Heavy quark spin structure in Z_b resonances

Details Heavy quark spin structure in Z_b resonances Heavy quark spin structure in Z_b resonances

2011-05-23

arxiv.org/abs/1105.4473v2

Physics

High Energy Physics

High Energy Physics - Phenomenology

4 pages

Scientific paper

We discuss the heavy quark spin structure of the recently observed `twin' resonances $Z_b(10610)$ and $Z_b(10650)$ assuming that these are mostly of a `molecular' type, i.e. that their internal dynamics is dominated by the coupling to meson pairs $B^* \bar B - B {\bar B}^*$ and $B^* {\bar B}^*$. We find that the state of the $b \bar b$ pair within the $Z_b(10610)$ and $Z_b(10650)$ resonances is a mixture of a spin-triplet and a spin-singlet of equal amplitude and with the phase orthogonal between the two resonances. Such a structure gives rise to specific relations between observable amplitudes that are in agreement with the data obtained recently by Belle. We also briefly discuss possible properties of the isotopically singlet counterparts of the newly found resonances, and also of their $C$ ($G$) parity opposites that likely exist in the same mass range near the open $B$ flavor threshold.

Affiliated with

Also associated with

No associations

Rating

Heavy quark spin structure in Z_b resonances 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 Heavy quark spin structure in Z_b resonances, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Heavy quark spin structure in Z_b resonances will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-22464