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CERN Document Server Encontrados 2,051 registros  1 - 10siguientefinal  ir al registro: La búsqueda tardó 0.50 segundos. 
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Latest results on rare kaon decays from the NA48/2 experiment at CERN / NA48/2 Collaboration
The NA48/2 experiment at CERN reports the first observation of the K->pi0e+e-decay from an exposure of 1.7x10^11 charged kaon decays recorded in 2003-2004. A sample of 4919candidates with 4.9% background contamination allows the determination of the branching ratioin the full kinematic region. [...]
SISSA, 2021 - 6 p. - Published in : PoS ICHEP2020 (2021) 413 Fulltext: PDF;
In : 40th International Conference on High Energy Physics (ICHEP), Prague, Czech Republic, 28 Jul - 6 Aug 2020, pp.413
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Latest results on rare kaon decays from the NA48/2 experiment @CERN / NA48/2 Collaboration
The NA48/2 experiment at CERN reports the first observation of the $K^± → π^±π^0e^+e^−$ decay from an exposure of $1.7 × 10^{11}$ charged kaon decays recorded in 2003–2004. A sample of 4919 candidates with 4.9% background contamination allows the determination of the branching ratio in the full kinematic region. [...]
2020 - 9 p. - Published in : Int. J. Mod. Phys. A 35 (2020) 2044019
In : 8th International Conference on New Frontiers in Physics (ICNFP 2019), Kolymbari, Crete, Greece, 21 - 29 Aug 2019, pp.2044019
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NA48/2 Results on Rare Kaon Decays / Madigozhin, Dmitry (Dubna, JINR) /NA48/2 Collaboration
A most precise measurement of the charged kaon semileptonic form factors has been obtained from 4.4 million Ke3 and 2.3 million Kμ3 events collected in 2004. In addition, the branching ratio of the K± → π±π0e+e− decay, never observed so far, has been obtained from a sample of 4919 candidates with 4.9% background contamination. [...]
Singapore : World Scientific, 2021 - 4 p. - Published in : 10.1142/9789811233913_0064
In : 19th Lomonosov Conference on Elementary Particle Physics, Moscow, Russia, 22 - 28 Aug 2019, pp.356-359
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Recent results on Kaon decays from NA48/2 / Bizzeti, Andrea (Florence U. ; INFN, Florence) /NA48/2 Collaboration
The first observation of the $K^\pm → π^\pm π^0 e^+ e^-$ rare decay by the NA48/2 experiment at CERN SPS is reported, based on $∼2\times 10^{11} K^\pm$ decays recorded in 2003-2004. From a sample of 4919 candidates with 4.9% background the branching ratio in the full kinematic region is measured to be BR($K^± → π^± π^0 e^+ e^-) = (4.24\pm 0.14)\times 10^-6$.The study of the kinematic space shows evidence for a structure dependent contribution in agreement with predictions based on Chiral Perturbation Theory. [...]
SISSA, 2019 - 5 p. - Published in : PoS DIS2019 (2019) 116 Fulltext: PDF;
In : The XXVII International Workshop on Deep Inelastic Scattering and Related Subjects, Turin, Italy, 8 - 12 Apr 2019, pp.116
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Study of the rare decay $K^{\pm} \rightarrow \pi^{\pm}\gamma\gamma$ and high precision measurement of the form factors of the semileptonic decays $K^{\pm} \rightarrow \pi^{0}\ell^{\pm}\nu$ / Raggi, Mauro (Frascati)
The NA48/2 experiment presents preliminary measurements of the form factors of the charged kaon semileptonic decays. The Ke3 and Kμ3 results are in good agreement allowing for a combined result which matches the precision of the current world average on the vector and scalar form factors. [...]
2014 - Published in : Int. J. Mod. Phys.: Conf. Ser. 35 (2014) 1460421
In : International Workshop on e+e- collisions from Phi to Psi 2013, Rome, Italy, 9 - 12 Sep 2013, pp.1460421
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Precision measurement of the form factors of the semileptonic decay $K^ \pm \to \pi^0 \ell^\pm \nu$ (Kl3) / Piandani, Roberto (INFN, Perugia ; Perugia U.) /NA48/2 Collaboration
The NA48/2 experiment at CERN collected a very large sample of charged kaon decays into multiple final states. This data allow measurements related to QCD. [...]
SISSA, 2019 - 4 p. - Published in : PoS ICHEP2018 (2019) 530 Fulltext from publisher: PDF;
In : XXXIX International Conference on High Energy Physics, Seoul, Korea, 4 - 11 Jul 2018, pp.530
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Study of the $K^{\pm} \to \pi^{\pm}\pi^{0}\gamma$ at the NA48/2 experiment at the CERN SPS / Raggi, Mauro
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Precision measurement of the form factors of the charged kaon semileptonic decays $K^\pm \rightarrow \pi^\pm_{l3}$ / Piccini, Mauro (INFN, Perugia) /NA48/2
The NA48/2 experiment has presented a final result of the charged kaon semileptonic decays form factors measurement based on 4.28 million $K^{\pm}\rightarrow \pi^0 e^{\pm}\nu$ (K$_{e3}$) and 2.91 million $K^{\pm}\rightarrow \pi^0 \mu^{\pm}\nu$ (K$_{\mu 3}$) selected decays, collected in 2004. The result is competitive with other measurements in (K$_{\mu 3}$) mode and has a smallest uncertainty for (K$_{e3}$), that leads to the most precise combined (K$_{\it{l}3}$) result and allows to reduce the form factor uncertainty on the extraction of |V$_{US}$|..
SISSA, 2018 - 5 p. - Published in : PoS EPS-HEP2017 (2018) 235 Fulltext: PDF; External link: PoS server
In : 2017 European Physical Society Conference on High Energy Physics, Venice, Italy, 05 - 12 Jul 2017, pp.235
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Precision measurement of the form factors of semileptonic charged kaon decays from NA48/2 / NA48/2 Collaboration
We present a measurement of the charged kaon semileptonic form factors based on 4.3 million $K^± → π^0 e^± \nu_e$ and 2.9 million $K^± → π^0 μ^± \nu_μ$ decays collectedby the NA48/2 experiment. The single results for the semi-electronic and semi-muonic channel have better and similar precision, respectively, than previousmeasurements. [...]
2018 - 4 p. - Published in : (2018) , pp. 315-318
In : 53rd Rencontres de Moriond on QCD and High Energy Interactions, La Thuile, Italy, 17 - 24 Mar 2018, pp.315-318
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The $K^\pm \rightarrow \pi^{\pm} \pi^0 e^+ e^-$ decay: first observation and study with the NA48/2 experiment at CERN / Anzivino, Giuseppina (INFN, Perugia ; Perugia U.) /NA48/2 Collaboration
The NA48/2 experiment collected data in 2003 and 2004 with the main purpose to study direct CP violation in charged kaons decaying into three pions. Thanks to the huge statistics collected, other studies are also possible. [...]
SISSA, 2020 - 6 p. - Published in : PoS EPS-HEP2019 (2020) 237 Fulltext from publisher: PDF;
In : European Physical Society Conference on High Energy Physics (EPS-HEP) 2019, Ghent, Belgium, 10 - 17 Jul 2019, pp.237
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