Improving the measurement of the CKM phase ϕ2=α in B→ππ and B→ρρ decays
Abstract
CP-violating asymmetries in B →ππ and B →ρρ decays can help specify the weak phase Φ2=α of the Cabibbo–Kobayashi–Maskawa (CKM) matrix. We discuss the impact of improved measurements of these processes such as will be available in the near future, finding special value in better measurement of the time-dependent CP violation parameter S00 in B0→π0π0 and B0→ρ0ρ0. Reducing the errors on B →ρρ measurements by a factor of two can potentially lead to an error in Φ2=α just above 2°, at which level the ρ width and isospin-breaking corrections must be considered.
- Authors:
- Publication Date:
- Research Org.:
- Univ. of Chicago, IL (United States)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1402516
- Alternate Identifier(s):
- OSTI ID: 1465709
- Grant/Contract Number:
- FG02-13ER41598; FG02-13ER41958; SC0009924
- Resource Type:
- Published Article
- Journal Name:
- Physics Letters B
- Additional Journal Information:
- Journal Name: Physics Letters B Journal Volume: 763 Journal Issue: C; Journal ID: ISSN 0370-2693
- Publisher:
- Elsevier
- Country of Publication:
- Netherlands
- Language:
- English
- Subject:
- 72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
Citation Formats
Gronau, Michael, and Rosner, Jonathan L. Improving the measurement of the CKM phase ϕ2=α in B→ππ and B→ρρ decays. Netherlands: N. p., 2016.
Web. doi:10.1016/j.physletb.2016.10.041.
Gronau, Michael, & Rosner, Jonathan L. Improving the measurement of the CKM phase ϕ2=α in B→ππ and B→ρρ decays. Netherlands. https://doi.org/10.1016/j.physletb.2016.10.041
Gronau, Michael, and Rosner, Jonathan L. Thu .
"Improving the measurement of the CKM phase ϕ2=α in B→ππ and B→ρρ decays". Netherlands. https://doi.org/10.1016/j.physletb.2016.10.041.
@article{osti_1402516,
title = {Improving the measurement of the CKM phase ϕ2=α in B→ππ and B→ρρ decays},
author = {Gronau, Michael and Rosner, Jonathan L.},
abstractNote = {CP-violating asymmetries in B →ππ and B →ρρ decays can help specify the weak phase Φ2=α of the Cabibbo–Kobayashi–Maskawa (CKM) matrix. We discuss the impact of improved measurements of these processes such as will be available in the near future, finding special value in better measurement of the time-dependent CP violation parameter S00 in B0→π0π0 and B0→ρ0ρ0. Reducing the errors on B →ρρ measurements by a factor of two can potentially lead to an error in Φ2=α just above 2°, at which level the ρ width and isospin-breaking corrections must be considered.},
doi = {10.1016/j.physletb.2016.10.041},
journal = {Physics Letters B},
number = C,
volume = 763,
place = {Netherlands},
year = {Thu Dec 01 00:00:00 EST 2016},
month = {Thu Dec 01 00:00:00 EST 2016}
}
Free Publicly Available Full Text
Publisher's Version of Record
https://doi.org/10.1016/j.physletb.2016.10.041
https://doi.org/10.1016/j.physletb.2016.10.041
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Cited by: 6 works
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