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Tippens WB, Prakhov S, Allgower CE, et al. Determination of the quadratic slope parameter in eta-->3pi(0) decay. Phys Rev Lett. 2001;87(19):192001doi: 10.1103/PhysRevLett.87.192001.
Tippens, W. B., Prakhov, S., Allgower, C. E., Bekrenev, V., Berger, E., Briscoe, W. J., Clajus, M., Comfort, J. R., Craig, K., Efendiev, A., Grosnick, D., Holstein, B. R., Huber, G. M., Isenhower, D., Knecht, N., Koetke, D., Koulbardis, A., Kozlenko, N., Kruglov, S., Lolos, G. J., Lopatin, I., Manley, D. M., Marusić, A., Manweiler, R., McDonald, S., Nefkens, B. M., Olmsted, J., Papandreou, Z., Phaisangittisakul, N., Price, J. W., Pulver, M., Ramirez, A. F., Sadler, M. E., Shafi, A., Spinka, H., Stanislaus, S., Starostin, A., & Staudenmaier, H. M. (2001). Determination of the quadratic slope parameter in eta-->3pi(0) decay. Physical review letters, 87(19), 192001. https://doi.org/10.1103/PhysRevLett.87.192001
Tippens, W B, et al. "Determination of the quadratic slope parameter in eta-->3pi(0) decay." Physical review letters vol. 87,19 (2001): 192001. doi: https://doi.org/10.1103/PhysRevLett.87.192001
Tippens WB, Prakhov S, Allgower CE, Bekrenev V, Berger E, Briscoe WJ, Clajus M, Comfort JR, Craig K, Efendiev A, Grosnick D, Holstein BR, Huber GM, Isenhower D, Knecht N, Koetke D, Koulbardis A, Kozlenko N, Kruglov S, Lolos GJ, Lopatin I, Manley DM, Marusić A, Manweiler R, McDonald S, Nefkens BM, Olmsted J, Papandreou Z, Phaisangittisakul N, Price JW, Pulver M, Ramirez AF, Sadler ME, Shafi A, Spinka H, Stanislaus S, Starostin A, Staudenmaier HM. Determination of the quadratic slope parameter in eta-->3pi(0) decay. Phys Rev Lett. 2001 Nov 05;87(19):192001. doi: 10.1103/PhysRevLett.87.192001. Epub 2001 Oct 22. PMID: 11690403.
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Phys Rev Lett. 2001 Nov 05;87(19):192001. doi: 10.1103/PhysRevLett.87.192001. Epub 2001 Oct 22.

Determination of the quadratic slope parameter in eta-->3pi(0) decay.

Physical review letters

W B Tippens, S Prakhov, C E Allgower, V Bekrenev, E Berger, W J Briscoe, M Clajus, J R Comfort, K Craig, A Efendiev, D Grosnick, B R Holstein, G M Huber, D Isenhower, N Knecht, D Koetke, A Koulbardis, N Kozlenko, S Kruglov, G J Lolos, I Lopatin, D M Manley, A Marusić, R Manweiler, S McDonald, B M Nefkens, J Olmsted, Z Papandreou, N Phaisangittisakul, J W Price, M Pulver, A F Ramirez, M E Sadler, A Shafi, H Spinka, S Stanislaus, A Starostin, H M Staudenmaier

Affiliations

  1. University of California, Los Angeles, Los Angeles, California 90095-1547.

PMID: 11690403 DOI: 10.1103/PhysRevLett.87.192001

Abstract

We have determined the quadratic slope parameter alpha for eta-->3pi(0) to be alpha = -0.031(4) from a 99% pure sample of 10(6)eta-->3pi(0) decays produced in the reaction pi(-)p-->n(eta) close to the eta threshold using the Crystal Ball detector at the AGS. The result is four times more precise than the present world data and disagrees with current chiral perturbation theory calculations by about four standard deviations.

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