publication . Article . Other literature type . 2015

Form factors of the isovector scalar current and the \eta \pi

B. Moussallam; B. Moussallam; M. Albaladejo;
Open Access
  • Published: 13 Oct 2015 Journal: The European Physical Journal C, volume 75 (issn: 1434-6044, eissn: 1434-6052, Copyright policy)
  • Publisher: Springer Science and Business Media LLC
Abstract
A model for S-wave eta pi scattering is proposed which could be realistic in an energy range from threshold up to above 1 GeV, where inelasticity is dominated by the K (K) over bar channel. The T-matrix, satisfying two-channel unitarity, is given in a form which matches the chiral expansion results at order p(4) exactly for the eta pi -> eta pi, eta pi -> K (K) over bar amplitudes and approximately for K (K) over bar -> K (K) over bar. It contains six phenomenological parameters. Asymptotic conditions are imposed which ensure a minimal solution of the Muskhelishvili-Omnes problem, thus allowing one to compute the eta pi and K (K) over bar form factor matrix elem...
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doi: 10.1140/epjc/s10052-015-3715-z
handle: 10261/130640
Subjects
free text keywords: Physics and Astronomy (miscellaneous), Engineering (miscellaneous), [PHYS.HPHE]Physics [physics]/High Energy Physics - Phenomenology [hep-ph], Chiral perturbation theory, Final state interaction, Particle physics, Pi, Physics, Scalar (physics), Isovector
Related Organizations
Funded by
EC| HADRONPHYSICS3
Project
HADRONPHYSICS3
Study of Strongly Interacting Matter
  • Funder: European Commission (EC)
  • Project Code: 283286
  • Funding stream: FP7 | SP4 | INFRA
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62 references, page 1 of 5

1. V. Bernard, N. Kaiser, U.G. Meißner, Phys. Rev. D 44, 3698 (1991)

2. J. Kambor, C. Wiesendanger, D. Wyler, Nucl. Phys. B 465, 215 (1996). arXiv:hep-ph/9509374

3. A. Anisovich, H. Leutwyler, Phys. Lett. B 375, 335 (1996). arXiv:hep-ph/9601237

4. N. Achasov, S. Devyanin, G. Shestakov, Phys. Lett. B 88, 367 (1979)

5. A.M. Abdel-Rehim, D. Black, A.H. Fariborz, J. Schechter, Phys. Rev. D 67, 054001 (2003). arXiv:hep-ph/0210431

6. J. Oller, E. Oset, J. Peláez, Phys. Rev. D 59, 074001 (1999). arXiv:hep-ph/9804209

7. A. Gómez Nicola, J. Peláez, Phys. Rev. D 65, 054009 (2002). arXiv:hep-ph/0109056

8. D. Black, A.H. Fariborz, J. Schechter, Phys. Rev. D 61, 074030 (2000). arXiv:hep-ph/9910351

9. A. Furman, L. Les´niak, Phys. Lett. B 538, 266 (2002). arXiv:hep-ph/0203255

10. J.F. Donoghue, J. Gasser, H. Leutwyler, Nucl. Phys. B 343, 341 (1990)

11. J. Gasser, H. Leutwyler, Phys. Lett. B 125, 325 (1983)

12. J. Gasser, U.G. Meißner, Nucl. Phys. B 357, 90 (1991)

13. B. Moussallam, Eur. Phys. J. C 14, 111 (2000). arXiv:hep-ph/9909292

14. G. Colangelo, J. Gasser, H. Leutwyler, Nucl. Phys. B 603, 125 (2001). arXiv:hep-ph/0103088

15. F. Ynduráin, Phys. Lett. B 612, 245 (2005). arXiv:hep-ph/0501104

62 references, page 1 of 5
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