Abstract
We re-examine a recent proposal for obtaining β using the measurements of the b → d penguin decays Bd0(t) → K0K0 and Bs0(t) → ΠKS, along with a theoretical assumption. We show that there are in fact three assumptions one can make, so that the method can in principle be used to extract α, β or γ. We also show that the best assumption is the one which yields γ. However, the theoretical error on this assumption is still 25-30%, which leads to an error on → of at least 20-25%. Given our current understanding of hadronic physics, it does not seem possible to reduce this error.
| Original language | English |
|---|---|
| Pages (from-to) | 1753-1766 |
| Number of pages | 14 |
| Journal | Modern Physics Letters A |
| Volume | 17 |
| Issue number | 27 |
| DOIs | |
| Publication status | Published - 2002 Sep 7 |
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All Science Journal Classification (ASJC) codes
- Nuclear and High Energy Physics
- Astronomy and Astrophysics
- Physics and Astronomy(all)
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Difficulties in obtaining weak phases from b → d penguin decays. / Datta, Alakabha; London, David; Kim, C. S.
In: Modern Physics Letters A, Vol. 17, No. 27, 07.09.2002, p. 1753-1766.Research output: Contribution to journal › Article
TY - JOUR
T1 - Difficulties in obtaining weak phases from b → d penguin decays
AU - Datta, Alakabha
AU - London, David
AU - Kim, C. S.
PY - 2002/9/7
Y1 - 2002/9/7
N2 - We re-examine a recent proposal for obtaining β using the measurements of the b → d penguin decays Bd0(t) → K0K0 and Bs0(t) → ΠKS, along with a theoretical assumption. We show that there are in fact three assumptions one can make, so that the method can in principle be used to extract α, β or γ. We also show that the best assumption is the one which yields γ. However, the theoretical error on this assumption is still 25-30%, which leads to an error on → of at least 20-25%. Given our current understanding of hadronic physics, it does not seem possible to reduce this error.
AB - We re-examine a recent proposal for obtaining β using the measurements of the b → d penguin decays Bd0(t) → K0K0 and Bs0(t) → ΠKS, along with a theoretical assumption. We show that there are in fact three assumptions one can make, so that the method can in principle be used to extract α, β or γ. We also show that the best assumption is the one which yields γ. However, the theoretical error on this assumption is still 25-30%, which leads to an error on → of at least 20-25%. Given our current understanding of hadronic physics, it does not seem possible to reduce this error.
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UR - http://www.scopus.com/inward/citedby.url?scp=0037037273&partnerID=8YFLogxK
U2 - 10.1142/S0217732302008253
DO - 10.1142/S0217732302008253
M3 - Article
AN - SCOPUS:0037037273
VL - 17
SP - 1753
EP - 1766
JO - Modern Physics Letters A
JF - Modern Physics Letters A
SN - 0217-7323
IS - 27
ER -