Abstract
We discuss the rare decay K{sub L}{yields}{pi}{sup 0}{gamma}{gamma}. Although the recently measured 2{gamma}-invariant-mass distribution is in quite good agreement with the lowest-order chiral perturbation theory prediction, there seems to be a discrepancy with the calculated branching ratio. We extend the previous computations to next-to-leading order, O(p{sup 6}). The two dominant mechanisms at this order are emphasized: the two-pion intermediate state and vector meson exchange. (authors).
Cohen, A G;
[1]
Ecker, G;
[2]
Pich, A
[3]
- Boston Univ., MA (United States). Dept. of Physics
- Vienna Univ. (Austria). Inst. fuer Theoretische Physik
- European Organization for Nuclear Research, Geneva (Switzerland)
Citation Formats
Cohen, A G, Ecker, G, and Pich, A.
Unitarity and K{sub L} {yields} {pi}{sup 0}{gamma}{gamma}.
Austria: N. p.,
1993.
Web.
Cohen, A G, Ecker, G, & Pich, A.
Unitarity and K{sub L} {yields} {pi}{sup 0}{gamma}{gamma}.
Austria.
Cohen, A G, Ecker, G, and Pich, A.
1993.
"Unitarity and K{sub L} {yields} {pi}{sup 0}{gamma}{gamma}."
Austria.
@misc{etde_10127923,
title = {Unitarity and K{sub L} {yields} {pi}{sup 0}{gamma}{gamma}}
author = {Cohen, A G, Ecker, G, and Pich, A}
abstractNote = {We discuss the rare decay K{sub L}{yields}{pi}{sup 0}{gamma}{gamma}. Although the recently measured 2{gamma}-invariant-mass distribution is in quite good agreement with the lowest-order chiral perturbation theory prediction, there seems to be a discrepancy with the calculated branching ratio. We extend the previous computations to next-to-leading order, O(p{sup 6}). The two dominant mechanisms at this order are emphasized: the two-pion intermediate state and vector meson exchange. (authors).}
place = {Austria}
year = {1993}
month = {Jan}
}
title = {Unitarity and K{sub L} {yields} {pi}{sup 0}{gamma}{gamma}}
author = {Cohen, A G, Ecker, G, and Pich, A}
abstractNote = {We discuss the rare decay K{sub L}{yields}{pi}{sup 0}{gamma}{gamma}. Although the recently measured 2{gamma}-invariant-mass distribution is in quite good agreement with the lowest-order chiral perturbation theory prediction, there seems to be a discrepancy with the calculated branching ratio. We extend the previous computations to next-to-leading order, O(p{sup 6}). The two dominant mechanisms at this order are emphasized: the two-pion intermediate state and vector meson exchange. (authors).}
place = {Austria}
year = {1993}
month = {Jan}
}