S-wave pion-pion scattering in the stateT=0

1965 ◽  
Vol 36 (3) ◽  
pp. 1035-1038
Author(s):  
Ravinder Nath ◽  
L. K. Pande
Keyword(s):  
S Wave ◽  
Pion Scattering

S-wave kaon-pion scattering

1966 ◽  
Vol 41 (1) ◽  
pp. 48-66
Author(s):  
M. Huq
Keyword(s):  
S Wave ◽  
Pion Scattering

I = 2S-wave pion scattering phase shift with two flavor full QCD

2005 ◽  
Vol 20 (15) ◽  
pp. 3476-3479
Author(s):  
◽  
T. Yamazaki
Keyword(s):  
Phase Shift ◽  
Center Of Mass ◽  
Laboratory System ◽  
Lattice Calculation ◽  
S Wave ◽  
Mass System ◽  
Pion Scattering ◽  
Scattering Phase ◽  
Volume Method ◽  
The Continuum

We present a lattice calculation of the scattering phase shift for the I = 2 S -wave pion-pion system in the continuum limit with two-flavor dynamical effect. Calculations are made at three lattice spacings, using the finite volume method proposed by Lüscher in the center of mass system, and its extension to the laboratory system by Rummukainen and Gottlieb.

A model for S-wave pion-pion scattering consistent with rigorous constraints

1968 ◽  
Vol 28 (1) ◽  
pp. 41-43 ◽  
Author(s):  
G. Auberson ◽  
O. Piguet ◽  
G. Wanders
Keyword(s):  
S Wave ◽  
Pion Scattering

scholarly journals △S=1 Weak Transitions in Skyrme model Generalized up to Quartic Terms

2020 ◽  
pp. 558-562
Author(s):  
Rajesh Kumar
Keyword(s):  
Skyrme Model ◽  
Scattering Data ◽  
S Wave ◽  
Pion Scattering ◽  
Field Gradients ◽  
Wave Decay ◽  
Weak Transition ◽  
Weak Transitions

<p>We investigate △S=1 weak transition in the light of most general Skyrme type lagrangian containing terms up to quartic terms in field gradients. The additional parameters in the lagrangian are taken from pion-pion scattering data. Our decay amplitudes for anticommutator term in the Skyrme lagrangian shows much improvement over the Skyrme values. S-wave decay amplitudes are also reasonably reproduced in the model.</p>

scholarly journals Effect of coupled channels of the multi-channel pion-pion scattering in two-pion transitions of the Υ mesons

2015 ◽  
Vol 39 ◽  
pp. 1560090
Author(s):  
Yurii S. Surovtsev ◽  
Petr Bydžovský ◽  
Thomas Gutsche ◽  
Robert Kamiński ◽  
Valery E. Lyubovitskij ◽  
...  
Keyword(s):  
Scattering Amplitudes ◽  
Mass Spectra ◽  
Final States ◽  
S Wave ◽  
Wave Processes ◽  
Crystal Ball ◽  
Combined Analysis ◽  
Pion Scattering ◽  
Scalar Mesons ◽  
Coupled Channels

The effect of isoscalar S-wave processes [Formula: see text] is considered in the analysis of data (from the ARGUS, CLEO, CUSB, Crystal Ball, Belle, BABAR collaborations) on the bottomonia decays — [Formula: see text] ([Formula: see text]). It is shown that the dipion mass spectra of these decays are explained by the unified mechanism related to the contribution of the multichannel [Formula: see text] scattering in the final states of these reactions. Since in the analysis the multichannel [Formula: see text]-scattering amplitudes did not change in comparison with the ones in our combined analysis of data on the multichannel [Formula: see text] scattering and on the charmonia decays — [Formula: see text] and [Formula: see text] (from the Crystal Ball, DM2, Mark II, Mark III, and BES II) — the results confirm all our earlier conclusions on the scalar mesons.

S wave of pion-pion scattering from data on the reaction π − p → π 0 π 0 n

2004 ◽  
Vol 67 (7) ◽  
pp. 1355-1366 ◽  
Author(s):  
N. N. Achasov ◽  
G. N. Shestakov
Keyword(s):  
S Wave ◽  
Pion Scattering

S - wave pion - pion scattering length from reaction π− + p → πo + πo + n at 378 MeV

1970 ◽  
Vol 33 (7) ◽  
pp. 521-524 ◽  
Author(s):  
T. Maung ◽  
G.E. Masek ◽  
E. Miller ◽  
H. Ruderman ◽  
W. Vernon ◽  
...  
Keyword(s):  
Scattering Length ◽  
S Wave ◽  
Pion Scattering

S11 RESONANCES IN A COUPLED-CHANNEL DYNAMICAL MODEL

2005 ◽  
Vol 20 (08n09) ◽  
pp. 1656-1661 ◽  
Author(s):  
SHIN NAN YANG ◽  
GUAN-YEU CHEN ◽  
SABIT S. KAMALOV ◽  
L. TIATOR ◽  
D. DRECHSEL
Keyword(s):  
Pion Photoproduction ◽  
Dynamical Model ◽  
S Wave ◽  
Pion Scattering ◽  
A Value ◽  
Multipole Analysis ◽  
Coupled Channels ◽  
Self Consistent ◽  
The Masses ◽  
Coupled Channel

A self-consistent analysis of pion scattering and pion photoproduction within a coupled channels dynamical model is presented. The results indicate the existence of a third and a fourth S11 resonance with the masses 1846±47 and 2113±70 MeV . In the case of pion photoproduction, we found that background contributions to the imaginary part of the S-wave multipole become large and negative in the region of the S11(1535) resonance. Due to this fact, much larger resonance contributions are required in order to explain the results of the recent multipole analysis. For the first S11(1535) resonance we obtain a value of 72±2×10-3 GeV -1/2 for the electromagnetic helicity amplitude A1/2.

scholarly journals REMARK ON PION SCATTERING LENGTHS

2009 ◽  
Vol 24 (28) ◽  
pp. 2285-2289 ◽  
Author(s):  
DEIRDRE BLACK ◽  
AMIR H. FARIBORZ ◽  
RENATA JORA ◽  
NAE WOONG PARK ◽  
JOSEPH SCHECHTER ◽  
...  
Keyword(s):  
Perturbation Theory ◽  
Chiral Perturbation Theory ◽  
Scattering Length ◽  
Linear Sigma Model ◽  
Isotopic Spin ◽  
S Wave ◽  
Tree Amplitude ◽  
Chiral Perturbation ◽  
Pion Scattering ◽  
Scattering Lengths

First it is shown that the tree amplitude for pion–pion scattering in the minimal linear sigma model has an exact expression which is proportional to a geometric series in the quantity [Formula: see text], where mB is the sigma mass which appears in the Lagrangian and is the only a priori unknown parameter in the model. This induces an infinite series for every predicted scattering length in which each term corresponds to a given order in the chiral perturbation theory counting. It is noted that, perhaps surprisingly, the pattern, though not the exact values, of chiral perturbation theory predictions for both the isotopic spin 0 and isotopic spin 2 s-wave pion–pion scattering lengths to orders p2, p4 and p6 seems to agree with this induced pattern. The values of the p8 terms are also given for comparison with a possible future chiral perturbation theory calculation. Further aspects of this approach and future directions are briefly discussed.

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