Experimental evidence for a light and broad scalar resonance in D(+) --> pi(-)pi(+)pi(+) decay

E M Aitala; S Amato; J C Anjos; J A Appel; D Ashery; S Banerjee; I Bediaga; G Blaylock; S B Bracker; P R Burchat; R A Burnstein; T Carter; H S Carvalho; N K Copty; L M Cremaldi; C Darling; K Denisenko; S Devmal; A Fernandez; G F Fox; P Gagnon; C Gobel; K Gounder; A M Halling; G Herrera; G Hurvits; C James; P A Kasper; S Kwan; D C Langs; J Leslie; B Lundberg; J Magnin; A Massafferri; S MayTal-Beck; B Meadows; J R de Mello Neto; D Mihalcea; R H Milburn; J M de Miranda; A Napier; A Nguyen; A B d'Oliveira; K O'Shaughnessy; K C Peng; L P Perera; M V Purohit; B Quinn; S Radeztsky; A Rafatian; N W Reay; J J Reidy; A C dos Reis; H A Rubin; D A Sanders; A K Santha; A F Santoro; A J Schwartz; M Sheaff; R A Sidwell; A J Slaughter; M D Sokoloff; J Solano; N R Stanton; R J Stefanski; K Stenson; D J Summers; S Takach; K Thorne; A K Tripathi; S Watanabe; R Weiss-Babai; J Wiener; N Witchey; E Wolin; S M Yang; D Yi; S Yoshida; R Zaliznyak; C Zhang; Fermilab E791 Collaboration

doi:10.1103/PhysRevLett.86.770

Experimental evidence for a light and broad scalar resonance in D(+) --> pi(-)pi(+)pi(+) decay

Phys Rev Lett. 2001 Jan 29;86(5):770-4. doi: 10.1103/PhysRevLett.86.770.

Authors

E M Aitala¹, S Amato, J C Anjos, J A Appel, D Ashery, S Banerjee, I Bediaga, G Blaylock, S B Bracker, P R Burchat, R A Burnstein, T Carter, H S Carvalho, N K Copty, L M Cremaldi, C Darling, K Denisenko, S Devmal, A Fernandez, G F Fox, P Gagnon, C Gobel, K Gounder, A M Halling, G Herrera, G Hurvits, C James, P A Kasper, S Kwan, D C Langs, J Leslie, B Lundberg, J Magnin, A Massafferri, S MayTal-Beck, B Meadows, J R de Mello Neto, D Mihalcea, R H Milburn, J M de Miranda, A Napier, A Nguyen, A B d'Oliveira, K O'Shaughnessy, K C Peng, L P Perera, M V Purohit, B Quinn, S Radeztsky, A Rafatian, N W Reay, J J Reidy, A C dos Reis, H A Rubin, D A Sanders, A K Santha, A F Santoro, A J Schwartz, M Sheaff, R A Sidwell, A J Slaughter, M D Sokoloff, J Solano, N R Stanton, R J Stefanski, K Stenson, D J Summers, S Takach, K Thorne, A K Tripathi, S Watanabe, R Weiss-Babai, J Wiener, N Witchey, E Wolin, S M Yang, D Yi, S Yoshida, R Zaliznyak, C Zhang; Fermilab E791 Collaboration

Affiliation

¹ University of Mississippi-Oxford, 38677, USA.

PMID: 11177936
DOI: 10.1103/PhysRevLett.86.770

Abstract

From a sample of 1172 +/- 61 D(+)-->pi(-)pi(+)pi(+) decays, we find gamma(D(+)-->pi(-)pi(+)pi(+))/gamma(D(+)-->K-pi(+)pi(+)) = 0.0311 +/- 0.0018(+0.0016)(-0.0026). Using a coherent amplitude analysis to fit the Dalitz plot of these decays, we find strong evidence that a scalar resonance of mass 478(+24)(-23) +/- 17 MeV/c(2) and width 324(+42)(-40) +/- 21 MeV/c(2) accounts for approximately half of all decays.