Search for the decay $K_{s} \to \pi^{0}\gamma\gamma$ (2003)
Lai, A, Marras, D, Batley, J Richard, Bevan, A, Dosanjh, R S, Gershon, T J, ...
A search for the decay $K_S\to\pi^0\gamma\gamma$ has been made using the NA48 detector at the CERN SPS. Using data collected in 1999 during a 40-hour run with a high-intensity $K_S$ beam, an upper...
Precise measurements of the $K_{S}\to\gamma\gamma$ and $K_{L}\to\gamma\gamma$ decay rates (2002)
Lai, A, Marras, D, Batley, J Richard, Dosanjh, R S, Gershon, T J, Kalmus, George Ernest, ...
The K_S -> gammagamma decay rate has been measured with the NA48 detector using a high intensity short neutral beam from the CERN SPS. The measured branching ratio BR(K_S) -> gammagamma = (2.78 +-...
A precision measurement of direct CP violation in the decay of neutral kaons into two pions (2002)
Batley, J Richard, Dosanjh, R S, Gershon, T J, Kalmus, George Ernest, Lazzeroni, C, Munday, D J, ...
The direct CP violation parameter Re($\epsilon'/\epsilon)$ has been measured from the decay rates of neutral kaons into two pions using the NA48 detector at the CERN SPS. The 2001 running period was...
Precise measurement of the decay $K_{L} \to \pi^{0}\gamma\gamma$ (2002)
Lai, A, Marras, D, Bevan, A, Dosanjh, R S, Gershon, T J, Hay, B, ...
The decay rate of $\klpgg$ has been measured with the NA48 detector at the CERN SPS. A total of $2558$ $\klpgg$ candidates have been observed with a residual background of $3.2\%$. The branching...
A Measurement of the $K_{s}$ Lifetime (2002)
Lai, A, Marras, D, Batley, J Richard, Bevan, A, Dosanjh, R S, Gershon, T J, ...
A measurement of the $\KS$ lifetime is presented using data recorded by the NA48 experiment at the CERN-SPS during 1998 and 1999. The $\KS$ lifetime is derived from the ratio of decay time...
New measurements of the $\eta$ and $K^0$ masses (2002)
Lai, A, Marras, D, Batley, J Richard, Bevan, A J, Dosanjh, R S, Gershon, T J, ...
New measurements of the $\eta$ and $K^0$ masses have been performed using decays to 3$\pi^0$ with the NA48 detector at the CERN SPS. Using symmetric decays to reduce systematic effects, the results...
The trigger for $K^0 \rightarrow \pi^{0}\pi^{0}$ decays of the NA48 experiment at CERN (2001)
Barr, Giles David, Cundy, Donald C, Formenti, F, Gorini, B, Hallgren, Björn I, Iwanski, W, ...
The trigger used for the collection of the samples of $K^{0}$ yields $\pi^{0}\pi^{0}$ decays in the NA48 experiment at CERN uses a novel pipeline design in order to satisfy the demanding...
A precise measurement of the direct CP violation parameter $Re(\epsilon'/\epsilon)$ (2001)
Lai, A, Marras, D, Bevan, A, Dosanjh, R S, Gershon, T J, Hay, B, ...
The direct CP violation parameter \Ree\ has been measured from the decay rates of neutral kaons into two pions using the NA48 detector at the CERN SPS. With 3.3 million \klpiopio\ events collected...
Search for the decay $K_{s} \to \pi^{0}e^{+}e^{-}$ (2001)
Lai, A, Marras, D, Batley, J Richard, Bevan, A, Dosanjh, R S, Gershon, T J, ...
A search for the decay $\kspiee$ has been made using the NA48 detector at the CERN SPS. Using data collected in 1999 during a 40-hour run with a high-intensity $\ks$ beam, an upper limit for the...
Lai, A, Marras, D, Musa, L, Bevan, A, Dosanjh, R S, Gershon, T J, ...
A value of \( (-6.1\pm 0.9_{stat}\pm 0.5_{syst})\times 10^{-3} \) is obtained for the quadratic slope parameter \( h \) in the \( K_{L}\rightarrow 3\pi ^{0} \) decay Dalitz plot at the NA48...
A new measurement of the branching ratio of $K_{s} \to \gamma\gamma$ (2000)
Lai, A, Marras, D, Bevan, A, Dosanjh, R S, Gershon, T J, Hay, B, ...
The decay rate of $\ksgg$ has been measured with the NA48 detector at the CERN SPS. A total of $149$ $\ksgg$ events have been observed. The branching ratio is determined to be $(2.58 \pm0.36(stat)...
Measurement of the $K_{L} \to e^{+} e^{-} e^{+} e^{-}$ Decay Rate (2000)
Lai, A, Iacopini, E, Graziani, G, Collazuol, G, Calvetti, M, Bizzeti, A, ...
The decay rate of the neutral long-lived K meson into the e+ e- e+ e- final state has been measured with the NA48 detector at the CERN SPS. Using data collected in 1999, a total of 132 events has...
Measurement of the $K_{L} \to e^{+} e^{-} e^{+} e^{-}$ Decay Rate (2000)
Lai, A, Marras, D, Bevan, A, Dosanjh, R S, Gershon, T J, Hay, B, ...
The decay rate of the neutral long-lived K meson into the e+ e- e+ e- final state has been measured with the NA48 detector at the CERN SPS. Using data collected in 1999, a total of 132 events has...
Results on direct CP violation from NA48 (1999)
The measurement of Re( epsilon '/ epsilon ) proceeds by counting the number of decays from a K/sub s/ beam into both pi /sup +/ pi /sup -/ and pi /sup 0/ pi /sup 0/ within a given energy range and...
A new measurement of direct CP violation in two pion decays of the neutral kaon (1999)
Fanti, V, Lai, A, Marras, D, Musa, L, Bevan, A V, Gershon, T J, ...
The NA48 experiment at CERN has performed a new measurement of direct CP violation, based on data taken in 1997 by simultaneously collecting $kl$ and $ks$ decays into $pipin$ and $pipic$. The result...
Fanti, V, Lai, A, Musa, L, Marras, D, Nappi, A, Hay, B, ...
The decay rate of the neutral K meson $\mathrm{K_{L} \rightarrow e^{+}e^{-}\gamma}$ has been measured with the NA48 detector at the CERN SPS. A total of 6864 events has been observed with an...
Direct search for light gluinos (1998)
Fanti, V, Lai, A, Musa, L, Marras, D, Nappi, A, Hay, B, ...
We present the results for a direct search for light gluinos through the appearance of $\eta\rightarrow 3\pin$ with high transverse momentum in the vacuum tank of the NA48 experiment at CERN. We find...
Space charge in ionization detectors and the NA48 electromagnetic calorimeter (1998)
Palestini, S, Barr, Giles David, Ceccucci, Augusto, Cogan, J, Cundy, Donald C, Fischer, G, ...
The subject of space charge due to positive ions slowly moving in parallel plate ionization chambers is considered. A model for the degradation of the detector response is developed, with particular...
The NA48 LKr calorimeter digitizer electronics chain (1998)
Hallgren, Björn I, Bal, F, Barr, Giles David, Buchholz, P, Ceccucci, Augusto, Formenti, F, ...
First Measurement of the Rate $K^0_L \to \pi \mu \nu \gamma$ (1997)
Bender, M, Augustin, I, Holder, M, Schwarze, I, Ziolkowski, M, Fanti, V, ...
In a preliminary version of the NA48 experiment at the CERN SPS, in which an iron- scintillator sandwich calorimeter was used as a photon detector, the ratio of K$_L \to \pi\mu\nu\gamma$ and K$_L \to...
High rate large dynamic range analog circuitry and digitizers for fast calorimeter (1996)
Hallgren, Björn I, Bal, F, Barr, Giles David, Buchholz, P, Formenti, F, Funk, W, ...
Search for the decay K$_{L}$ --> 3$\gamma$ (1996)
Barr, Giles David, Buchholz, P, Cundy, Donald C, Doble, Niels T, Gatignon, L, Grafström, P, ...
Performance of an electromagnetic liquid krypton calorimeter (1993)
Fanti, V, Barr, Giles David, Buchholz, P, Cundy, Donald C, Doble, Niels T, Gatignon, L, ...
A new measurement of direct CP violation in the neutral kaon system (1993)
Barr, Giles David, Buchholz, P, Carosi, R, Coward, D H, Cundy, Donald C, Doble, Niels T, ...
A measurement of the decay K$_{L}$ --> $\pi^{0}\gamma\gamma$ (1992)
Barr, Giles David, Buchholz, P, Carosi, R, Coward, D H, Cundy, Donald C, Doble, Niels T, ...
Observation of the decay K$^{0}_{L}$ --> e$^{+}$e$^{-}$e$^{+}$e$^{-}$ (1991)
Barr, Giles David, Carosi, R, Coward, D H, Cundy, Donald C, Doble, Niels T, Gatignon, L, ...
Observation of the decay K$_{L}$ --> $\pi^{0}\gamma\gamma$ (1990)
Barr, Giles David, Carosi, R, Coward, D H, Cundy, Donald C, Doble, Niels T, Gatignon, L, ...
A large-area transition radiation detector (1990)
Barr, Giles David, Carosi, R, Gatignon, L, Gibson, V, Hagelberg, R, ...