The width difference of BD mesons

Amol Dighe, Tobias Hurth, Choong Sun Kim, Tadashi Yoshikawa

Research output: Contribution to journalConference article

Abstract

We estimate ?Gd/Gd, including 1/mb contributions and part of the next-to-leading order QCD corrections. We find that adding the latter corrections decreases the value of ?Gd/Gd computed at the leading order by a factor of almost 2. We also show that under certain conditions an upper bound on the value of ?Gd/Gd in the presence of new physics can be derived. With the high statistics and accurate time resolution of the upcoming LHC experiment, the measurement of ?Gd seems to be possible. This measurement would be important for an accurate measurement of sin(2ß) at the LHC. In addition, we point out the possibility that the measurement of width difference leads to a clear signal for new physics.

Original languageEnglish
JournalProceedings of Science
Volume7
Publication statusPublished - 2001 Jan 1
Event2001 International Europhysics Conference on High Energy Physics, HEP 2001 - Budapest, Hungary
Duration: 2001 Jul 122001 Jul 18

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mesons
physics
quantum chromodynamics
statistics
estimates

All Science Journal Classification (ASJC) codes

  • General

Cite this

Dighe, A., Hurth, T., Kim, C. S., & Yoshikawa, T. (2001). The width difference of BD mesons. Proceedings of Science, 7.
Dighe, Amol ; Hurth, Tobias ; Kim, Choong Sun ; Yoshikawa, Tadashi. / The width difference of BD mesons. In: Proceedings of Science. 2001 ; Vol. 7.
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Dighe, A, Hurth, T, Kim, CS & Yoshikawa, T 2001, 'The width difference of BD mesons', Proceedings of Science, vol. 7.

The width difference of BD mesons. / Dighe, Amol; Hurth, Tobias; Kim, Choong Sun; Yoshikawa, Tadashi.

In: Proceedings of Science, Vol. 7, 01.01.2001.

Research output: Contribution to journalConference article

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T1 - The width difference of BD mesons

AU - Dighe, Amol

AU - Hurth, Tobias

AU - Kim, Choong Sun

AU - Yoshikawa, Tadashi

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N2 - We estimate ?Gd/Gd, including 1/mb contributions and part of the next-to-leading order QCD corrections. We find that adding the latter corrections decreases the value of ?Gd/Gd computed at the leading order by a factor of almost 2. We also show that under certain conditions an upper bound on the value of ?Gd/Gd in the presence of new physics can be derived. With the high statistics and accurate time resolution of the upcoming LHC experiment, the measurement of ?Gd seems to be possible. This measurement would be important for an accurate measurement of sin(2ß) at the LHC. In addition, we point out the possibility that the measurement of width difference leads to a clear signal for new physics.

AB - We estimate ?Gd/Gd, including 1/mb contributions and part of the next-to-leading order QCD corrections. We find that adding the latter corrections decreases the value of ?Gd/Gd computed at the leading order by a factor of almost 2. We also show that under certain conditions an upper bound on the value of ?Gd/Gd in the presence of new physics can be derived. With the high statistics and accurate time resolution of the upcoming LHC experiment, the measurement of ?Gd seems to be possible. This measurement would be important for an accurate measurement of sin(2ß) at the LHC. In addition, we point out the possibility that the measurement of width difference leads to a clear signal for new physics.

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Dighe A, Hurth T, Kim CS, Yoshikawa T. The width difference of BD mesons. Proceedings of Science. 2001 Jan 1;7.