ChPT tests at the NA48 and NA62 experiments at CERN

Madigozhin, Dmitry; Riedler, P.; Goudzovski, E.; Cundy, D.; Cartiglia, N.; Lazzeroni, C.; Mazzucato, E.; Dellacasa, G.; Valente, P.; Calvetti, M.; Doble, N.; Danielsson, H.; Saracino, G.; D'Agostini, G.; Coward, D.; Maier, A.; Fiorini, L.; Dibon, H.; Scarpa, M.; Hristov, P.; Misheva, M.; Fonseca Martin, T.; Gallorini, S.; Kleinknecht, K.; Derré, J.; Ruggiero, G.; Cheshkov, C.; Kubischta, W.; Costantini, F.; DiLella, L.; Giudici, S.; Monnier, E.; De Beer, M.; Norton, A.; Numao, T.; Dalpiaz, P.; Goy Lopez, S.; Gushchin, E.; Behler, M.; Veltri, M.; Duk, V.; Swallow, E.; Pepe, M.; Peyaud, B.; Bucci, F.; Gonidec, A.; Michetti, A.; Kurshetsov, V.; Biino, C.; Hita-Hochgesand, M.; Romano, A.; Fidecaro, M.; Gersabeck, E.; Walker, A.; Mannelli, I.; Martini, M.; Szleper, M.; Popov, I.; Antonelli, A.; Shieh, M.; Winhart, A.; Eppard, K.; Anzivino, G.; Raggi, M.; Iacopini, E.; Palladino, V.; Kozhuharov, V.; Engelfried, J.; Wotton, S.A.; Lamanna, G.; Holder, M.; Marchetto, F.; Cotta Ramusino, A.; Di Filippo, D.; Ceccucci, A.; Fiorini, M.; Moulson, M.; Wahl, H.; Winston, R.; Retière, F.; Yushchenko, O.; Molokanova, N.; Mikulec, I.; Marel, G.; Piandani, R.; Frabetti, P.L.; Obraztsov, V.; Massarotti, P.; Semenov, V.; Imbergamo, E.; Wache, M.; Markytan, M.; Ambrosino, F.; Peters, A.; Spadaro, T.; Movchan, S.; Vallage, B.; Piccini, M.; Bifani, S.; Wanke, R.; Slater, M.W.; Bolotov, V.; Polenkevich, I.; Stoynev, S.; Valdata-Nappi, M.; Gatignon, L.; Cabibbo, N.; Litov, L.; Shkarovskiy, S.; Zinchenko, A.; Munday, D.J.; Nappi, A.; Kalmus, G.; Moosbrugger, U.; Collazuol, G.; Pierazzini, G.; Marouelli, P.; Salamon, A.; Petrucci, F.; Bloch-Devaux, B.; Velasco, M.; Balev, S.; Sozzi, M.; Gianoli, A.; Patel, M.; Renk, B.; Damiani, C.; Bocquet, G.; Baldini, W.; Neuhofer, G.; Cenci, P.; Leonardi, E.; Cerri, C.; Jeitler, M.; Serra, M.; Wood, M.D.; Napolitano, M.; Falaleev, V.; Petrucci, M.C.; Lenti, M.; Kekelidze, V.; Morales Morales, C.; Masetti, L.; Clemencic, M.; Potrebenikov, Yu.; Dabrowski, A.; Fucci, A.; Fantechi, R.; Bizzeti, A.; Sergi, A.; Chèze, J.B.; Arcidiacono, R.; Rubin, P.; Ziolkowski, M.; Venditti, S.; Savrié, M.; Hallgren, B.; Batley, J.R.; Widhalm, L.

doi:10.22323/1.223.0022

Article
Report number	arXiv:1601.08014
Title	ChPT tests at the NA48 and NA62 experiments at CERN
Author(s)	Madigozhin, Dmitry (Dubna, JINR) ; Ambrosino, F. ; Antonelli, A. ; Anzivino, G. ; Arcidiacono, R. ; Baldini, W. ; Balev, S. ; Batley, J.R. ; Behler, M. ; Bifani, S. ; Biino, C. ; Bizzeti, A. ; Bloch-Devaux, B. ; Bocquet, G. ; Bolotov, V. ; Bucci, F. ; Cabibbo, N. ; Calvetti, M. ; Cartiglia, N. ; Ceccucci, A. ; Cenci, P. ; Cerri, C. ; Cheshkov, C. ; Chèze, J.B. ; Clemencic, M. ; Collazuol, G. ; Costantini, F. ; Cotta Ramusino, A. ; Coward, D. ; Cundy, D. ; Dabrowski, A. ; D'Agostini, G. ; Dalpiaz, P. ; Damiani, C. ; Danielsson, H. ; De Beer, M. ; Dellacasa, G. ; Derré, J. ; Dibon, H. ; Di Filippo, D. ; DiLella, L. ; Doble, N. ; Duk, V. ; Engelfried, J. ; Eppard, K. ; Falaleev, V. ; Fantechi, R. ; Fidecaro, M. ; Fiorini, L. ; Fiorini, M. ; Fonseca Martin, T. ; Frabetti, P.L. ; Fucci, A. ; Gallorini, S. ; Gatignon, L. ; Gersabeck, E. ; Gianoli, A. ; Giudici, S. ; Gonidec, A. ; Goudzovski, E. ; Goy Lopez, S. ; Gushchin, E. ; Hallgren, B. ; Hita-Hochgesand, M. ; Holder, M. ; Hristov, P. ; Iacopini, E. ; Imbergamo, E. ; Jeitler, M. ; Kalmus, G. ; Kekelidze, V. ; Kleinknecht, K. ; Kozhuharov, V. ; Kubischta, W. ; Kurshetsov, V. ; Lamanna, G. ; Lazzeroni, C. ; Lenti, M. ; Leonardi, E. ; Litov, L. ; Maier, A. ; Mannelli, I. ; Marchetto, F. ; Marel, G. ; Markytan, M. ; Marouelli, P. ; Martini, M. ; Masetti, L. ; Massarotti, P. ; Mazzucato, E. ; Michetti, A. ; Mikulec, I. ; Misheva, M. ; Molokanova, N. ; Monnier, E. ; Moosbrugger, U. ; Morales Morales, C. ; Moulson, M. ; Movchan, S. ; Munday, D.J. ; Napolitano, M. ; Nappi, A. ; Neuhofer, G. ; Norton, A. ; Numao, T. ; Obraztsov, V. ; Palladino, V. ; Patel, M. ; Pepe, M. ; Peters, A. ; Petrucci, F. ; Petrucci, M.C. ; Peyaud, B. ; Piandani, R. ; Piccini, M. ; Pierazzini, G. ; Polenkevich, I. ; Popov, I. ; Potrebenikov, Yu. ; Raggi, M. ; Renk, B. ; Retière, F. ; Riedler, P. ; Romano, A. ; Rubin, P. ; Ruggiero, G. ; Salamon, A. ; Saracino, G. ; Savrié, M. ; Scarpa, M. ; Semenov, V. ; Sergi, A. ; Serra, M. ; Shieh, M. ; Shkarovskiy, S. ; Slater, M.W. ; Sozzi, M. ; Spadaro, T. ; Stoynev, S. ; Swallow, E. ; Szleper, M. ; Valdata-Nappi, M. ; Valente, P. ; Vallage, B. ; Velasco, M. ; Veltri, M. ; Venditti, S. ; Wache, M. ; Wahl, H. ; Walker, A. ; Wanke, R. ; Widhalm, L. ; Winhart, A. ; Winston, R. ; Wood, M.D. ; Wotton, S.A. ; Yushchenko, O. ; Zinchenko, A. ; Ziolkowski, M.
Publication	2014
Imprint	29 Jan 2016
Number of pages	8
Note	Comments: XIIth International Conference on Heavy Quarks and Leptons 2014, Mainz, Germany XIIth International Conference on Heavy Quarks and Leptons 2014, Mainz, Germany
In:	PoS HQL2014 (2014) 022
In:	XIIth International Conference on Heavy Quarks and Leptons 2014, Mainz, Germany, 25 - 29 Aug 2014, pp.022
DOI	10.22323/1.223.0022
Subject category	Particle Physics - Experiment
Accelerator/Facility, Experiment	CERN SPS ; NA48/2 CERN SPS ; NA62
Abstract	The NA48/2 Collaboration at CERN has accumulated unprecedented statistics of rare kaon decays in the Ke4 modes: Ke4(+-) ($K^\pm \to \pi^+ \pi^- e^\pm \nu$) and Ke4(00) ($K^\pm \to \pi^0 \pi^0 e^\pm \nu$) with nearly one percent background contamination. The detailed study of form factors and branching rates, based on these data, has been completed recently. The results brings new inputs to low energy strong interactions description and tests of Chiral Perturbation Theory (ChPT) and lattice QCD calculations. In particular, new data support the ChPT prediction for a cusp in the $\pi^0\pi^0$ invariant mass spectrum at the two charged pions threshold for Ke4(00) decay. New final results from an analysis of about 400 $K^\pm \to \pi^\pm \gamma \gamma$ rare decay candidates collected by the NA48/2 and NA62 experiments at CERN during low intensity runs with minimum bias trigger configurations are presented. The results include a model-independent decay rate measurement and fits to ChPT description.
Copyright/License	arXiv nonexclusive-distrib. 1.0 publication: © 2014-2024 The Author(s) (License: CC-BY-NC-SA-4.0)

$Topology of $K_{e4}(+-)$ decays.$ $Reconstructed ($M_{3\pi},p_t$) plane for the normalization (a) and signal (b) candidates. Plot (a) is a zoom inside the smaller ellipse which defines the normalization sample. Crosses correspond to the ellipse centers ($M_{3\pi}$ = $M_K$; $p_t$ = 5 MeV/$c$).$ Show more plots

Corresponding record in: Inspire

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