First observation of the KS → π0γ γ decay

First observation of the KS → π0γ γ decay

Using the NA48 detector at the CERN SPS, 31 KS → π 0γγ candidates with an estimated background of 13.7 ± 3.2 events have been observed. This first observation leads to a branching ratio of BR(KS → π0γγ) z>0.2 = (4.9 ± 1.6stat ± 0.9 syst) × 10-8 in agreement with Chiral Perturbation Theory pre...

书目详细资料
Main Authors:	Lai, A, Marras, D, Batley, JR, Dosanjh, R, Gershon, T, Kalmus, G, Lazzeroni, C, Munday, D, Olaiya, E, Parker, M, White, T, Wotton, SA, Arcidiacono, R, Barr, G, Bocquet, G, Ceccucci, A, Cuhadar-Dönszelmann, T, Cundy, D, Doble, N, Falaleev, V, Gatignon, L, Gonidec, A, Gorini, B, Grafström, P, Kubischta, W
格式:	Journal article
语言:	English
出版:	2004

相似书籍

Measurement of the ratio Γ (KL → π+ π-) / Γ (KL → π± e∓ ν) and extraction of the CP violation parameter | η+ - |
由: Lai, A, et al.
出版: (2007)

First observation of the K-S -> pi(0)gamma gamma decay
由: Lai, A, et al.
出版: (2004)

Precise measurements of the KS → γγ and KL → γγ decay rates
由: Lai, A, et al.
出版: (2003)

Search for CP violation in K0→3π0 decays
由: Lai, A, et al.
出版: (2005)

Precise measurements of the K-s -> gamma gamma and K-L -> gamma gamma decay rates
由: Lai, A, et al.
出版: (2003)

A precision measurement of direct CP violation in the decay of neutral kaons into two pions
由: Batley, JR, et al.
出版: (2002)

Search for the decay K-S -> pi(0) gamma gamma
由: Lai, A, et al.
出版: (2003)

Search for the decay KS → π0γγ
由: Lai, A, et al.
出版: (2003)

Search for the decay K-s -> pi(0)e(+)e(-)
由: Lai, A, et al.
出版: (2001)

Measurement of K-e3(0) form factors
由: Lai, A, et al.
出版: (2004)

Measurement of the branching ratio of the decay KL→ π±e∓ν and extraction of the CKM parameter |Vus|
由: Lai, A, et al.
出版: (2004)

Measurement of the Xi(0)->Lambda gamma decay asymmetry and branching fraction - NA48 collaboration
由: Lai, A, et al.
出版: (2004)

Measurement of the Ξ0 → Λγ decay asymmetry and branching fraction
由: Lai, A, et al.
出版: (2004)

Measurement of the radiative K-e3 branching ratio
由: Lai, A, et al.
出版: (2005)

A new measurement of the branching ratio of K-S -> gamma gamma
由: Lai, A, et al.
出版: (2000)

Measurement of the branching ratio of the decay K-L ->pi(+/-)e(-/+)upsilon and extraction of the CKM parameter vertical bar V-us vertical bar
由: Lai, A, et al.
出版: (2004)

Measurement of the ratio Gamma(K-L -> pi(+)pi(-))/Gamma(K-L -> pi(+/-)e(-/+)nu) and extraction of the CP violation parameter vertical bar eta(+-)vertical bar
由: Lai, A, et al.
出版: (2007)

Precise measurement of the decay KL → π0γγ
由: Lai, A, et al.
出版: (2002)

Precise measurement of the decay K-L ->pi(0)gamma gamma
由: Lai, A, et al.
出版: (2002)

New measurements of the eta and Kappa(0) masses
由: Lai, A, et al.
出版: (2002)

Investigation of K-L,K-s -> pi(+)pi(-)e(+)e(-) decays
由: Lai, A, et al.
出版: (2003)

Measurement of K-mu 3(0) form factors
由: Lai, A, et al.
出版: (2007)

A precise measurement of the direct CP violation parameter Re(ε′/ε)
由: Lai, A, et al.
出版: (2001)

A precise measurement of the direct CP violation parameter Re(epsilon '/epsilon)
由: Lai, A, et al.
出版: (2001)

Measurement of the K-L -> e(+)e(-)e(+)e(-) decay rate
由: Lai, A, et al.
出版: (2005)

A measurement of the K-S lifetime
由: Lai, A, et al.
出版: (2002)

A measurement of the KS lifetime
由: Lai, A, et al.
出版: (2002)

Observation of the decay K-S -> pi(+)pi(-)e(+)e(-)
由: Lai, A, et al.
出版: (2000)

Measurement of the quadratic slope parameter in the K-L -> 3 pi(0) decay Dalitz plot
由: Lai, A, et al.
出版: (2001)

Precision measurement of the Ξ0 mass and the branching ratios of the decays Ξ0 → Λγ and Ξ0 → ∑0γ
由: Fanti, V, et al.
出版: (2000)

Measurement of the decay rate and form factor parameter alpha(K*) in the decay K-L -> e(+)e(-)gamma
由: Fanti, V, et al.
出版: (1999)

Observation of the decay Ks → 2γ and measurement of the decay rates KL → 2γ and KS → 2γ
由: Burkhardt, H, et al.
出版: (1987)

Measurement of the decay rate and the parameter alpha(K)* of the decay K-L ->mu mu gamma
由: Fanti, V, et al.
出版: (1997)

Measurement of the decay rate and the parameter αK* of the decay KL → μμγ
由: Fanti, V, et al.
出版: (1997)

A measurement of the transverse polarization of Lambda-hyperons produced in inelastic pN-reactions at 450 GeV proton energy
由: Fanti, V, et al.
出版: (1999)

Search for the decay KL → π0π0γ
由: Barr, G, et al.
出版: (1994)

Direct search for light gluinos
由: Fanti, V, et al.
出版: (1999)

Searches for lepton number violation and resonances in K±→πμμ decays
由: J.R. Batley, et al.
出版: (2017-06-01)

A new measurement of direct CP violation in two pion decays of the neutral kaon
由: Fanti, V, et al.
出版: (1999)

Precision measurement of the Xi(0) mass and the branching ratios of the decays Xi(0) -> Lambda gamma and Xi(0) -> Sigma(0)gamma
由: Fanti, V, et al.
出版: (2000)