Enhanced non-quark-antiquark and non-glueball Nc behavior of light scalar mesons

Details Enhanced non-quark-antiquark and non-glueball Nc behavior of light scalar mesons Enhanced non-quark-antiquark and non-glueball Nc behavior of light scalar mesons

2011-07-21

arxiv.org/abs/1107.4200v2

Phys. Rev. D 84, 074003 (2011)

Physics

High Energy Physics

High Energy Physics - Phenomenology

Discussion disfavoring a glueball interpretation added. Version published in Phys. Rev. D

Scientific paper

We show that the latest and very precise dispersive data analyses require a large and very unnat- ural fine-tuning of the 1/Nc expansion at Nc = 3 if the f_0(600) and K(800) light scalar mesons are to be considered predominantly quark-antiquark states, which is not needed for light vector mesons. For this, we use scattering observables whose 1/Nc corrections are suppressed further than one power of 1/Nc for quark-antiquark or glueball states, thus enhancing contributions of other nature. This is achieved without using unitarized ChPT, but if it is used we can also show that it is not just that the coefficients of the 1/Nc expansion are unnatural, but that the expansion itself does not even follow the expected 1/Nc scaling of a glueball or a quark-antiquark meson.

Affiliated with

Also associated with

No associations

Rating

Enhanced non-quark-antiquark and non-glueball Nc behavior of light scalar mesons 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 Enhanced non-quark-antiquark and non-glueball Nc behavior of light scalar mesons, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Enhanced non-quark-antiquark and non-glueball Nc behavior of light scalar mesons will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-687631