Measurement of $k^0 _{\mu 3}$ form factors (2006)
Lai, A, Marras, D, Bevan, A, Dosanjh, R S, Gershon, T J, Hay, B, ...
This paper reports on a new high precision measurement of the form factors of the $\rm K_{L}\rightarrow~\pi^{\pm}~\mu^{\mp}~\nu_{\mu}$} decay. The data sample of about 2.3X10^6 events was recorded in...
Search for direct CP-violation in $K^{\pm}\to \pi^{\pm}\pi^{0}\pi^{0}$ decays (2006)
Batley, J Richard, Culling, A J, Kalmus, George Ernest, Lazzeroni, C, Munday, D J, Slater, M W, ...
A search for direct CP-violation in K+- --> pi+-pi0pi0 decays 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...
Search for direct CP-violation in $K^{\pm} \to \pi^{\pm} \pi^{0} \pi^{0}$ decays (2006)
Batley, J Richard, Culling, A J, Kalmus, George Ernest, Lazzeroni, C, Munday, D J, Slater, M W, ...
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...
Batley, J Richard, Anzivino, Giuseppina, Arcidiacono, R, Baldini, W, Balev, S, Behler, M, ...
We report the results from a study of ~23 Million K+- ==> pi+- pizero pizero decays recorded by the NA48/2 experiment at the CERN SPS, showing an anomaly in the pizero pizero invariant mass...
Batley, J Richard, Lazzeroni, C, Munday, D J, Patel, M, Slater, M W, Wotton, S A, ...
The NA48 collaboration has measured the amplitude of the CP-conserving component of the decay K^0_S -> \pi^+ \pi^- \pi^0 relative to K^0_L -> \pi ^+ \pi^- \pi ^0. For the characteristic parameter...
Measurement of the $K_{L} \to e^{+}e^{-}e^{+} e^{-}$ Decay Rate (2005)
Lai, A, Bearden, I G, Marras, D, Batley, J Richard, Dosanjh, R S, Gershon, T J, ...
The decay rate of the long-lived neutral 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 1998 and 1999, a total of 200...
Search for CP violation in $K^{0} \to 3\pi^{0}$ decays (2005)
Lai, A, Marras, D, Batley, J Richard, Dosanjh, R S, Gershon, T J, Kalmus, George Ernest, ...
Using data taken during the year 2000 with the NA48 detector at the CERN SPS, a search for the CP violation decay K_s -> 3pi^0 has been performed. From a fit to the lifetime distribution of about 4.9...
Measurement of the Radiative Ke3 Branching Ratio (2004)
Anzivino, Giuseppina, Barr, G, Becker, H G, Bertanza, L, Bevan, A, Biino, C, ...
We present a measurement of the relative branching ratio of the decay KL -> pi e nu gamma (Ke3gamma) with respect to KL-> pi e nu (gamma) (Ke3+Ke3gamma) decay. The result is based on observation of...
Measurement of the Radiative $K_{e3}$ Branching Ratio (2004)
Lai, A, Marras, D, Bevan, A, Dosanjh, R S, Gershon, T J, Hay, B, ...
We present a measurement of the relative branching ratio of the decay {K}^0 -> pi+-e-+ nu gamma ({K}_e3 gamma) with respect to {K}^0 -> pi+- e-+ nu (gamma) ({k}_e3 + k}_e3 gamma) decay. The result is...
Measurement of $K_{e3}^{0}$ form factors (2004)
Lai, A, Marras, D, Bevan, A, Dosanjh, R S, Gershon, T J, Hay, B, ...
The semileptonic decay of the neutral K meson KL -> pi+-e-+v (Ke3), was used to study the strangeness-changing weak interaction of hadrons. A sample of 5.6 million reconstructed events recorded by...
Lai, A, Lai, A, Marras, D, Bevan, A, Dosanjh, R S, Gershon, T J, ...
We present a new measurement of the branching ratio R of the decay KL -> pi+-e-+nu, denoted as Ke3, relative to all charged Kl decays with two tracks, based on data taken with the NA48 detector at...
Search for CP violation in $K^{0} \to 3 \pi^{0}$ decays (2004)
Batley, J Richard, Lai, A, Marras, D, Batley, J Richard, Dosanjh, R S, Gershon, T J, ...
Using data taken during the year 2000 with the NA48 detector at the CERN SPS, a search for the CP violating decay K_S -> 3 pi0 has been performed. From a fit to the lifetime distribution of about 4.9...
Observation of the rare decays $K_{s} \to \pi^{0} \mu^{+} \mu^{-}$ (2004)
Batley, J Richard, Kalmus, George Ernest, Lazzeroni, C, Munday, D J, Patel, M, Slater, M W, ...
A search for the decay Ks -> pi0 mu+ mu- has been made by the NA48/1 Colaboration at the CERN SPS accelerator. The data were collected during 2002 with a high intensity Ks beam. Six events were found...
Batley, J Richard, Dosanjh, R S, Gershon, T J, Kalmus, George Ernest, Lazzeroni, C, Munday, D J, ...
The K_L -> pi+- pi0 e-+ nu_e(nubar_e) decau was investigated with the NA48 detector at CERN SPS using a beam of long-lived neutral kaons. The branching ratio Br(K_L -> pi+- pi0 e-+...
Measurement of the $\Xi^0 \rightarrow \Lambda\gamma$ Decay Asymmetry and Branching Fraction (2003)
Lai, A, Marras, D, Bevan, A, Dosanjh, R S, Gershon, T J, Hay, B, ...
In data taken with the NA48 experiment at the CERN SPS in 1999, 730 candidates of the weak radiative hyperon decay Xi0 -> Lambda gamma have been found with an estimated background of 58 +- 8 events....
Observation of the rare decay $K_S \rightarrow \pi^0 \mathrm{e}^+\mathrm{e}^-$ (2003)
Batley, J Richard, Kalmus, George Ernest, Lazzeroni, C, Munday, D J, Patel, M, Slater, M W, ...
A search for the decay K_S -> pi0e+e- has been made by the NA48/1 experiment at the CERN SPS accelerator. Using data collected during 89 days in 2002 with a high-intensity K_S beam, 7 events were...
First observation of the $K_{S}\to \pi^{0}\gamma\gamma$ decay (2003)
Lai, A, Marras, D, Batley, J Richard, Dosanjh, R S, Gershon, T J, Kalmus, George Ernest, ...
Using the NA48 detector at the CERN SPS, 31K_S -> \pi^0\gamma\gamma candidates with an estimated background of 13.7 +- 3.2 events have been observed. This first observation leads to a branching ratio...
Investigation of $K_{L,S} \rightarrow \pi^{+}\pi^{-}e^{+}e^{-}$ decays (2003)
Lai, A, Anzivino, Giuseppina, Arcidiacono, R, Barr, G, Becker, H G, Bevan, A, ...
The K_L -> pi+pi-e+e- and K_S -> pi+pi-e+e- decay modes have been studied in detail using the NA48 detector at CERN SPS. Based on the data collected during the 1998 and 1999 run periods, a sample of...
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...
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...
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...
Deflection of 32.8 TeV/c fully stripped Pb ions by means of a bent Si crystal (1999)
Biino, C, Clément, M, Doble, Niels T, Elsener, K, Gatignon, L, Grafström, P, ...
New results on the deflection of fully stripped 32.8 TeV/c Pb ions in a bent Si crystal at the CERN-SPS are reported. Deflection efficiencies above 10% have been measured for deflection angles in the...
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...
The simultaneous and nearly-collinear K0 beams for experiment NA48 (1998)
Biino, C, Doble, Niels T, Gatignon, L, Grafström, P, Wahl, H
A system of simultaneous and nearly-collinear beams of long- and short-lived neutral kaons has been installed and extensively studied. These beams form an integral part of the NA48 experiment at the...
The simultaneous long- and short-lived neutral kaon beams for experiment NA48 (1998)
Biino, C, Doble, Niels T, Gatignon, L, Grafström, P, Wahl, H
Simultaneous, nearly-collinear beams of long- and short-lived neutral kaons are an essential feature of the precision CP-violation experiment NA48 *) at the SPS. The present report describes the...
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$_L \to...
Deflection and extraction of Pb ions up to 33 TeV/c by a bent silicon crystal (1997)
Arduini, Gianluigi, Biino, C, Clément, M, Cornelis, Karel, Doble, Niels T, Elsener, K, ...
The first results from an experiment to deflect a beam of fully stripped, ulta-relativistic Pb ions of 400 GeV/c per unit of charge, equivalent to 33 TeV/c, by means of a bent crystal are reported....
First observation of the deflection of a 33 TeV Pb ion beam in a bent silicon crystal (1997)
Biino, C, Clément, M, Doble, Niels T, Elsener, K, Gatignon, L, Grafström, P, ...
For the first time, the deflection of an ultra-relativistic, fully stripped Pb82+ ion beam in a bent silicon crystal has been observed. The ions were provided by the CERN-SPS in the H4 beam at a...
Record deflection efficiencies measured for high energy protons in a bent germanium crystal (1997)
Biino, C, Clément, M, Doble, Niels T, Elsener, K, Gatignon, L, Grafström, P, ...
New experimental results on the deflection of high energy protons in a bent germanium crystal are presented. At 450 GeV/c, the 50 mm long crystal gave record deflection efficiencies up to 60% for...
Biino, C, Clément, M, Doble, Niels T, Elsener, K, Freund, A, Gatignon, L, ...
Experimental results on high-energy beam deflection by means of a bent germanium crystal are presented. Record deflection efficiencies of 60% have been found for 450 GeV/c protons at small angles....
Biino, C, Clément, C, Doble, Niels T, Elsener, K, Gatignon, L, Grafström, P, ...
Experimental results obtained for deflection of 450 GeV/c protons channeling along the {111} planes in a bent, strongly irradiated silicon crystal are presented. A comparison between the deflection...
Search for the decay K$_{L}$ --> 3$\gamma$ (1996)
Barr, Giles David, Buchholz, P, Cundy, Donald C, Doble, Niels T, Gatignon, L, Grafström, P, ...
New results from the CERN-SPS beam deflection experiments with bent crystals (1996)
Baurichter, A, Kirsebom, K, Medenwaldt, R, Møller, S P, Worm, T, Uggerhøj, Erik, ...
Measurement of pair-production by high energy photons in an aligned tungsten crystal (1995)
Moore, R, Parker, M A, Baurichter, A, Kirsebom, K, Medenwaldt, R, Mikkelsen, U, ...
A new measurement has been made of the rate of pair production in a 3.2 mm thick tungsten crystal, exposed to photons with energies in the range 10 to 150 GeV, for angles of incidence up to 10 mrad...
Deflection of high energy beams by channeling in bent silicon crystals (1994)
Elsener, K, Clément, M, Doble, Niels T, Gatignon, L, Grafström, P, Baurichter, A, ...
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, ...
The upgraded muon beam at the SPS (1993)
Doble, Niels T, Gatignon, L, Von Holtey, G, Novoskoltsev, F N
High efficiency beam deflection by planar channeling in bent silicon crystals (1993)
Elsener, K, Clément, M, Doble, Niels T, Gatignon, L, Grafström, P, Møller, S P, ...
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, ...
Deflection of 450 GeV protons by planar channeling in a bent silicon crystal (1992)
Jensen, B N, Møller, S P, Uggerhøj, Erik, Worm, T, Atherton, Henry W, Clément, M, ...
High efficiency bending of 450 GeV protons using channeling (1991)
Møller, S P, Uggerhøj, Erik, Atherton, Henry W, Clément, M, Doble, Niels T, Elsener, K, ...
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, ...
First evidence for direct CP violation (1990)
Burkhardt, H, Clarke, P, Coward, D H, Cundy, Donald C, Doble, Niels T, Gatignon, L, ...
The beam and detector for a high-precision measurement of CP violation in neutral-kaon decays (1990)
Burkhardt, H, Clarke, P, Cundy, Donald C, Doble, Niels T, Gatignon, L, Hagelberg, R, ...
Direct measurement of the lifetime of the neutral pion (1990)
Atherton, Henry W, Bovet, Claude, Coet, P, DeSalvo, R, Doble, Niels T, Maleyran, R, ...
Contamination of nuclear fragments in a 200 GeV per nucleon oxygen ion beam at CERN (1990)
Atherton, Henry W, Doble, Niels T, Ferri, G, Glaser, M, Grafström, P, Jeanneret, J B, ...
Search for the decay K$_{L}$ --> $\pi^{0}$e$^{+}$e$^{-}$ (1990)
Barr, Giles David, Clarke, P, Coward, D H, Cundy, Donald C, Doble, Niels T, Gatignon, L, ...