Use and misuse of ChPT in the heavy-light systems
| dc.creator | Becirevic, Damir | |
| dc.creator | Fajfer, Svjetlana | |
| dc.creator | Kamenik, Jernej | |
| dc.date | 2007-10-18 | |
| dc.date.accessioned | 2026-07-07T11:53:40Z | |
| dc.date.available | 2026-07-07T11:53:40Z | |
| dc.description | We discuss the range of validity of ChPT when applied to the systems of heavy-light mesons. Having in mind the recent experimental evidence according to which the heavy-light scalar and axial states are closer to the ground states than anticipated, we revisited the prediction for the chiral behavior of the B-Bbar mixing amplitude and examined the impact of nearness of the positive parity states. We conclude that the standard ChPT expressions with Nf=3 light flavours are not useful in guiding the extrapolation of hadronic quantities computed on the lattice. Instead those derived in HMChPT with Nf=2, i.e., including only the pion loops, are still adequate as long as they are applied to the pions lighter than 350 MeV, or the quarks lighter than a third of the physical strange quark mass. | |
| dc.description | 7 pages, contribution to the proceedings of "Lattice 2007" | |
| dc.identifier | https://arxiv.org/abs/0710.3496 | |
| dc.identifier | http://arxiv.org/abs/0710.3496 | |
| dc.identifier | PoSLAT2007:063,2007 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/204620 | |
| dc.subject | High Energy Physics - Lattice | |
| dc.subject | High Energy Physics - Phenomenology | |
| dc.title | Use and misuse of ChPT in the heavy-light systems | |
| dc.type | text |