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Remarks on study of X(3872) from effective field theory with pion-exchange interaction.
- Source :
-
Physical Review D: Particles, Fields, Gravitation & Cosmology . Feb2015, Vol. 91 Issue 3, p1-8. 8p. - Publication Year :
- 2015
-
Abstract
- In a recent paper [P. Wang and X.-G. Wang, Phys. Rev. Lett. 111, 042002 (2013)], the charmonium state X(3872) is studied in the framework of an effective field theory. In that work it is claimed that (i) the one-pion exchange (OPE) alone provides sufficient binding to produce the X as a shallow bound state at the D0D*0 threshold, (ii) short-range dynamics (described by a contact interaction) provides only moderate corrections to the OPE, and (iii) the X-pole disappears as the pion mass is increased slightly and therefore the X should not be seen on the lattice, away from the pion physical mass point, if it were a molecular state. In this paper we demonstrate that the results of P. Wang and X.-G. Wang suffer from technical as well as conceptual problems and therefore do not support the conclusions drawn by the authors. [ABSTRACT FROM AUTHOR]
- Subjects :
- *CHARMONIUM
*FIELD theory (Physics)
*PIONS
*ION exchange (Chemistry)
*LATTICE theory
Subjects
Details
- Language :
- English
- ISSN :
- 24700010
- Volume :
- 91
- Issue :
- 3
- Database :
- Academic Search Index
- Journal :
- Physical Review D: Particles, Fields, Gravitation & Cosmology
- Publication Type :
- Periodical
- Accession number :
- 102449202
- Full Text :
- https://doi.org/10.1103/PhysRevD.91.034002