High Energy Physics Journal Club
Report on: K -> (pi pi)_{I=2} decays and twisted boundary conditions
by Nilmani Mathur
Friday, March 26, 2010
from
to
(Asia/Kolkata)
at Colaba Campus ( A-304 )
at Colaba Campus ( A-304 )
Description |
C.h.Kim, C.T.Sachrajda (Submitted on 16 Mar 2010) Abstract: We propose a new method to evaluate the Lellouch-Luescher factor which relates the Delta I=3/2 K -> pi pi matrix elements computed on a finite lattice to the physical (infinite-volume) decay amplitudes. The method relies on the use of partially twisted boundary conditions, which allow the s-wave pi pi phase shift to be computed as an almost continuous function of the centre-of-mass relative momentum and hence for its derivative to be evaluated. We successfully demonstrate the feasibility of the technique in an exploratory computation. |
Participants | Debasish Banerjee; Raju Bathija; Rajeev Bhalerao; Biplob Bhattacharjee; Saumen Datta; Amol Dighe; Rajiv Gavai; Sourendu Gupta; Vinod Joshi; Sridhar K.; Padmanath M.; Jyotirmoy Maiti; Nilmani Mathur; Subroto Pal; Sreerup Raychaudhuri; Anurag Tripathy |
Material: |
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