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Title: Amplitude analyses of the decays χc1→ηπ⁺π⁻ and χc1→η'π⁺π⁻

Abstract

Using a data sample of 2.59×10⁷ ψ(2S) decays obtained with the CLEO-c detector, we perform amplitude analyses of the complementary decay chains ψ(2S)→γχc1; χc1→ηπ⁺π⁻ and ψ(2S)→γχc1; χc1→η'π⁺π⁻. We find evidence for an exotic P-wave η'π amplitude, which, if interpreted as a resonance, would have parameters consistent with the π₁(1600) state reported in other production mechanisms. We also make the first observation of the decay a₀(980)→η'π and measure the ratio of branching fractions B(a₀(980)→η'π)/B(a₀(980)→ηπ)=0.064±0.014±0.014. The ππ spectrum produced with a recoiling η is compared to that with η' recoil.

Authors:
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Publication Date:
Sponsoring Org.:
USDOE
OSTI Identifier:
1098510
Resource Type:
Journal Article: Publisher's Accepted Manuscript
Journal Name:
Physical Review. D, Particles, Fields, Gravitation and Cosmology
Additional Journal Information:
Journal Name: Physical Review. D, Particles, Fields, Gravitation and Cosmology Journal Volume: 84 Journal Issue: 11; Journal ID: ISSN 1550-7998
Publisher:
American Physical Society
Country of Publication:
United States
Language:
English

Citation Formats

Adams, G. S., Napolitano, J., Ecklund, K. M., Insler, J., Muramatsu, H., Park, C. S., Pearson, L. J., Thorndike, E. H., Ricciardi, S., Thomas, C., Artuso, M., Blusk, S., Mountain, R., Skwarnicki, T., Stone, S., Zhang, L. M., Bonvicini, G., Cinabro, D., Lincoln, A., Smith, M. J., Zhou, P., Zhu, J., Naik, P., Rademacker, J., Asner, D. M., Edwards, K. W., Randrianarivony, K., Tatishvili, G., Briere, R. A., Vogel, H., Onyisi, P. U. E., Rosner, J. L., Alexander, J. P., Cassel, D. G., Das, S., Ehrlich, R., Gibbons, L., Gray, S. W., Hartill, D. L., Heltsley, B. K., Kreinick, D. L., Kuznetsov, V. E., Patterson, J. R., Peterson, D., Riley, D., Ryd, A., Sadoff, A. J., Shi, X., Sun, W. M., Yelton, J., Rubin, P., Lowrey, N., Mehrabyan, S., Selen, M., Wiss, J., Libby, J., Kornicer, M., Mitchell, R. E., Shepherd, M. R., Szczepaniak, A., Besson, D., Pedlar, T. K., Cronin-Hennessy, D., Hietala, J., Dobbs, S., Metreveli, Z., Seth, K. K., Tomaradze, A., Xiao, T., Martin, L., Powell, A., Wilkinson, G., Ge, J. Y., Miller, D. H., Shipsey, I. P. J., and Xin, B. Amplitude analyses of the decays χc1→ηπ⁺π⁻ and χc1→η'π⁺π⁻. United States: N. p., 2011. Web. doi:10.1103/PhysRevD.84.112009.
Adams, G. S., Napolitano, J., Ecklund, K. M., Insler, J., Muramatsu, H., Park, C. S., Pearson, L. J., Thorndike, E. H., Ricciardi, S., Thomas, C., Artuso, M., Blusk, S., Mountain, R., Skwarnicki, T., Stone, S., Zhang, L. M., Bonvicini, G., Cinabro, D., Lincoln, A., Smith, M. J., Zhou, P., Zhu, J., Naik, P., Rademacker, J., Asner, D. M., Edwards, K. W., Randrianarivony, K., Tatishvili, G., Briere, R. A., Vogel, H., Onyisi, P. U. E., Rosner, J. L., Alexander, J. P., Cassel, D. G., Das, S., Ehrlich, R., Gibbons, L., Gray, S. W., Hartill, D. L., Heltsley, B. K., Kreinick, D. L., Kuznetsov, V. E., Patterson, J. R., Peterson, D., Riley, D., Ryd, A., Sadoff, A. J., Shi, X., Sun, W. M., Yelton, J., Rubin, P., Lowrey, N., Mehrabyan, S., Selen, M., Wiss, J., Libby, J., Kornicer, M., Mitchell, R. E., Shepherd, M. R., Szczepaniak, A., Besson, D., Pedlar, T. K., Cronin-Hennessy, D., Hietala, J., Dobbs, S., Metreveli, Z., Seth, K. K., Tomaradze, A., Xiao, T., Martin, L., Powell, A., Wilkinson, G., Ge, J. Y., Miller, D. H., Shipsey, I. P. J., & Xin, B. Amplitude analyses of the decays χc1→ηπ⁺π⁻ and χc1→η'π⁺π⁻. United States. https://doi.org/10.1103/PhysRevD.84.112009
Adams, G. S., Napolitano, J., Ecklund, K. M., Insler, J., Muramatsu, H., Park, C. S., Pearson, L. J., Thorndike, E. H., Ricciardi, S., Thomas, C., Artuso, M., Blusk, S., Mountain, R., Skwarnicki, T., Stone, S., Zhang, L. M., Bonvicini, G., Cinabro, D., Lincoln, A., Smith, M. J., Zhou, P., Zhu, J., Naik, P., Rademacker, J., Asner, D. M., Edwards, K. W., Randrianarivony, K., Tatishvili, G., Briere, R. A., Vogel, H., Onyisi, P. U. E., Rosner, J. L., Alexander, J. P., Cassel, D. G., Das, S., Ehrlich, R., Gibbons, L., Gray, S. W., Hartill, D. L., Heltsley, B. K., Kreinick, D. L., Kuznetsov, V. E., Patterson, J. R., Peterson, D., Riley, D., Ryd, A., Sadoff, A. J., Shi, X., Sun, W. M., Yelton, J., Rubin, P., Lowrey, N., Mehrabyan, S., Selen, M., Wiss, J., Libby, J., Kornicer, M., Mitchell, R. E., Shepherd, M. R., Szczepaniak, A., Besson, D., Pedlar, T. K., Cronin-Hennessy, D., Hietala, J., Dobbs, S., Metreveli, Z., Seth, K. K., Tomaradze, A., Xiao, T., Martin, L., Powell, A., Wilkinson, G., Ge, J. Y., Miller, D. H., Shipsey, I. P. J., and Xin, B. 2011. "Amplitude analyses of the decays χc1→ηπ⁺π⁻ and χc1→η'π⁺π⁻". United States. https://doi.org/10.1103/PhysRevD.84.112009.
@article{osti_1098510,
title = {Amplitude analyses of the decays χc1→ηπ⁺π⁻ and χc1→η'π⁺π⁻},
author = {Adams, G. S. and Napolitano, J. and Ecklund, K. M. and Insler, J. and Muramatsu, H. and Park, C. S. and Pearson, L. J. and Thorndike, E. H. and Ricciardi, S. and Thomas, C. and Artuso, M. and Blusk, S. and Mountain, R. and Skwarnicki, T. and Stone, S. and Zhang, L. M. and Bonvicini, G. and Cinabro, D. and Lincoln, A. and Smith, M. J. and Zhou, P. and Zhu, J. and Naik, P. and Rademacker, J. and Asner, D. M. and Edwards, K. W. and Randrianarivony, K. and Tatishvili, G. and Briere, R. A. and Vogel, H. and Onyisi, P. U. E. and Rosner, J. L. and Alexander, J. P. and Cassel, D. G. and Das, S. and Ehrlich, R. and Gibbons, L. and Gray, S. W. and Hartill, D. L. and Heltsley, B. K. and Kreinick, D. L. and Kuznetsov, V. E. and Patterson, J. R. and Peterson, D. and Riley, D. and Ryd, A. and Sadoff, A. J. and Shi, X. and Sun, W. M. and Yelton, J. and Rubin, P. and Lowrey, N. and Mehrabyan, S. and Selen, M. and Wiss, J. and Libby, J. and Kornicer, M. and Mitchell, R. E. and Shepherd, M. R. and Szczepaniak, A. and Besson, D. and Pedlar, T. K. and Cronin-Hennessy, D. and Hietala, J. and Dobbs, S. and Metreveli, Z. and Seth, K. K. and Tomaradze, A. and Xiao, T. and Martin, L. and Powell, A. and Wilkinson, G. and Ge, J. Y. and Miller, D. H. and Shipsey, I. P. J. and Xin, B.},
abstractNote = {Using a data sample of 2.59×10⁷ ψ(2S) decays obtained with the CLEO-c detector, we perform amplitude analyses of the complementary decay chains ψ(2S)→γχc1; χc1→ηπ⁺π⁻ and ψ(2S)→γχc1; χc1→η'π⁺π⁻. We find evidence for an exotic P-wave η'π amplitude, which, if interpreted as a resonance, would have parameters consistent with the π₁(1600) state reported in other production mechanisms. We also make the first observation of the decay a₀(980)→η'π and measure the ratio of branching fractions B(a₀(980)→η'π)/B(a₀(980)→ηπ)=0.064±0.014±0.014. The ππ spectrum produced with a recoiling η is compared to that with η' recoil.},
doi = {10.1103/PhysRevD.84.112009},
url = {https://www.osti.gov/biblio/1098510}, journal = {Physical Review. D, Particles, Fields, Gravitation and Cosmology},
issn = {1550-7998},
number = 11,
volume = 84,
place = {United States},
year = {Thu Dec 29 00:00:00 EST 2011},
month = {Thu Dec 29 00:00:00 EST 2011}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record at https://doi.org/10.1103/PhysRevD.84.112009

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Cited by: 29 works
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