Measuring the a0-a2 pion scattering lengths through K→3π decays

被引：0

作者：

Scimemi, Ignazio ^{[1
]}

Gamiz, Elvira ^{[2
]}

Prades, Joaquim ^{[3
]}

机构：

[1] Univ Politecn Valencia, CSIC, IFIC, Dept Fis Teor, E-46071 Valencia, Spain

[2] Univ Illinois, Dept Phys, Urbana, IL 61801 USA

[3] CERN, Dept Phys, Theory Unit, CH-1211 Geneva, Switzerland

来源：

NUCLEAR PHYSICS B-PROCEEDINGS SUPPLEMENTS | 2007年 / 174卷

关键词：

D O I：

10.1016/j.nuclphysbps.2007.08.098

中图分类号：

O412 [相对论、场论]; O572.2 [粒子物理学];

学科分类号：

摘要：

We discuss the recent Cabibbo's proposal to measure the pi pi scattering lengths combination a(0) - a(2) from the cusp effect in the pi(0)pi(0) energy spectrum at threshold for K+ -> pi(0)pi(0)pi(+) and K-L -> pi(0)pi(0)pi(0). We estimate the theoretical uncertainty of the a(0) - a(2) determination at NLO in our approach and obtain that it is not smaller than 5% for K+ -> pi(0)pi(0)pi(+). One gets similar theoretical uncertainties if the neutral K-L -> pi(0)pi(0)pi(0) decay data below threshold axe used instead. For this decay, there axe very large theoretical uncertainties above threshold due to cancellations and data above threshold cannot be used to get the scattering lengths.

引用

页码：105 / 108

页数：4

共 50 条

[41] STUDY OF FORMFACTORS IN K0MU3 DECAYS
ALBRECHT, KF
DEAK, F
GENCHEV, V
GRIGALAS.TS
GUSKOV, BN
HLADKY, J
IVANCHEN.IM
KEKELIDZ.VD
KISS, D
KRIVOKHI.VG
KUHTIN, VV
LIKHACHE.MF
MAJOR, P
MEYER, A
NAGY, E
NOVAK, M
PROKES, A
RYSEK, HE
SALOMATI.YI
SAVIN, IA
SILVESTR.LV
SIMONOV, VE
TAKHTAMY.GG
TODOROV, P
URBAN, L
VESZTERG.G
VOVENKO, AS
PHYSICS LETTERS B, 1974, B 48 (04) : 393 - 396
[42] First determination of f+(0)|Vus| from a combined analysis of τ → Kπντ decay and πK scattering with constraints from Kℓ3 decays
Véronique Bernard
Journal of High Energy Physics, 2014
[43] ON THE SU(3) AND PCAC EVALUATION OF THE K0-KBAR0 MATRIX ELEMENT AND K-]2-PI DECAYS
TRAMPETIC, J
PHYSICS LETTERS B, 1985, 163 (5-6) : 374 - 378
[44] Pion-pion scattering lengths from Ke4 and Cusp at NA48/2 experiment
Lamanna, G.
NUCLEAR PHYSICS B-PROCEEDINGS SUPPLEMENTS, 2009, 186 : 322 - 325
[45] T = 0 AND T = 2 PI-PI SCATTERING LENGTHS
MINGUZZI, A
NUOVO CIMENTO A, 1968, 53 (04): : 1053 - +
[46] SEARCH FOR CP NONCONSERVATION IN K0/2 DECAYS
ABASHIAN, A
SMITH, JH
NEFKENS, BMK
ABRAMS, RJ
FISHER, GP
CARPENTER, DW
PHYSICAL REVIEW LETTERS, 1964, 13 (07) : 243 - &
[47] SOME COMMENTS ON LOVELACE-VENEZIANO MODEL OF K AND ETA 3 PION DECAYS
SUTHERLA.DG
NUCLEAR PHYSICS B, 1969, B 13 (01) : 45 - &
[48] The evaluation of the branching ratios of the decays φ(1020)→2π+2π−π0, π+π−3π0
N. N. Achasov
A. A. Kozhevnikov
Journal of Experimental and Theoretical Physics Letters, 2004, 79 : 13 - 15
[49] The evaluation of the branching ratios of the decays φ(1020)→2π+2π-π0, π+π-3π0
Achasov, NN
Kozhevnikov, AA
JETP LETTERS, 2004, 79 (01) : 13 - 15
[50] MODEL CALCULATIONS FOR I=0 AND I=2 S-WAVE PION-PION SCATTERING
KRETZSCH.M
BULLETIN OF THE AMERICAN PHYSICAL SOCIETY, 1968, 13 (11): : 1418 - &

← 1 2 3 4 5 →