Pith. sign in

REVIEW

New, high statistics measurement of the K+ -> pi0 e+ nu (Ke3) branching ratio

Not yet reviewed by Pith; the record is open.

Re-run · record.json Download PDF Read on arXiv ↗

This paper has not been read by Pith yet. Machine review is queued; the pith claim, tier, and objections will appear here once it completes.

SPECIMEN: schema-true, not a live event

T0 review · schema-true

One-sentence machine reading of the paper's core claim.

pith:XXXXXXXX · record.json · timestamp

arxiv hep-ex/0305042 v3 pith:UKOPKGRJ submitted 2003-05-16 hep-ex

A. Sher , R. Appel , G.S. Atoyan , B. Bassalleck , D.R. Bergman , N. Cheung , S. Dhawan , H. Do
show 20 more authors
J. Egger S. Eilerts H. Fischer W. Herold V.V. Issakov H. Kaspar D.E. Kraus D. M. Lazarus P. Lichard J. Lowe J. Lozano H. Ma W. Majid S. Pislak A.A. Poblaguev P. Rehak Aleksey Sher J.A. Thompson P. Truol M.E. Zeller
This is my paper · ORCID
classification hep-ex
keywords branchingdatadecaysgammagroupmatrixparticlephotons
verification ladder T0 review T1 audit T2 compute T3 formal
0 comments
abstract

E865 at the Brookhaven National Laboratory AGS collected about 70,000 K+(e3) events with the purpose of measuring the relative K+(e3) branching ratio. The pi0 in all the decays was detected using the e+e- pair from pi0 -> e+e-gamma decay and no photons were required. Using the Particle Data Group branching ratios for the normalization decays we obtain BR(K+(e3(gamma))=(5.13+/-0.02(stat)+/-0.09(sys)+/-0.04(norm))%, where $K+(e3(gamma)) includes the effect of virtual and real photons. This result is 2.3 sigma higher than the current Particle Data Group value. The implications of this result for the $V_{us}$ element of the CKM matrix, and the matrix's unitarity are discussed.

Discussion (0). Continue with ORCID to comment.

Pith tools