0000000001001559

AUTHOR

J.-c. Chollet

showing 2 related works from this author

Measurement of the quadratic slope parameter in the K-L -> 3 pi(0) decay Dalitz plot

2001

A value of (-6.1 +- 0.9_{stat} +- 0.5_{syst})*10^{-3} is obtained for the quadratic slope parameter h in the K_L -> 3\pi^0 decay Dalitz plot at the NA48 experiment at the CERN SPS. The result is based on 14.7*10^6 fully reconstructed K_L -> 3\pi^0 -> 6\gamma decays. This is the most precise measurement of any of the Dalitz plot slope parameters in the charged and neutral kaon decays so far.

Physicsneutral kaonParticle physicsNuclear and High Energy PhysicsLarge Hadron Collidermesoni K; decadimenti; Dalitz plotdecadimentiDalitz plotkaon decay; neutral kaon; dalitz plotslope parametersNA48 experimentDalitz plotValue (computer science)KaonsKaons; Dalitz plot; slope parameterskaon decayHigh Energy Physics - Experimentmesoni KClassical mechanicsQuadratic equationK->3-PI
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Search for the decay KS → π0γγ

2003

Abstract A search for the decay K S → π 0 γγ 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 limit for the branching ratio BR ( K S → π 0 γγ , z ⩾0.2) −7 has been obtained at 90% confidence level, where z = m γγ 2 / m K 0 2 .

Nuclear physicsPhysicsNuclear and High Energy PhysicsParticle physicsLarge Hadron Collider010308 nuclear & particles physicsBranching fraction0103 physical sciencesDetectorLimit (mathematics)010306 general physics01 natural sciencesBeam (structure)
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