| Article | |
| Report number | arXiv:2310.20295 ; CERN-EP-2023-245 |
| Title | First observation and study of the $K^{\pm} \rightarrow \pi^{0} \pi^{0} \mu^{\pm} \nu$ decay |
| Related title | First observation and study of the K$^{±}$→ π$^{0}$π$^{0}$μ$^{±}$ν decay |
| Author(s) |
Batley, John Richard (Cambridge U. (main)) ; Kalmus, George (Cambridge U. (main)) ; Lazzeroni, Cristina (Cambridge U. (main) ; Birmingham U.) ; Munday, David John (Cambridge U. (main) ; Birmingham U.) ; Slater, Mark W. (Cambridge U. (main) ; Birmingham U.) ; Wotton, Stephen A. (Cambridge U. (main)) ; Arcidiacono, Roberta (CERN ; Piemonte Orientale U., Novara) ; Bocquet, Ginette (CERN) ; Cabibbo, Nicola (CERN) ; Ceccucci, Augusto (CERN) ; Cundy, Donald (CERN) ; Falaleev, Valeri (CERN ; INFN, Perugia) ; Fidecaro, Maria (CERN) ; Gatignon, Lau (CERN ; Lancaster U.) ; Gonidec, Allain (CERN) ; Kubischta, Werner (CERN) ; Maier, Andrew (CERN) ; Norton, Alan (CERN ; Glasgow U.) ; Patel, Mitesh (CERN ; Imperial Coll., London) ; Peters, Andreas Joachim (CERN) ; Potrebenikov, Yuri ; Monnier, Emmanuel (Marseille, CPPM ; Chicago U., EFI) ; Swallow, Earl (Chicago U., Astron. Astrophys. Ctr.) ; Winston, Roland (UC, Merced) ; Rubin, Philip David (U. Edinburgh (main) ; George Mason U.) ; Walker, Alan (U. Edinburgh (main)) ; Dalpiaz, Pietro (Ferrara U.) ; Damiani, Chiara (Ferrara U.) ; Fiorini, Massimiliano (Ferrara U.) ; Martini, Mara (Ferrara U.) ; Petrucci, Ferruccio (Ferrara U.) ; Savrié, Mauro (Ferrara U.) ; Scarpa, Marcella (Ferrara U.) ; Wahl, Heinrich (Ferrara U. ; Mainz U., Inst. Phys.) ; Baldini, Wander (INFN, Ferrara) ; Cotta Ramusino, Angelo (INFN, Ferrara) ; Gianoli, Alberto (INFN, Ferrara) ; Calvetti, Mario (Florence U.) ; Celeghini, Enrico (Florence U.) ; Iacopini, Enrico (Florence U.) ; Lenti, Massimo (Florence U.) ; Ruggiero, Giuseppe (Florence U.) ; Bizzeti, Andrea (INFN, Florence ; Modena U.) ; Veltri, Michele (INFN, Florence ; Urbino U.) ; Behler, Matthias (Mainz U., Inst. Phys.) ; Eppard, Kirsten (Mainz U., Inst. Phys.) ; Hita-Hochgesand, Manuel (Mainz U., Inst. Phys.) ; Kleinknecht, Konrad (Mainz U., Inst. Phys.) ; Marouelli, Peter (Mainz U., Inst. Phys.) ; Masetti, Lucia (Mainz U., Inst. Phys.) ; Moosbrugger, Ulrich (Mainz U., Inst. Phys.) ; Morales Morales, Cristina (Mainz U., Inst. Phys.) ; Renk, Burkhard (Mainz U., Inst. Phys.) ; Wache, Martin (Mainz U., Inst. Phys.) ; Wanke, Rainer (Mainz U., Inst. Phys.) ; Winhart, Andreas (Mainz U., Inst. Phys.) ; Coward, David (SLAC) ; Dabrowski, Anne (CERN) ; Fonseca Martin, Teresa (Northwestern U.) ; Shieh, Michal (Northwestern U.) ; Szleper, Michal (Northwestern U. ; NCBJ, Swierk) ; Velasco, Mayda (Northwestern U.) ; Wood, Matthew D. (SLAC) ; Anzivino, Giuseppina (Perugia U.) ; Imbergamo, Ermanno (Perugia U.) ; Nappi, Aniello (Perugia U.) ; Piccini, Mauro (Perugia U.) ; Raggi, Mauro (Perugia U. ; Rome U.) ; Valdata-Nappi, Marisa (Perugia U.) ; Cenci, Patrizia (INFN, Perugia) ; Pepe, Monica (INFN, Perugia) ; Petrucci, Maria Cristina (INFN, Perugia) ; Costantini, Flavio (Pisa U.) ; Doble, Niels (Pisa U. ; Mainz U., Inst. Phys.) ; Fiorini, Luca (Pisa U.) ; Giudici, Sergio (Pisa U.) ; Pierazzini, Giuseppe (Pisa U.) ; Sozzi, Marco (Pisa U.) ; Venditti, Stefano (Pisa U.) ; Collazuol, Gianmaria (Pisa, Scuola Normale Superiore ; Padua U.) ; Di Lella, Luigi (Pisa, Scuola Normale Superiore ; Mainz U., Inst. Phys.) ; Lamanna, Gianluca (Pisa, Scuola Normale Superiore ; Pisa U.) ; Mannelli, Italo (Pisa, Scuola Normale Superiore) ; Michetti, Andrea (Pisa, Scuola Normale Superiore) ; Cerri, Claudio (INFN, Pisa) ; Fantechi, Riccardo (INFN, Pisa) ; Bloch-Devaux, Brigitte (IRFU, Saclay ; U. Turin (main)) ; Cheshkov, Cvetan (IRFU, Saclay) ; Chèze, Jean-Baptiste (IRFU, Saclay) ; De Beer, Michel (IRFU, Saclay) ; Derré, Jacques (IRFU, Saclay) ; Marel, Gerard (IRFU, Saclay) ; Mazzucato, Eduardo (IRFU, Saclay) ; Peyaud, Bernard (IRFU, Saclay) ; Vallage, Bertrand (IRFU, Saclay) ; Holder, Martin (Siegen U.) ; Ziolkowski, Michal (Siegen U.) ; Bifani, Simone (Turin U.) ; Clemencic, Marco (Turin U. ; CERN) ; Goy Lopez, Silvia (Turin U. ; Madrid, CIEMAT) ; Biino, Cristina (INFN, Turin) ; Cartiglia, Nicolo (INFN, Turin) ; Marchetto, Flavio (INFN, Turin) ; Dibon, Heinz (Vienna, OAW) ; Jeitler, Manfred (Vienna, OAW) ; Markytan, Manfred (Vienna, OAW) ; Mikulec, Ivan (Vienna, OAW) ; Neuhofer, Gunther (Vienna, OAW) ; Widhalm, Laurenz (Vienna, OAW) ; Balev, Spasimir ; Frabetti, PierLuigi ; Gersabeck, Evelina Mihova (U. Manchester (main)) ; Goudzovski, Evgueni (Birmingham U.) ; Hristov, Peter (CERN) ; Kekelidze, Vladimir ; Korotkova, Anna ; Kozhuharov, Venelin (Sofiya U.) ; Litov, Leandar (Sofiya U.) ; Madigozhin, Dmitry ; Molokanova, Natalia ; Polenkevich, Irina ; Potrebenikov, Yu. ; Stoynev, Stoyan (Fermilab) ; Zinchenko, Andrey |
| Corporate author(s) | The NA48 collaboration |
| Publication | 2024-03-22 |
| Imprint | 06 Sep 2023 |
| Number of pages | 16 |
| Note | 16 pages, 9 figures |
| Published in: | JHEP 2403 (2024) 137 |
| DOI | 10.1007/JHEP03(2024)137 |
| Subject category | Particle Physics - Experiment |
| Accelerator/Facility, Experiment | CERN SPS ; NA48/2 |
| Keywords | flavor physics ; QCD ; branching fraction ; rare decay ; experimental results ; Rare kaon decay ; Semileptonique Kmu4 decay ; low energy QCD ; Chiral Perturbation Theory ; Form factor |
| Abstract | The NA48/2 experiment at CERN reports the first observation of the $K^{\pm} \rightarrow \pi^{0} \pi^{0} \mu^{\pm} \nu$ decay based on a sample of 2437 candidates with 15% background contamination collected in 2003-2004. The decay branching ratio in the kinematic region of the squared dilepton mass above $0.03$ GeV$^2/c^4$ is measured to be $(0.65 \pm 0.03) \times 10^{-6}$. The extrapolation to the full kinematic space, using a specific model, is found to be $(3.45 \pm 0.17) \times 10^{-6}$, in agreement with chiral perturbation theory predictions. |
| Other source | Inspire |
| Copyright/License | Preprint: © 2023-2024 CERN (License: CC-BY-4.0) Publication: © 2024 CERN (License: CC-BY-4.0), sponsored by SCOAP³ |
| Submitted by | brigitte.bloch-devaux@cern.ch |
记录创建於2023-09-06，最後更新在2024-08-03
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