm 0.57\right)\times 10^{-2}$ 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.
Copyright/License preprint: © 2016-2024 CERN (License: CC-BY-4.0)
publication: © 2017-2024 The Author(s) (License: CC-BY-4.0), sponsored by SCOAP³



Corresponding record in: Inspire
Email contact: brigitte.bloch-devaux@cern.ch


 Journalen skapades 2016-10-28, och modifierades senast 2023-08-03


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