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CERN Document Server 找到 131 笔记录  1 - 10下一个最後  跳到记录: 检索需时 0.58 秒. 
1.
First observation and study of the $K^{\pm} \rightarrow \pi^{0} \pi^{0} \mu^{\pm} \nu$ decay / NA48/2 Collaboration
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 $(0.65 \pm 0.03) \times 10^{-6}$. [...]
arXiv:2310.20295; CERN-EP-2023-245.- Geneva : CERN, 2024-03-22 - 16 p. - Published in : JHEP 2403 (2024) 137 Draft (restricted): PDF; Fulltext: 2310.20295 - PDF; CERN-EP-2023-245 - PDF; Fulltext from Publisher: PDF; External link: Fermilab Library Server
2.
Measurement of the form factors of charged kaon semileptonic decays / NA48/2 Collaboration
A measurement of the form factors of charged kaon semileptonic decays is presented, based on $4.4 \times 10^{6}$ $K^\pm \to \pi^0 e^\pm \nu_e$ ($K^\pm_{e3}$) and $2.3 \times 10^{6}$ $K^\pm \to \pi^0 \mu^\pm \nu_\mu$ ($K^\pm_{\mu3}$) decays collected in 2004 by the NA48/2 experiment. The results are obtained with improved precision as compared to earlier measurements. [...]
arXiv:1808.09041; CERN-EP-2018-231.- Geneva : CERN, 2018-10-24 - 20 p. - Published in : JHEP 10 (2018) 150 Article from SCOAP3: scoap3-fulltext - PDF; scoap - PDF; Draft (restricted): PDF; Fulltext: fermilab-pub-18-701 - PDF; CERN-EP-2018-231 - PDF; 1808.09041 - PDF;
3.
First direct observation of time-reversal violation / CPLEAR Collaboration
2000 - Published in : AIP Conf. Proc. 549 (2000) 957-960 External link: Published version from AIP
In : 7th Conference on the Intersections between Particle and Nuclear Physics, Quebec City, Canada, 22 - 28 May 2000, pp.957-960
4.
Study of $\overline{p}$p to $e^{+}e^{-}$ reaction at rest / Bardin, G ; Burgun, G ; Calabrese, R ; Capon, G (CERN) ; Carlin, R ; Dalpiaz, P ; Dalpiaz, P F ; De Brion, J P ; Derré, J ; Dosselli, U et al.
1985 - 3 p.
In : 7th European Symposium on Antiproton Interactions, Durham, UK, 9 - 13 Jul 1984, pp.143-145
5.
New high statistics measurement of $K_{e4}$ decay form factors and $\pi\pi$ scattering phase shifts / NA48/2 Collaboration
We report results from a new measurement of the $K_{e4}$ decay $K^{\pm} \rightarrow \pi^{+}\pi^{-}e^{\pm}\nu$ by the NA48/2 collaboration at the CERN SPS, based on a partial sample of more than 670000 $K_{e4}$ decays in both charged modes collected in 2003. The form factors of the hadronic current (F, G, H) and $\pi\pi$ phase difference ($\delta=\delta_{s}-\delta_{p}$) have been measured in ten independent bins of the $\pi\pi$ mass spectrum to investigate the variation. [...]
CERN-PH-EP-2007-035.- Geneva : CERN, 2008 - 24 p. - Published in : Eur. Phys. J. C 54 (2008) 411-423 Springer Open Access article: PDF;
6.
Determination of the relative decay rate $K_{S} \to \pi e \nu$ / $K_{L} \to \pi e \nu$ / NA48 Collaboration
The decay rate of $K_{S} \to \pi e \nu$ relative to the rate of $K_{L} \to \pi e \nu$ has been measured by the NA48 collaboration in a neutral Kaon beam originating from 400 GeV proton-Be interactions at the CERN SPS. The result is $0.993 \pm 0.026_{stat} \pm 0.022_{syst}$, compatible with 1 in agreement with the Standard Model prediction at tree level. [...]
CERN-PH-EP-2007-014.- Geneva : CERN, 2007 - 9 p. - Published in : Phys. Lett. B 653 (2007) 145-150 Fulltext: PDF;
7.
Measurements of the $\Xi^0$ lifetime and the $\overline{\Xi^0}/\Xi^0$ flux ratio in a neutral beam / NA48/1 Collaboration
A total of 235 698 Xi0 -> Lambda pi0 and 21 527 anti-Xi0 -> anti-Lambda pi0 decays were selected from data obtained by the NA48/1 experiment at CERN. [...]
CERN-PH-EP-2007-015.
- 2007. - 16 p.
Fulltext
8.
Search for direct CP-violation in $K^{\pm} \to \pi^{\pm} \pi^{0} \pi^{0}$ decays / NA48/2 Collaboration
A search for direct CP-violation in $K^{\pm}\rightarrow \pi^\pm \pi^0 \pi^0$ decay based on 47.14 million events has been performed by the NA48/2 experiment at the CERN SPS. The asymmetry in the Dalitz plot linear slopes $A_g = ( g^+ -g^- ) / ( g^+ + g^- )$ is measured to be $A_g = (1.8 \pm 2.6) \cdot10^{-4}$. [...]
CERN-PH-EP-2006-006.- Geneva : CERN, 2006 - 14 p. - Published in : Phys. Lett. B 638 (2006) 22-29 Fulltext: PDF;
9.
Experimental study of the $\pi^{-}\pi$ phase shifts in the $K_{e4}$ decay / Extermann, P ; Bloch, P ; Bunce, G M ; Devaux, B ; Diamant-Berger, Alain M ; Do Duc, N ; Fischer, J ; Guisan, O ; Marel, Gérard ; Mermod, R et al.
1975. - 16 p.
10.
New limit on the $\Delta S = \Delta Q$ rule in the $K_{e4}$ decay / Geneva-Saclay(CEN) Collaboration
1976 - Published in : Phys. Lett. B 60 (1976) 393-396

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