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Eisenstein BI, Ernst J, Gladding GE, et al. Experimental investigation of the two-photon widths of the chi(c0) and the chi(c2) mesons. Phys Rev Lett. 2001;87(6):061801doi: 10.1103/PhysRevLett.87.061801.
Eisenstein, B. I., Ernst, J., Gladding, G. E., Gollin, G. D., Hans, R. M., Johnson, E., Karliner, I., Marsh, M. A., Plager, C., Sedlack, C., Selen, M., Thaler, J. J., Williams, J., Edwards, K. W., Sadoff, A. J., Ammar, R., Bean, A., Besson, D., Zhao, X., Anderson, S., Frolov, V. V., Kubota, Y., Lee, S. J., Poling, R., Smith, A., Stepaniak, C. J., Urheim, J., Ahmed, S., Alam, M. S., Athar, S. B., Jian, L., Ling, L., Saleem, M., Timm, S., Wappler, F., Anastassov, A., Eckhart, E., Gan, K. K., Gwon, C., Hart, T., Honscheid, K., Hufnagel, D., Kagan, H., Kass, R., Pedlar, T. K., Thayer, J. B., von Toerne, E., Zoeller, M. M., Richichi, S. J., Severini, H., Skubic, P., Undrus, A., Savinov, V., Chen, S., Hinson, J. W., Lee, J., Miller, D. H., Shibata, E. I., Shipsey, I. P., Pavlunin, V., Cronin-Hennessy, D., Lyon, A. L., Thorndike, E. H., Coan, T. E., Fadeyev, V., Gao, Y. S., Maravin, Y., Narsky, I., Stroynowski, R., Ye, J., Wlodek, T., Artuso, M., Benslama, K., Boulahouache, C., Bukin, K., Dambasuren, E., Majumder, G., Mountain, R., Skwarnicki, T., Stone, S., Wang, J. C., Wolf, A., Kopp, S., Kostin, M., Mahmood, A. H., Csorna, S. E., Danko, I., McLean, K. W., Xu, Z., Godang, R., Bonvicini, G., Cinabro, D., Dubrovin, M., McGee, S., Bornheim, A., Lipeles, E., Pappas, S. P., Shapiro, A., Sun, W. M., Weinstein, A. J., Jaffe, D. E., Mahapatra, R., Masek, G., Paar, H. P., Asner, D. M., Eppich, A., Hill, T. S., Morrison, R. J., Briere, R. A., Chen, G. P., Ferguson, T., Vogel, H., Alexander, J. P., Bebek, C., Berger, B. E., Berkelman, K., Blanc, F., Boisvert, V., Cassel, D. G., Drell, P. S., Duboscq, J. E., Ecklund, K. M., Ehrlich, R., Gaidarev, P., Galik, R. S., Gibbons, L., Gittelman, B., Gray, S. W., Hartill, D. L., Heltsley, B. K., Hsu, L., Jones, C. D., Kandaswamy, J., Kreinick, D. L., Lohner, M., Magerkurth, A., Mahlke-Krüger, H., Meyer, T. O., Mistry, N. B., Nordberg, E., Palmer, M., Patterson, J. R., Peterson, D., Riley, D., Romano, A., Schwarthoff, H., Thayer, J. G., Urner, D., Valant-Spaight, B., Viehhauser, G., Warburton, A., Avery, P., Prescott, C., Rubiera, A. I., Stoeck, H., Yelton, J., Brandenburg, G., Ershov, A., Kim, D. Y., & Wilson, R. (2001). Experimental investigation of the two-photon widths of the chi(c0) and the chi(c2) mesons. Physical review letters, 87(6), 061801. https://doi.org/10.1103/PhysRevLett.87.061801
Eisenstein, B I, et al. "Experimental investigation of the two-photon widths of the chi(c0) and the chi(c2) mesons." Physical review letters vol. 87,6 (2001): 061801. doi: https://doi.org/10.1103/PhysRevLett.87.061801
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, Sadoff AJ, Ammar R, Bean A, Besson D, Zhao X, Anderson S, Frolov VV, Kubota Y, Lee SJ, Poling R, 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, Thayer JB, von Toerne E, Zoeller MM, Richichi SJ, Severini H, Skubic P, Undrus A, Savinov V, Chen S, Hinson JW, Lee J, Miller DH, Shibata EI, Shipsey IP, 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, Benslama K, Boulahouache C, Bukin K, Dambasuren E, Majumder G, Mountain R, Skwarnicki T, Stone S, Wang JC, Wolf A, Kopp S, Kostin M, Mahmood AH, Csorna SE, Danko I, McLean KW, Xu Z, Godang R, Bonvicini G, Cinabro D, Dubrovin M, McGee S, Bornheim A, Lipeles E, Pappas SP, Shapiro A, Sun WM, Weinstein AJ, Jaffe DE, Mahapatra R, Masek G, Paar HP, Asner DM, Eppich A, Hill TS, Morrison RJ, Briere RA, Chen GP, Ferguson T, Vogel H, Alexander JP, Bebek C, Berger BE, Berkelman K, Blanc F, Boisvert V, Cassel DG, Drell PS, Duboscq JE, Ecklund KM, Ehrlich R, Gaidarev P, Galik RS, Gibbons L, Gittelman B, Gray SW, Hartill DL, Heltsley BK, Hsu L, Jones CD, Kandaswamy J, Kreinick DL, Lohner M, Magerkurth A, Mahlke-Krüger H, Meyer TO, Mistry NB, Nordberg E, Palmer M, Patterson JR, Peterson D, Riley D, Romano A, Schwarthoff H, 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 DY, Wilson R. Experimental investigation of the two-photon widths of the chi(c0) and the chi(c2) mesons. Phys Rev Lett. 2001 Aug 06;87(6):061801. doi: 10.1103/PhysRevLett.87.061801. Epub 2001 Jul 24. PMID: 11497821.
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Phys Rev Lett. 2001 Aug 06;87(6):061801. doi: 10.1103/PhysRevLett.87.061801. Epub 2001 Jul 24.

Experimental investigation of the two-photon widths of the chi(c0) and the chi(c2) mesons.

Physical review letters

B I Eisenstein, J Ernst, G E Gladding, G D Gollin, R M Hans, E Johnson, I Karliner, M A Marsh, C Plager, C Sedlack, M Selen, J J Thaler, J Williams, K W Edwards, A J Sadoff, R Ammar, A Bean, D Besson, X Zhao, S Anderson, V V Frolov, Y Kubota, S J Lee, R Poling, A Smith, C J Stepaniak, J Urheim, S Ahmed, M S Alam, S B Athar, L Jian, L Ling, M Saleem, S Timm, F Wappler, A Anastassov, E Eckhart, K K Gan, C Gwon, T Hart, K Honscheid, D Hufnagel, H Kagan, R Kass, T K Pedlar, J B Thayer, E von Toerne, M M Zoeller, S J Richichi, H Severini, P Skubic, A Undrus, V Savinov, S Chen, J W Hinson, J Lee, D H Miller, E I Shibata, I P Shipsey, V Pavlunin, D Cronin-Hennessy, A L Lyon, E H Thorndike, T E Coan, V Fadeyev, Y S Gao, Y Maravin, I Narsky, R Stroynowski, J Ye, T Wlodek, M Artuso, K Benslama, C Boulahouache, K Bukin, E Dambasuren, G Majumder, R Mountain, T Skwarnicki, S Stone, J C Wang, A Wolf, S Kopp, M Kostin, A H Mahmood, S E Csorna, I Danko, K W McLean, Z Xu, R Godang, G Bonvicini, D Cinabro, M Dubrovin, S McGee, A Bornheim, E Lipeles, S P Pappas, A Shapiro, W M Sun, A J Weinstein, D E Jaffe, R Mahapatra, G Masek, H P Paar, D M Asner, A Eppich, T S Hill, R J Morrison, R A Briere, G P Chen, T Ferguson, H Vogel, J P Alexander, C Bebek, B E Berger, K Berkelman, F Blanc, V Boisvert, D G Cassel, P S Drell, J E Duboscq, K M Ecklund, R Ehrlich, P Gaidarev, 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, M Lohner, A Magerkurth, H Mahlke-Krüger, T O Meyer, N B Mistry, E Nordberg, M Palmer, J R Patterson, D Peterson, D Riley, A Romano, H Schwarthoff, J G Thayer, D Urner, B Valant-Spaight, G Viehhauser, A Warburton, P Avery, C Prescott, A I Rubiera, H Stoeck, J Yelton, G Brandenburg, A Ershov, D Y Kim, R Wilson

Affiliations

  1. University of Illinois, Urbana-Champaign, Illinois 61801.

PMID: 11497821 DOI: 10.1103/PhysRevLett.87.061801

Abstract

Using 12.7 fb(-1) of data collected with the CLEO detector at CESR, we observed two-photon production of the cc states chi(c0) and chi(c2) in their decay to pi(+)pi(-)pi(+)pi(-). We measured gamma(gammagamma)(chi(c))xB(chi(c)-->pi(+)pi(-)pi(+)pi(-)) to be 75+/-13(stat)+/-8(syst) eV for the chi(c0) and 6.4+/-1.8(stat)+/-0.8(syst) eV for the chi(c2), implying gamma(gammagamma)(chi(c0)) = 3.76+/-0.65(stat)+/-0.41(syst)+/-1.69(br) keV and gamma(gammagamma)(chi(c2)) = 0.53+/-0.15(stat)+/-0.06(syst)+/-0.22(br) keV. Also, cancellation of dominant experimental and theoretical uncertainties permits a precise comparison of gamma(gammagamma)(chi(c0))/gamma(gammagamma)(chi(c2)), evaluated to be 7.4+/-2.4(stat)+/-0.5(syst)+/-0.9(br), with QCD-based predictions.

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