Measurement of γγ widths of charmonium states

W. Y. Chen; R. L. McIlwain; D. H. Miller; C. R. Ng; S. F. Schaffner; E. I. Shibata; W. M. Yao; K. Sparks; E. H. Thorndike; C. H. Wang; M. S. Alam; I. J. Kim; W. C. Li; X. C. Lou; C. R. Sun; P. N. Wang; M. I. Zoeller; D. Bortoletto; M. Goldberg; N. Horwitz; V. Jain; M. D. Mestayer; G. C. Moneti; V. Sharma; I. P.J. Shipsey; T. Skwarnicki; M. Thulasidas; S. E. Csorna; T. Letson; J. Alexander; M. Artuso; C. Bebek; K. Berkelman; D. G. Cassel; E. Cheu; D. M. Coffman; G. Crawford; J. W. DeWire; P. S. Dell; R. Ehrlich; R. S. Galik; B. Gittlman; S. W. Gray; A. M. Halling; D. L. Hartill; B. K. Heltsley; J. Kandaswamy; N. Katayama; D. L. Kreinick; J. D. Lewis

doi:10.1016/0370-2693(90)90975-C

Measurement of γγ widths of charmonium states

W. Y. Chen, R. L. McIlwain, D. H. Miller, C. R. Ng, S. F. Schaffner, E. I. Shibata, W. M. Yao, K. Sparks, E. H. Thorndike, C. H. Wang, M. S. Alam, I. J. Kim, W. C. Li, X. C. Lou, C. R. Sun, P. N. Wang, M. I. Zoeller, D. Bortoletto, M. Goldberg, N. HorwitzV. Jain, M. D. Mestayer, G. C. Moneti, V. Sharma, I. P.J. Shipsey, T. Skwarnicki, M. Thulasidas, S. E. Csorna, T. Letson, J. Alexander, M. Artuso, C. Bebek, K. Berkelman, D. G. Cassel, E. Cheu, D. M. Coffman, G. Crawford, J. W. DeWire, P. S. Dell, R. Ehrlich, R. S. Galik, B. Gittlman, S. W. Gray, A. M. Halling, D. L. Hartill, B. K. Heltsley, J. Kandaswamy, N. Katayama, D. L. Kreinick, J. D. Lewis

Physics and Astronomy (Twin Cities)

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Abstract

Using the CLEO detector at the Cornell Electron Storage Ring, we have searched for two-photon production of charmonium in four-track final states. We have measured Γ_γγ(η_c)=5.9^+2.1_-1.8±1.9 keV, and we have obtained 95% CL upper limits of Γ_γγ(X_c0)<6.2 keV and Γ_γγ(X_c2)<1.0 keV.

Original language	English (US)
Pages (from-to)	169-174
Number of pages	6
Journal	Physics Letters B
Volume	243
Issue number	1-2
DOIs	https://doi.org/10.1016/0370-2693(90)90975-C
State	Published - Jun 21 1990

Bibliographical note

Funding Information:
Jensen,t hanksJ ohn R. Smith for helpfuld iscussions regardingM onte Carlo generationo f two-photon processesF.o r their supportR, . Kass thankst heOJI programo f the DOE, P.S. Drell thankst hePYI pro-gramo f the NSF, and R. Poling thankst heA.P. Sloan foundationT. his work was supportedb y the National ScienceF oundationa nd by the US Department of Energy under contract Nos. DE-AC02-76ER01428, DE-AC02-83ER40103, DE-AC02-76ER03064, DE-AC02-76ER01545, DE-AC02-78ER5001,a nd DE-FG05-86ER40272T.h e Super-computingre sourcefso r the Cornell Theory Center were usedi n this research.

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Chen, W. Y., McIlwain, R. L., Miller, D. H., Ng, C. R., Schaffner, S. F., Shibata, E. I., Yao, W. M., Sparks, K., Thorndike, E. H., Wang, C. H., Alam, M. S., Kim, I. J., Li, W. C., Lou, X. C., Sun, C. R., Wang, P. N., Zoeller, M. I., Bortoletto, D., Goldberg, M., ... Lewis, J. D. (1990). Measurement of γγ widths of charmonium states. Physics Letters B, 243(1-2), 169-174. https://doi.org/10.1016/0370-2693(90)90975-C

Chen, WY, McIlwain, RL, Miller, DH, Ng, CR, Schaffner, SF, Shibata, EI, Yao, WM, Sparks, K, Thorndike, EH, Wang, CH, Alam, MS, Kim, IJ, Li, WC, Lou, XC, Sun, CR, Wang, PN, Zoeller, MI, Bortoletto, D, Goldberg, M, Horwitz, N, Jain, V, Mestayer, MD, Moneti, GC, Sharma, V, Shipsey, IPJ, Skwarnicki, T, Thulasidas, M, Csorna, SE, Letson, T, Alexander, J, Artuso, M, Bebek, C, Berkelman, K, Cassel, DG, Cheu, E, Coffman, DM, Crawford, G, DeWire, JW, Dell, PS, Ehrlich, R, Galik, RS, Gittlman, B, Gray, SW, Halling, AM, Hartill, DL, Heltsley, BK, Kandaswamy, J, Katayama, N, Kreinick, DL & Lewis, JD 1990, 'Measurement of γγ widths of charmonium states', Physics Letters B, vol. 243, no. 1-2, pp. 169-174. https://doi.org/10.1016/0370-2693(90)90975-C

@article{6b91b99d4ab04072bda4bea869e5a44a,

title = "Measurement of γγ widths of charmonium states",

abstract = "Using the CLEO detector at the Cornell Electron Storage Ring, we have searched for two-photon production of charmonium in four-track final states. We have measured Γγγ(ηc)=5.9+2.1-1.8±1.9 keV, and we have obtained 95\% CL upper limits of Γγγ(Xc0)<6.2 keV and Γγγ(Xc2)<1.0 keV.",

author = "Chen, \{W. Y.\} and McIlwain, \{R. L.\} and Miller, \{D. H.\} and Ng, \{C. R.\} and Schaffner, \{S. F.\} and Shibata, \{E. I.\} and Yao, \{W. M.\} and K. Sparks and Thorndike, \{E. H.\} and Wang, \{C. H.\} and Alam, \{M. S.\} and Kim, \{I. J.\} and Li, \{W. C.\} and Lou, \{X. C.\} and Sun, \{C. R.\} and Wang, \{P. N.\} and Zoeller, \{M. I.\} and D. Bortoletto and M. Goldberg and N. Horwitz and V. Jain and Mestayer, \{M. D.\} and Moneti, \{G. C.\} and V. Sharma and Shipsey, \{I. P.J.\} and T. Skwarnicki and M. Thulasidas and Csorna, \{S. E.\} and T. Letson and J. Alexander and M. Artuso and C. Bebek and K. Berkelman and Cassel, \{D. G.\} and E. Cheu and Coffman, \{D. M.\} and G. Crawford and DeWire, \{J. W.\} and Dell, \{P. S.\} and R. Ehrlich and Galik, \{R. S.\} and B. Gittlman and Gray, \{S. W.\} and Halling, \{A. M.\} and Hartill, \{D. L.\} and Heltsley, \{B. K.\} and J. Kandaswamy and N. Katayama and Kreinick, \{D. L.\} and Lewis, \{J. D.\}",

note = "Funding Information: Jensen,t hanksJ ohn R. Smith for helpfuld iscussions regardingM onte Carlo generationo f two-photon processesF.o r their supportR, . Kass thankst heOJI programo f the DOE, P.S. Drell thankst hePYI pro-gramo f the NSF, and R. Poling thankst heA.P. Sloan foundationT. his work was supportedb y the National ScienceF oundationa nd by the US Department of Energy under contract Nos. DE-AC02-76ER01428, DE-AC02-83ER40103, DE-AC02-76ER03064, DE-AC02-76ER01545, DE-AC02-78ER5001,a nd DE-FG05-86ER40272T.h e Super-computingre sourcefso r the Cornell Theory Center were usedi n this research.",

year = "1990",

month = jun,

day = "21",

doi = "10.1016/0370-2693(90)90975-C",

language = "English (US)",

volume = "243",

pages = "169--174",

journal = "Physics Letters B",

issn = "0370-2693",

publisher = "Elsevier B.V.",

number = "1-2",

}

TY - JOUR

T1 - Measurement of γγ widths of charmonium states

AU - Chen, W. Y.

AU - McIlwain, R. L.

AU - Miller, D. H.

AU - Ng, C. R.

AU - Schaffner, S. F.

AU - Shibata, E. I.

AU - Yao, W. M.

AU - Sparks, K.

AU - Thorndike, E. H.

AU - Wang, C. H.

AU - Alam, M. S.

AU - Kim, I. J.

AU - Li, W. C.

AU - Lou, X. C.

AU - Sun, C. R.

AU - Wang, P. N.

AU - Zoeller, M. I.

AU - Bortoletto, D.

AU - Goldberg, M.

AU - Horwitz, N.

AU - Jain, V.

AU - Mestayer, M. D.

AU - Moneti, G. C.

AU - Sharma, V.

AU - Shipsey, I. P.J.

AU - Skwarnicki, T.

AU - Thulasidas, M.

AU - Csorna, S. E.

AU - Letson, T.

AU - Alexander, J.

AU - Artuso, M.

AU - Bebek, C.

AU - Berkelman, K.

AU - Cassel, D. G.

AU - Cheu, E.

AU - Coffman, D. M.

AU - Crawford, G.

AU - DeWire, J. W.

AU - Dell, P. S.

AU - Ehrlich, R.

AU - Galik, R. S.

AU - Gittlman, B.

AU - Gray, S. W.

AU - Halling, A. M.

AU - Hartill, D. L.

AU - Heltsley, B. K.

AU - Kandaswamy, J.

AU - Katayama, N.

AU - Kreinick, D. L.

AU - Lewis, J. D.

N1 - Funding Information: Jensen,t hanksJ ohn R. Smith for helpfuld iscussions regardingM onte Carlo generationo f two-photon processesF.o r their supportR, . Kass thankst heOJI programo f the DOE, P.S. Drell thankst hePYI pro-gramo f the NSF, and R. Poling thankst heA.P. Sloan foundationT. his work was supportedb y the National ScienceF oundationa nd by the US Department of Energy under contract Nos. DE-AC02-76ER01428, DE-AC02-83ER40103, DE-AC02-76ER03064, DE-AC02-76ER01545, DE-AC02-78ER5001,a nd DE-FG05-86ER40272T.h e Super-computingre sourcefso r the Cornell Theory Center were usedi n this research.

PY - 1990/6/21

Y1 - 1990/6/21

N2 - Using the CLEO detector at the Cornell Electron Storage Ring, we have searched for two-photon production of charmonium in four-track final states. We have measured Γγγ(ηc)=5.9+2.1-1.8±1.9 keV, and we have obtained 95% CL upper limits of Γγγ(Xc0)<6.2 keV and Γγγ(Xc2)<1.0 keV.

AB - Using the CLEO detector at the Cornell Electron Storage Ring, we have searched for two-photon production of charmonium in four-track final states. We have measured Γγγ(ηc)=5.9+2.1-1.8±1.9 keV, and we have obtained 95% CL upper limits of Γγγ(Xc0)<6.2 keV and Γγγ(Xc2)<1.0 keV.

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UR - http://www.scopus.com/inward/citedby.url?scp=0001737794&partnerID=8YFLogxK

U2 - 10.1016/0370-2693(90)90975-C

DO - 10.1016/0370-2693(90)90975-C

M3 - Article

AN - SCOPUS:0001737794

SN - 0370-2693

VL - 243

SP - 169

EP - 174

JO - Physics Letters B

JF - Physics Letters B

IS - 1-2

ER -

Measurement of γγ widths of charmonium states

Abstract

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