New measurement of K+ e4 decay and the s-wave ΠΠ scattering length aOO

S Pislak; James Lowe

doi:10.1103/PhysRevLett.87.221801

New measurement of K+ e4 decay and the s-wave ΠΠ scattering length aOO

S Pislak, James Lowe

Physics and Astronomy

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2 Citations (Scopus)

Abstract

A sample of 4 x 10(5) events from the decay K(+)-->pi(+)pi(-)e(+)nu(e) (K(e4)) has been collected in experiment E865 at the Brookhaven Alternating Gradient Synchrotron. The analysis of these data yields new measurements of the K(e4) branching ratio [(4.11+/-0.01+/-0.11) x 10(-5)], the s-wave pi pi scattering length [a(0)(0) = 0.216+/-0.013(stat)+/-0.004(syst)+/-0.005(theor)], and the form factors F, G, and H of the hadronic current and their dependence on the invariant pi pi mass.

Original language	English
Pages (from-to)	221801
Number of pages	1
Journal	Physical Review Letters
Volume	87
Early online date	1 Nov 2001
DOIs	https://doi.org/10.1103/PhysRevLett.87.221801
Publication status	Published - 1 Nov 2001

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10.1103/PhysRevLett.87.221801

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title = "New measurement of K+ e4 decay and the s-wave ΠΠ scattering length aOO",

abstract = "A sample of 4 x 10(5) events from the decay K(+)-->pi(+)pi(-)e(+)nu(e) (K(e4)) has been collected in experiment E865 at the Brookhaven Alternating Gradient Synchrotron. The analysis of these data yields new measurements of the K(e4) branching ratio [(4.11+/-0.01+/-0.11) x 10(-5)], the s-wave pi pi scattering length [a(0)(0) = 0.216+/-0.013(stat)+/-0.004(syst)+/-0.005(theor)], and the form factors F, G, and H of the hadronic current and their dependence on the invariant pi pi mass.",

author = "S Pislak and James Lowe",

year = "2001",

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doi = "10.1103/PhysRevLett.87.221801",

language = "English",

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journal = "Physical Review Letters",

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AU - Pislak, S

AU - Lowe, James

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N2 - A sample of 4 x 10(5) events from the decay K(+)-->pi(+)pi(-)e(+)nu(e) (K(e4)) has been collected in experiment E865 at the Brookhaven Alternating Gradient Synchrotron. The analysis of these data yields new measurements of the K(e4) branching ratio [(4.11+/-0.01+/-0.11) x 10(-5)], the s-wave pi pi scattering length [a(0)(0) = 0.216+/-0.013(stat)+/-0.004(syst)+/-0.005(theor)], and the form factors F, G, and H of the hadronic current and their dependence on the invariant pi pi mass.

AB - A sample of 4 x 10(5) events from the decay K(+)-->pi(+)pi(-)e(+)nu(e) (K(e4)) has been collected in experiment E865 at the Brookhaven Alternating Gradient Synchrotron. The analysis of these data yields new measurements of the K(e4) branching ratio [(4.11+/-0.01+/-0.11) x 10(-5)], the s-wave pi pi scattering length [a(0)(0) = 0.216+/-0.013(stat)+/-0.004(syst)+/-0.005(theor)], and the form factors F, G, and H of the hadronic current and their dependence on the invariant pi pi mass.

U2 - 10.1103/PhysRevLett.87.221801

DO - 10.1103/PhysRevLett.87.221801

M3 - Article

C2 - 11736394

SN - 1079-7114

VL - 87

SP - 221801

JO - Physical Review Letters

JF - Physical Review Letters

ER -

New measurement of K+ e4 decay and the s-wave ΠΠ scattering length aOO

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