165 citations · 813 across the 31 of their papers we have counts for
28 papers · 1 filter
First observation and study of the decay
2 Collaboration, J. R. Batley, G. Kalmus +121
The NA48/2 experiment at CERN reports the first observation of the decay based on a sample of 2437 candidates with 15% background contam…
Recent NA48/2 and NA62 results
F. Ambrosino, A. Antonelli, G. Anzivino +156
The NA48/2 Collaboration at CERN has accumulated and analysed unprecedented statistics of rare kaon decays in the modes: () and $K_…
Measurement of the branching ratio of the decay
J. R. Batley, G. E. Kalmus, C. Lazzeroni +110
From the 2002 data taking with a neutral kaon beam extracted from the CERN-SPS, the NA48/1 experiment observed 97 candidates with a backgroun…
Search for the Rare Decays KL->pi0pi0mu+mu- and KL->pi0pi0X0->pi0pi0mu+mu-
KTeV Collaboration, E. Abouzaid, M. Arenton +47
The KTeV E799 experiment has conducted a search for the rare decays KL->pi0pi0mu+mu- and KL->pi0pi0X0->pi0pi0mu+mu-, where the X0 is a possible new neutral boson that was reported…
Forward Neutron Production at the Fermilab Main Injector
T. S. Nigmanov, D. Rajaram, M. J. Longo +50
We have measured cross sections for forward neutron production from a variety of targets using proton beams from the Fermilab Main Injector. Measurements were performed for proton…
Empirical parameterization of the K+- -> pi+- pi0 pi0 decay Dalitz plot
J. R. Batley, A. J. Culling, G. Kalmus +118
As first observed by the NA48/2 experiment at the CERN SPS, the $\p0p0$ invariant mass (M00) distribution from $\kcnn$ decay shows a cusp-like anomaly at M00=2m+, where m+ is the c…
Measurement of the direct emission and interference terms and search for CP violation in the decay K\pm -> π\pmπ^0 g
2 Collaboration
We report on the measurement of the direct emission (DE) and interference (INT) terms of the K\pm -> π\pmπ^0 g decay by the NA48/2 experiment at the CERN SPS. From the data collect…
Dispersive analysis of K_{L mu3} and K_{L e3} scalar and vector form factors using KTeV data
KTeV collaboration, E. Abouzaid et al., V. Bernard +3
Using the published KTeV samples of K_L --> pi^{\pm} e^{\mp} nu and K_L --> pi^{\pm} mu^{\mp} nu decays [1], we perform a reanalysis of the scalar and vector form factors based on…
Charged Kaon Mass Measurement using the Cherenkov Effect
The MIPP Collaboration, N. Graf, A. Lebedev +60
The two most recent and precise measurements of the charged kaon mass use X-rays from kaonic atoms and report uncertainties of 14 ppm and 22 ppm yet differ from each other by 122 p…
Final Results from the KTeV Experiment on the Decay KL -> pi0 gamma gamma
KTeV Collaboration, E. Abouzaid, M. Arenton +45
We report on a new measurement of the branching ratio B(KL->pi0 gamma gamma)using the KTeV detector. We reconstruct 1982 events with an estimated background of 608, that results in…
Determination of the Parity of the Neutral Pion via the Four-Electron Decay
E. Abouzaid, M. Arenton, A. R. Barker +44
We present a new determination of the parity of the neutral pion via the double Dalitz decay pi^0 -> e+ e- e+ e-. Our sample, which consists of 30511 candidate decays, was collecte…
First Observation and Measurement of the Decay K+- -> pi+- e+ e- gamma
2 Collaboration, J. R. Batley
Using the full data set of the NA48/2 experiment, the decay K+- -> pi+- e+ e- gamma is observed for the first time, selecting 120 candidates with 7.3 +- 1.7 estimated background ev…
Search for Lepton Flavor Violating Decays of the Neutral Kaon
KTeV collaboration, A. Abouzaid
The Fermilab KTeV experiment has searched for lepton flavor violating decays of the KL meson in three decay modes. We observe no events in the signal region for any of the modes st…
Search for the Rare Decay K_{L}\toπ^{0}π^{0}γ
KTeV Collaboration, E. Abouzaid, M. Arenton +49
The KTeV E799 experiment has conducted a search for the rare decay via the topology (where ). Due to Bose statistics…
Measurement of the Decay KL -> pi0 e+ e- gamma
KTeV Collaboration, E. Abouzaid, M. Arenton +48
We report on a new measurement of the branching ratio B(KL -> pi0 e+ e- gamma) using the KTeV detector. This analysis uses the full KTeV data set collected from 1997 to 2000. We re…
Search for direct CP violating charge asymmetries in and decays
J. R. Batley
A measurement of the direct CP violating charge asymmetries of the Dalitz plot linear slopes in and decays by…
Measurement of Direct Emission in the KL->pi+pi-gamma Decay Mode
KTeV Collaboration
In this paper the KTeV collaboration reports the analysis of 112.1*10^3 candidate KL->pi+pi-gamma decays including a background of 671+/-41 events with the objective of determining…
A Measurement of the K0 Charge Radius and a CP Violating Asymmetry Together with a Search for CP Violating E1 Direct Photon Emission in the Rare Decay KL->pi+pi-e+e-
KTeV Collaboration
Using the complete KTeV data set of 5241 candidate KL->pi+pi-e+e- decays (including an estimated background of 204+-14 events), we have measured the coupling gCR=0.163+- 0.014(stat…
Observation of the Decay Xi^0 --> Sigma^+ mu^- nu(bar)
KTeV Collaboration, E. Abouzaid, T. Alexopoulos +57
The Xi^0 muon semi-leptonic decay has been observed for the first time with nine identified events using the KTeV beam line and detector at Fermilab. The decay is normalized to the…
Search for the K(L) --> PI0 PI0 E+ E- Decay in the KTeV Experiment
KTeV Collaboration, A. Alavi-Harati
The recent discovery of a large CP violating asymmetry in K(L) --> PI+ PI- E+ E- mode has prompted us to seach for the associated K(L) --> PI0 PI0 E+ E- decay mode in the KTeV-E799…
Radiative Decay Width Measurements of Neutral Kaon Excitations Using the Primakoff Effect
KTeV Collaboration, A. Alavi-Harati
We produce a sample consisting of 147 candidate events, with minimal backgrounds, of the mixed axial vector pair K1(1270)-K1(1400) by exciting Kl's in the Coulomb field of lead and…
Measurements of the rare decay K_{L} -> e^{+} e^{-} e^{+} e^{-}
The KTeV Collaboration, A. Alavi-Harati
We observe 441 K_{L} -> e^{+} e^{-} e^{+} e^{-} candidate events with a background of 4.2 events and measure B(K_{L} -> e^{+} e^{-} e^{+} e^{-}) = (3.72 \pm 0.18(stat) \pm 0.23(sys…
First Observation of the decay KL -> pi0 e e gamma
The KTeV Collaboration
We report on the first observation of the decay KL -> pi0 ee gamma by the KTeV E799 experiment at Fermilab. Based upon a sample of 48 events with an estimated background of 3.6 +/-…
Search for the Decay Kl -> pi0 e+ e-
A. Alavi-Harati
We report on a search for the decay Kl -> pi0 e+ e- carried out by the KTeV/E799 experiment at Fermilab. This decay is expected to have a significant CP violating contribution and…