First search for the flavor changing neutral current decay D0-->gammagamma

T E Coan; Y S Gao; F Liu; Y Maravin; R Stroynowski; M Artuso; C Boulahouache; S Blusk; K Bukin; E Dambasuren; G C Moneti; R Mountain; H Muramatsu; R Nandakumar; T Skwarnicki; S Stone; J C Wang; A H Mahmood; S E Csorna; I Danko; G Bonvicini; D Cinabro; M Dubrovin; S McGee; A Bornheim; E Lipeles; S P Pappas; A Shapiro; W M Sun; A J Weinstein; R A Briere; G P Chen; T Ferguson; G Tatishvili; H Vogel; N E Adam; J P Alexander; K Berkelman; V Boisvert; D G Cassel; P S Drell; J E Duboscq; K M Ecklund; R Ehrlich; R S Galik; L Gibbons; B Gittelman; S W Gray; D L Hartill; B K Heltsley; L Hsu; C D Jones; J Kandaswamy; D L Kreinick; A Magerkurth; H Mahlke-Krüger; T O Meyer; N B Mistry; J R Patterson; D Peterson; J Pivarski; S J Richichi; D Riley; A J Sadoff; H Schwarthoff; M R Shepherd; J G Thayer; D Urner; T Wilksen; A Warburton; M Weinberger; S B Athar; P Avery; L Breva-Newell; V Potlia; H Stoeck; J Yelton; K Benslama; B I Eisenstein; G D Gollin; I Karliner; N Lowrey; C Plager; C Sedlack; M Selen; J J Thaler; J Williams; K W Edwards; R Ammar; D Besson; S Anderson; V V Frolov; D T Gong; Y Kubota; S Z Li; R Poling; A Smith; C J Stepaniak; J Urheim; Z Metreveli; K K Seth; A Tomaradze; P Zweber; S Ahmed; M S Alam; J Ernst; L Jian; M Saleem; F Wappler; K Arms; E Eckhart; K K Gan; C Gwon; K Honscheid; D Hufnagel; H Kagan; R Kass; T K Pedlar; E Von Toerne; M M Zoeller; H Severini; P Skubic; S A Dytman; J A Mueller; S Nam; V Savinov; S Chen; J W Hinson; J Lee; D H Miller; V Pavlunin; E I Shibata; I P J Shipsey; D Cronin-Hennessy; A L Lyon; C S Park; W Park; J B Thayer; E H Thorndike; CLEO Collaboration

doi:10.1103/PhysRevLett.90.101801

First search for the flavor changing neutral current decay D0-->gammagamma

Phys Rev Lett. 2003 Mar 14;90(10):101801. doi: 10.1103/PhysRevLett.90.101801. Epub 2003 Mar 12.

Authors

T E Coan¹, Y S Gao, F Liu, Y Maravin, R Stroynowski, M Artuso, C Boulahouache, S Blusk, K Bukin, E Dambasuren, G C Moneti, R Mountain, H Muramatsu, R Nandakumar, T Skwarnicki, S Stone, J C Wang, A H Mahmood, S E Csorna, I Danko, G Bonvicini, D Cinabro, M Dubrovin, S McGee, A Bornheim, E Lipeles, S P Pappas, A Shapiro, W M Sun, A J Weinstein, R A Briere, G P Chen, T Ferguson, G Tatishvili, H Vogel, N E Adam, J P Alexander, K Berkelman, V Boisvert, D G Cassel, P S Drell, J E Duboscq, K M Ecklund, R Ehrlich, R S Galik, L Gibbons, B Gittelman, S W Gray, D L Hartill, B K Heltsley, L Hsu, C D Jones, J Kandaswamy, D L Kreinick, A Magerkurth, H Mahlke-Krüger, T O Meyer, N B Mistry, J R Patterson, D Peterson, J Pivarski, S J Richichi, D Riley, A J Sadoff, H Schwarthoff, M R Shepherd, J G Thayer, D Urner, T Wilksen, A Warburton, M Weinberger, S B Athar, P Avery, L Breva-Newell, V Potlia, H Stoeck, J Yelton, K Benslama, B I Eisenstein, G D Gollin, I Karliner, N Lowrey, C Plager, C Sedlack, M Selen, J J Thaler, J Williams, K W Edwards, R Ammar, D Besson, S Anderson, V V Frolov, D T Gong, Y Kubota, S Z Li, R Poling, A Smith, C J Stepaniak, J Urheim, Z Metreveli, K K Seth, A Tomaradze, P Zweber, S Ahmed, M S Alam, J Ernst, L Jian, M Saleem, F Wappler, K Arms, E Eckhart, K K Gan, C Gwon, K Honscheid, D Hufnagel, H Kagan, R Kass, T K Pedlar, E Von Toerne, M M Zoeller, H Severini, P Skubic, S A Dytman, J A Mueller, S Nam, V Savinov, S Chen, J W Hinson, J Lee, D H Miller, V Pavlunin, E I Shibata, I P J Shipsey, D Cronin-Hennessy, A L Lyon, C S Park, W Park, J B Thayer, E H Thorndike; CLEO Collaboration

Affiliation

¹ Southern Methodist University, Dallas, Texas 75275, USA.

PMID: 12688989
DOI: 10.1103/PhysRevLett.90.101801

Abstract

Using 13.8 fb(-1) of data collected at or just below the Upsilon(4S) with the CLEO detector, we report the result of a search for the flavor changing neutral current process D0-->gammagamma. We observe no significant signal for this decay mode and determine 90% confidence level upper limits on the branching fractions B(D0-->gammagamma)/B(D0-->pi(0)pi(0))<0.033 and B(D0-->gammagamma)<2.9 x 10(-5).