ITA
ENG

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

Authors

Aitala, EM Amato, S Anjos, JC Appel, JA Ashery, D Banerjee, S Bediaga, I Blaylock, G Bracker, SB Burchat, PR Burnstein, RA Carter, T Carvalho, HS Copty, NK Cremaldi, LM Darling, C Denisenko, K Devmal, S Fernandez, A Fox, GE Gagnon, P Gobel, C Gounder, K Halling, AM Herrera, G Hurvits, G James, C Kasper, PA Kwan, S Langs, DC Leslie, J Lundberg, B Magnin, J Massafferri, A MayTal-Beck, S Meadows, B Neto, JRTD Mihalcea, D Milburn, RH de Miranda, JM Napier, A Nguyen, A d'Oliveira, AB O'Shaughnessy, K Peng, KC Perera, LP Purohit, MV Quinn, B Radeztsky, S Rafatian, A Reay, NW Reidy, JJ dos Reis, AC Rubin, HA Sanders, DA Santha, AKS Santoro, AFS Schwartz, AJ Sheaff, M Sidwell, RA Slaughter, AJ Sokoloff, MD Solano, J Stanton, NR Stefanski, RJ Stenson, K Summers, DJ Takach, S Thorne, K Tripathi, AK Watanabe, S Weiss-Babai, R Wiener, J Witchey, N Wolin, E Yang, SM Yi, D Yoshida, S Zaliznyak, R Zhang, C

Citation

Em. Aitala et al., Experimental evidence for a light and broad scalar resonance in D+ -> pi(-)pi(+)pi(+) decay, PHYS REV L, 86(5), 2001, pp. 770-774

Citations number

Categorie Soggetti

Physics

Journal title

PHYSICAL REVIEW LETTERS

ISSN journal

00319007 → ACNP

Volume

Issue

Year of publication

2001

Pages

770 - 774

Database

ISI

SICI code

0031-9007(20010129)86:5<770:EEFALA>2.0.ZU;2-W

Abstract

From a sample of 1172 +/- 61 D+ --> pi (-) pi (+) pi (+) decays, we find Ga mma (D+ --> pi (-) pi (+) pi (+))/Gamma (D+ --> K- pi (+) pi (+)) = 0.0311 +/- 0.0018(-0.0026)(+0.0016). Using a coherent amplitude analysis to fit th e Dalitz plot of these decays, we find strong evidence that a scalar resona nce of mass 478(-23)(+24) +/- 17 MeV/c(2) and width 324(-40)(+42) +/- LI me V/c(2) accounts for approximately half or all decays.