Record number :
916563
Title of article :
Finite-volume two-pion amplitudes in the I=0 channel
Author/Authors :
C.-J.D. Lin، نويسنده , , G. Martinelli، نويسنده , , E. Pallante، نويسنده , , C.T. Sachrajda، نويسنده , , G. Villadoro ، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2003
Pages :
13
From page :
229
To page :
241
Abstract :
We perform a calculation in one-loop chiral perturbation theory of the two-pion matrix elements and correlation functions of an I=0 scalar operator, in finite and infinite volumes for both full and quenched QCD. We show that major difficulties arise in the quenched theory due to the lack of unitarity. Similar problems are expected for quenched lattice calculations of K→ππ amplitudes with ΔI=1/2. Our results raise the important question of whether it is consistent to study K→ππ amplitudes beyond leading order in chiral perturbation theory in quenched or partially quenched QCD.
Journal title :
PHYSICS LETTERS B
Serial Year :
2003
Link To Document :
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