The $l=1$ Hyperfine Splitting in Bottomium as a Precise Probe of the QCD Vacuum.

Physics – High Energy Physics – High Energy Physics - Phenomenology

Scientific paper

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

12 pages, 2 postscript figures, typeset with ReVTeX

Scientific paper

10.1016/0370-2693(95)00429-O

By relating fine and hyperfine spittings for l=1 states in bottomium we can factor out the less tractable part of the perturbative and nonperturbative effects. Reliable predictions for one of the fine splittings and the hyperfine splitting can then be made calculating in terms of the remaining fine splitting, which is then taken from experiment; perturbative and nonperturbative corrections to these relations are under full control. The method (which produces reasonable results even for the $c{\bar c}$ system) predicts a value of 1.5 MeV for the $(s=1)-(s=0)$ splitting in $b{\bar b}$, opposite in sign to that in $c{\bar c}$. For this result the contribution of the gluon condensate $<\alpha_s G^2>$ is essential, as any model (in particular potential models) which neglects this would give a negative $b{\bar b}$ hyperfine splitting.

No associations

LandOfFree

Say what you really think

Search LandOfFree.com for scientists and scientific papers. Rate them and share your experience with other people.

Rating

The $l=1$ Hyperfine Splitting in Bottomium as a Precise Probe of the QCD Vacuum. does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with The $l=1$ Hyperfine Splitting in Bottomium as a Precise Probe of the QCD Vacuum., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The $l=1$ Hyperfine Splitting in Bottomium as a Precise Probe of the QCD Vacuum. will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFWR-SCP-O-198426

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.