Evidence of new states decaying into Xi*(c)pi

Authors
Csorna, SE Danko, I McLean, KW Xu, Z Godang, R Bonvicini, G Cinabro, D Dubrovin, M McGee, S Zhou, GJ Bornheim, A Lipeles, E Pappas, SP Schmidtler, M Shapiro, A Sun, WM Weinstein, AJ Jaffe, DE Masek, G Paar, HP Asner, DM Eppich, A Hill, TS Morrison, RJ Briere, RA Chen, GP Ferguson, T Vogel, H Gritsan, A Alexander, JP Baker, R Bebek, C Berger, BE Berkelman, K Blanc, F Boisvert, V Cassel, DG Drell, PS Duboscq, JE Ecklund, KM Ehrlich, R Foland, AD Graidarev, P Galik, RS Gibbons, L Gittelman, B Gray, SW Hartill, DL Heltsley, BK Hopman, PI Hsu, L Jones, CD Kandaswamy, J Kreinick, DL Lohner, M Magerkurth, A Meyer, TO Mistry, NB Nordberg, E Palmer, M Patterson, JR Peterson, D Riley, D Romano, A Thayer, JG Urner, D Valant-Spaight, B Viehhauser, G Warburton, A Avery, P Prescott, C Rubiera, AI Stoeck, H Yelton, J Brandenburg, G Ershov, A Kim, DYJ Wilson, R Bergfeld, T Eisenstein, BI Ernst, J Gladding, GE Gollin, GD Hans, RM Johnson, E Karliner, I Marsh, MA Plager, C Sedlack, C Selen, M Thaler, JJ Williams, J Edwards, KW Janicek, R Patel, PM Sadoff, AJ Ammar, R Bean, A Besson, D Zhao, X Anderson, S Frolov, VV Kubota, Y Lee, SJ Mahapatra, R O'Neill, JJ Poling, R Riehle, T Smith, A Stepaniak, CJ Urheim, J Ahmed, S Alam, MS Athar, SB Jian, L Ling, L Saleem, M Timm, S Wappler, F Anastassov, A Eckhart, E Gan, KK Gwon, C Hart, T Honscheid, K Hufnagel, D Kagan, H Kass, R Pedlar, TK Schwarthoff, H Thayer, JB von Toerne, E Zoeller, MM Richichi, SJ Severini, H Skubic, P Undrus, A Savinov, V Chen, S Fast, J Hinson, JW Lee, J Miller, DH Shibata, EI Shipsey, IPJ Pavlunin, V Cronin-Hennessy, D Lyon, AL Thorndike, EH Coan, TE Fadeyev, V Gao, YS Maravin, Y Narsky, I Stroynowski, R Ye, J Wlodek, T Artuso, M Ayad, R Boulahouache, C Bukin, K Dambasuren, E Majumder, G Moneti, GC Mountain, R Schuh, S Skwarnicki, T Stone, S Wang, JC Wolf, A Wu, J Kopp, S Kostin, M Mahmood, AH
Citation
Se. Csorna et al., Evidence of new states decaying into Xi*(c)pi, PHYS REV L, 86(19), 2001, pp. 4243-4246
Citations number
10
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Physics
Journal title
PHYSICAL REVIEW LETTERS
ISSN journal
0031-9007 → ACNP
Volume
86
Issue
19
Year of publication
2001
Pages
4243 - 4246
Database
ISI
SICI code
0031-9007(20010507)86:19<4243:EONSDI>2.0.ZU;2-5
Abstract
Using 13.7 fb(-1) of data recorded by the CLEO detector at Cornell Electron Storage Ring, we report evidence of two new charmed baryons: one decaying into Xi (0 ')(c)pi (+) with the subsequent decay Xi (0)(c)' --> Xi (0)(c)ga mma, and its isospin partner decaying into Xi (+)(c)' pi (-) followed by Xi (+)(c)' --> Xi (+)(c)gamma. We measure the following mass differences for the two states: M(Xi (0)(c)gamma pi (+)) - M(Xi (0)(c)) = 318.2 +/- 1.3 +/- 2.9 MeV and M(Xi (+)(c)gamma pi (-)) - M(Xi (+)(c)) = 324.0 +/- 1.3 +/- 3. 0 MeV. We interpret these new states as the J(P) = 1/2(-) Xi (c1) particles , the charmed-strange analogs of the Lambda (+)(c1)(2593).