High-statistics measurement of neutral-pion pair production in two-photon collisions

S. Uehara; Y. Watanabe; I. Adachi; H. Aihara; K. Arinstein; A. M. Bakich; V. Balagura; E. Barberio; A. Bay; I. Bedny; K. Belous; V. Bhardwaj; U. Bitenc; A. Bondar; M. Bračko; T. E. Browder; M. C. Chang; A. Chen; K. F. Chen; W. T. Chen; B. G. Cheon; I. S. Cho; Y. Choi; J. Dalseno; M. Dash; A. Drutskoy; S. Eidelman; D. Epifanov; B. Golob; H. Ha; J. Haba; K. Hayasaka; H. Hayashii; Y. Hoshi; W. S. Hou; H. J. Hyun; T. Iijima; K. Inami; A. Ishikawa; R. Itoh; M. Iwasaki; Y. Iwasaki; D. H. Kah; H. Kaji; J. H. Kang; N. Katayama; H. Kawai; T. Kawasaki; H. Kichimi; H. J. Kim; Y. I. Kim; Y. J. Kim; S. Korpar; P. Križan; P. Krokovny; R. Kumar; A. Kuzmin; Y. J. Kwon; S. H. Kyeong; J. S. Lange; J. S. Lee; S. E. Lee; A. Limosani; S. W. Lin; C. Liu; Y. Liu; D. Liventsev; F. Mandl; S. McOnie; K. Miyabayashi; Y. Miyazaki; T. Mori; Y. Nagasaka; I. Nakamura; E. Nakano; M. Nakao; H. Nakazawa; Z. Natkaniec; S. Nishida; O. Nitoh; S. Ogawa; T. Ohshima; S. Okuno; S. L. Olsen; H. Ozaki; P. Pakhlov; G. Pakhlova; H. Palka; C. W. Park; H. Park; H. K. Park; K. S. Park; L. S. Peak; L. E. Piilonen; H. Sahoo; Y. Sakai; O. Schneider; K. Senyo; M. E. Sevior; M. Shapkin; C. P. Shen; J. G. Shiu; B. Shwartz; J. B. Singh; A. Sokolov; S. Stanič; M. Starič; T. Sumiyoshi; S. Y. Suzuki; G. N. Taylor; Y. Teramoto; I. Tikhomirov; T. Uglov; Y. Unno; S. Uno; P. Urquijo; Y. Usov; G. Varner; C. H. Wang; P. Wang; X. L. Wang; R. Wedd; E. Won; Y. Yamashita; Y. Yusa; Z. P. Zhang; V. Zhilich; V. Zhulanov; T. Zivko; A. Zupanc; O. Zyukova

doi:10.1103/PhysRevD.78.052004

High-statistics measurement of neutral-pion pair production in two-photon collisions

S. Uehara, Y. Watanabe, I. Adachi, H. Aihara, K. Arinstein, A. M. Bakich, V. Balagura, E. Barberio, A. Bay, I. Bedny, K. Belous, V. Bhardwaj, U. Bitenc, A. Bondar, M. Bračko, T. E. Browder, M. C. Chang, A. Chen, K. F. Chen, W. T. ChenB. G. Cheon, I. S. Cho, Y. Choi, J. Dalseno, M. Dash, A. Drutskoy, S. Eidelman, D. Epifanov, B. Golob, H. Ha, J. Haba, K. Hayasaka, H. Hayashii, Y. Hoshi, W. S. Hou, H. J. Hyun, T. Iijima, K. Inami, A. Ishikawa, R. Itoh, M. Iwasaki, Y. Iwasaki, D. H. Kah, H. Kaji, J. H. Kang, N. Katayama, H. Kawai, T. Kawasaki, H. Kichimi, H. J. Kim, Y. I. Kim, Y. J. Kim, S. Korpar, P. Križan, P. Krokovny, R. Kumar, A. Kuzmin, Y. J. Kwon, S. H. Kyeong, J. S. Lange, J. S. Lee, S. E. Lee, A. Limosani, S. W. Lin, C. Liu, Y. Liu, D. Liventsev, F. Mandl, S. McOnie, K. Miyabayashi, Y. Miyazaki, T. Mori, Y. Nagasaka, I. Nakamura, E. Nakano, M. Nakao, H. Nakazawa, Z. Natkaniec, S. Nishida, O. Nitoh, S. Ogawa, T. Ohshima, S. Okuno, S. L. Olsen, H. Ozaki, P. Pakhlov, G. Pakhlova, H. Palka, C. W. Park, H. Park, H. K. Park, K. S. Park, L. S. Peak, L. E. Piilonen, H. Sahoo, Y. Sakai, O. Schneider, K. Senyo, M. E. Sevior, M. Shapkin, C. P. Shen, J. G. Shiu, B. Shwartz, J. B. Singh, A. Sokolov, S. Stanič, M. Starič, T. Sumiyoshi, S. Y. Suzuki, G. N. Taylor, Y. Teramoto, I. Tikhomirov, T. Uglov, Y. Unno, S. Uno, P. Urquijo, Y. Usov, G. Varner, C. H. Wang, P. Wang, X. L. Wang, R. Wedd, E. Won, Y. Yamashita, Y. Yusa, Z. P. Zhang, V. Zhilich, V. Zhulanov, T. Zivko, A. Zupanc, O. Zyukova

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Abstract

We present a high-statistics measurement of differential cross sections and the total cross section for the process γγ→π0π0 in the kinematic range 0.6GeV≤W≤4.0GeV and |cosθ*|≤0.8, where W and θ* are the energy and pion scattering angle, respectively, in the γγ center-of-mass system. Differential cross sections are fitted to obtain information on S, D0, D2, G0, and G2 waves. The G waves are important above W1.6GeV. The general behavior of partial waves is studied by fitting differential cross sections in a simple parametrization where amplitudes contain resonant contributions and smooth background. The D2 wave is dominated by the f2(1270) meson whose parameters are consistent with the current world averages. The D0 wave contains a f2(1270) component, whose fraction is fitted. For the S wave, the f0(980) parameters are found to be consistent with the values determined from our recent π+π- data. In addition to the f0(980), the S wave prefers to have another resonance-like contribution whose parameters are obtained.

Original language	English
Article number	052004
Journal	Physical Review D - Particles, Fields, Gravitation and Cosmology
Volume	78
Issue number	5
DOIs	https://doi.org/10.1103/PhysRevD.78.052004
State	Published - 12 Sep 2008

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10.1103/PhysRevD.78.052004

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Uehara, S., Watanabe, Y., Adachi, I., Aihara, H., Arinstein, K., Bakich, A. M., Balagura, V., Barberio, E., Bay, A., Bedny, I., Belous, K., Bhardwaj, V., Bitenc, U., Bondar, A., Bračko, M., Browder, T. E., Chang, M. C., Chen, A., Chen, K. F., ... Zyukova, O. (2008). High-statistics measurement of neutral-pion pair production in two-photon collisions. Physical Review D - Particles, Fields, Gravitation and Cosmology, 78(5), Article 052004. https://doi.org/10.1103/PhysRevD.78.052004

@article{ff6fa9a58b6d43cf86ef9ff91d08b198,

title = "High-statistics measurement of neutral-pion pair production in two-photon collisions",

abstract = "We present a high-statistics measurement of differential cross sections and the total cross section for the process γγ→π0π0 in the kinematic range 0.6GeV≤W≤4.0GeV and |cosθ*|≤0.8, where W and θ* are the energy and pion scattering angle, respectively, in the γγ center-of-mass system. Differential cross sections are fitted to obtain information on S, D0, D2, G0, and G2 waves. The G waves are important above W1.6GeV. The general behavior of partial waves is studied by fitting differential cross sections in a simple parametrization where amplitudes contain resonant contributions and smooth background. The D2 wave is dominated by the f2(1270) meson whose parameters are consistent with the current world averages. The D0 wave contains a f2(1270) component, whose fraction is fitted. For the S wave, the f0(980) parameters are found to be consistent with the values determined from our recent π+π- data. In addition to the f0(980), the S wave prefers to have another resonance-like contribution whose parameters are obtained.",

author = "S. Uehara and Y. Watanabe and I. Adachi and H. Aihara and K. Arinstein and Bakich, {A. M.} and V. Balagura and E. Barberio and A. Bay and I. Bedny and K. Belous and V. Bhardwaj and U. Bitenc and A. Bondar and M. Bra{\v c}ko and Browder, {T. E.} and Chang, {M. C.} and A. Chen and Chen, {K. F.} and Chen, {W. T.} and Cheon, {B. G.} and Cho, {I. S.} and Y. Choi and J. Dalseno and M. Dash and A. Drutskoy and S. Eidelman and D. Epifanov and B. Golob and H. Ha and J. Haba and K. Hayasaka and H. Hayashii and Y. Hoshi and Hou, {W. S.} and Hyun, {H. J.} and T. Iijima and K. Inami and A. Ishikawa and R. Itoh and M. Iwasaki and Y. Iwasaki and Kah, {D. H.} and H. Kaji and Kang, {J. H.} and N. Katayama and H. Kawai and T. Kawasaki and H. Kichimi and Kim, {H. J.} and Kim, {Y. I.} and Kim, {Y. J.} and S. Korpar and P. Kri{\v z}an and P. Krokovny and R. Kumar and A. Kuzmin and Kwon, {Y. J.} and Kyeong, {S. H.} and Lange, {J. S.} and Lee, {J. S.} and Lee, {S. E.} and A. Limosani and Lin, {S. W.} and C. Liu and Y. Liu and D. Liventsev and F. Mandl and S. McOnie and K. Miyabayashi and Y. Miyazaki and T. Mori and Y. Nagasaka and I. Nakamura and E. Nakano and M. Nakao and H. Nakazawa and Z. Natkaniec and S. Nishida and O. Nitoh and S. Ogawa and T. Ohshima and S. Okuno and Olsen, {S. L.} and H. Ozaki and P. Pakhlov and G. Pakhlova and H. Palka and Park, {C. W.} and H. Park and Park, {H. K.} and Park, {K. S.} and Peak, {L. S.} and Piilonen, {L. E.} and H. Sahoo and Y. Sakai and O. Schneider and K. Senyo and Sevior, {M. E.} and M. Shapkin and Shen, {C. P.} and Shiu, {J. G.} and B. Shwartz and Singh, {J. B.} and A. Sokolov and S. Stani{\v c} and M. Stari{\v c} and T. Sumiyoshi and Suzuki, {S. Y.} and Taylor, {G. N.} and Y. Teramoto and I. Tikhomirov and T. Uglov and Y. Unno and S. Uno and P. Urquijo and Y. Usov and G. Varner and Wang, {C. H.} and P. Wang and Wang, {X. L.} and R. Wedd and E. Won and Y. Yamashita and Y. Yusa and Zhang, {Z. P.} and V. Zhilich and V. Zhulanov and T. Zivko and A. Zupanc and O. Zyukova",

year = "2008",

month = sep,

day = "12",

doi = "10.1103/PhysRevD.78.052004",

language = "English",

volume = "78",

journal = "Physical Review D - Particles, Fields, Gravitation and Cosmology",

issn = "1550-7998",

publisher = "American Physical Society",

number = "5",

}

Uehara, S, Watanabe, Y, Adachi, I, Aihara, H, Arinstein, K, Bakich, AM, Balagura, V, Barberio, E, Bay, A, Bedny, I, Belous, K, Bhardwaj, V, Bitenc, U, Bondar, A, Bračko, M, Browder, TE, Chang, MC, Chen, A, Chen, KF, Chen, WT, Cheon, BG, Cho, IS, Choi, Y, Dalseno, J, Dash, M, Drutskoy, A, Eidelman, S, Epifanov, D, Golob, B, Ha, H, Haba, J, Hayasaka, K, Hayashii, H, Hoshi, Y, Hou, WS, Hyun, HJ, Iijima, T, Inami, K, Ishikawa, A, Itoh, R, Iwasaki, M, Iwasaki, Y, Kah, DH, Kaji, H, Kang, JH, Katayama, N, Kawai, H, Kawasaki, T, Kichimi, H, Kim, HJ, Kim, YI, Kim, YJ, Korpar, S, Križan, P, Krokovny, P, Kumar, R, Kuzmin, A, Kwon, YJ, Kyeong, SH, Lange, JS, Lee, JS, Lee, SE, Limosani, A, Lin, SW, Liu, C, Liu, Y, Liventsev, D, Mandl, F, McOnie, S, Miyabayashi, K, Miyazaki, Y, Mori, T, Nagasaka, Y, Nakamura, I, Nakano, E, Nakao, M, Nakazawa, H, Natkaniec, Z, Nishida, S, Nitoh, O, Ogawa, S, Ohshima, T, Okuno, S, Olsen, SL, Ozaki, H, Pakhlov, P, Pakhlova, G, Palka, H, Park, CW, Park, H, Park, HK, Park, KS, Peak, LS, Piilonen, LE, Sahoo, H, Sakai, Y, Schneider, O, Senyo, K, Sevior, ME, Shapkin, M, Shen, CP, Shiu, JG, Shwartz, B, Singh, JB, Sokolov, A, Stanič, S, Starič, M, Sumiyoshi, T, Suzuki, SY, Taylor, GN, Teramoto, Y, Tikhomirov, I, Uglov, T, Unno, Y, Uno, S, Urquijo, P, Usov, Y, Varner, G, Wang, CH, Wang, P, Wang, XL, Wedd, R, Won, E, Yamashita, Y, Yusa, Y, Zhang, ZP, Zhilich, V, Zhulanov, V, Zivko, T, Zupanc, A & Zyukova, O 2008, 'High-statistics measurement of neutral-pion pair production in two-photon collisions', Physical Review D - Particles, Fields, Gravitation and Cosmology, vol. 78, no. 5, 052004. https://doi.org/10.1103/PhysRevD.78.052004

TY - JOUR

T1 - High-statistics measurement of neutral-pion pair production in two-photon collisions

AU - Uehara, S.

AU - Watanabe, Y.

AU - Adachi, I.

AU - Aihara, H.

AU - Arinstein, K.

AU - Bakich, A. M.

AU - Balagura, V.

AU - Barberio, E.

AU - Bay, A.

AU - Bedny, I.

AU - Belous, K.

AU - Bhardwaj, V.

AU - Bitenc, U.

AU - Bondar, A.

AU - Bračko, M.

AU - Browder, T. E.

AU - Chang, M. C.

AU - Chen, A.

AU - Chen, K. F.

AU - Chen, W. T.

AU - Cheon, B. G.

AU - Cho, I. S.

AU - Choi, Y.

AU - Dalseno, J.

AU - Dash, M.

AU - Drutskoy, A.

AU - Eidelman, S.

AU - Epifanov, D.

AU - Golob, B.

AU - Ha, H.

AU - Haba, J.

AU - Hayasaka, K.

AU - Hayashii, H.

AU - Hoshi, Y.

AU - Hou, W. S.

AU - Hyun, H. J.

AU - Iijima, T.

AU - Inami, K.

AU - Ishikawa, A.

AU - Itoh, R.

AU - Iwasaki, M.

AU - Iwasaki, Y.

AU - Kah, D. H.

AU - Kaji, H.

AU - Kang, J. H.

AU - Katayama, N.

AU - Kawai, H.

AU - Kawasaki, T.

AU - Kichimi, H.

AU - Kim, H. J.

AU - Kim, Y. I.

AU - Kim, Y. J.

AU - Korpar, S.

AU - Križan, P.

AU - Krokovny, P.

AU - Kumar, R.

AU - Kuzmin, A.

AU - Kwon, Y. J.

AU - Kyeong, S. H.

AU - Lange, J. S.

AU - Lee, J. S.

AU - Lee, S. E.

AU - Limosani, A.

AU - Lin, S. W.

AU - Liu, C.

AU - Liu, Y.

AU - Liventsev, D.

AU - Mandl, F.

AU - McOnie, S.

AU - Miyabayashi, K.

AU - Miyazaki, Y.

AU - Mori, T.

AU - Nagasaka, Y.

AU - Nakamura, I.

AU - Nakano, E.

AU - Nakao, M.

AU - Nakazawa, H.

AU - Natkaniec, Z.

AU - Nishida, S.

AU - Nitoh, O.

AU - Ogawa, S.

AU - Ohshima, T.

AU - Okuno, S.

AU - Olsen, S. L.

AU - Ozaki, H.

AU - Pakhlov, P.

AU - Pakhlova, G.

AU - Palka, H.

AU - Park, C. W.

AU - Park, H.

AU - Park, H. K.

AU - Park, K. S.

AU - Peak, L. S.

AU - Piilonen, L. E.

AU - Sahoo, H.

AU - Sakai, Y.

AU - Schneider, O.

AU - Senyo, K.

AU - Sevior, M. E.

AU - Shapkin, M.

AU - Shen, C. P.

AU - Shiu, J. G.

AU - Shwartz, B.

AU - Singh, J. B.

AU - Sokolov, A.

AU - Stanič, S.

AU - Starič, M.

AU - Sumiyoshi, T.

AU - Suzuki, S. Y.

AU - Taylor, G. N.

AU - Teramoto, Y.

AU - Tikhomirov, I.

AU - Uglov, T.

AU - Unno, Y.

AU - Uno, S.

AU - Urquijo, P.

AU - Usov, Y.

AU - Varner, G.

AU - Wang, C. H.

AU - Wang, P.

AU - Wang, X. L.

AU - Wedd, R.

AU - Won, E.

AU - Yamashita, Y.

AU - Yusa, Y.

AU - Zhang, Z. P.

AU - Zhilich, V.

AU - Zhulanov, V.

AU - Zivko, T.

AU - Zupanc, A.

AU - Zyukova, O.

PY - 2008/9/12

Y1 - 2008/9/12

N2 - We present a high-statistics measurement of differential cross sections and the total cross section for the process γγ→π0π0 in the kinematic range 0.6GeV≤W≤4.0GeV and |cosθ*|≤0.8, where W and θ* are the energy and pion scattering angle, respectively, in the γγ center-of-mass system. Differential cross sections are fitted to obtain information on S, D0, D2, G0, and G2 waves. The G waves are important above W1.6GeV. The general behavior of partial waves is studied by fitting differential cross sections in a simple parametrization where amplitudes contain resonant contributions and smooth background. The D2 wave is dominated by the f2(1270) meson whose parameters are consistent with the current world averages. The D0 wave contains a f2(1270) component, whose fraction is fitted. For the S wave, the f0(980) parameters are found to be consistent with the values determined from our recent π+π- data. In addition to the f0(980), the S wave prefers to have another resonance-like contribution whose parameters are obtained.

AB - We present a high-statistics measurement of differential cross sections and the total cross section for the process γγ→π0π0 in the kinematic range 0.6GeV≤W≤4.0GeV and |cosθ*|≤0.8, where W and θ* are the energy and pion scattering angle, respectively, in the γγ center-of-mass system. Differential cross sections are fitted to obtain information on S, D0, D2, G0, and G2 waves. The G waves are important above W1.6GeV. The general behavior of partial waves is studied by fitting differential cross sections in a simple parametrization where amplitudes contain resonant contributions and smooth background. The D2 wave is dominated by the f2(1270) meson whose parameters are consistent with the current world averages. The D0 wave contains a f2(1270) component, whose fraction is fitted. For the S wave, the f0(980) parameters are found to be consistent with the values determined from our recent π+π- data. In addition to the f0(980), the S wave prefers to have another resonance-like contribution whose parameters are obtained.

UR - http://www.scopus.com/inward/record.url?scp=52649181732&partnerID=8YFLogxK

U2 - 10.1103/PhysRevD.78.052004

DO - 10.1103/PhysRevD.78.052004

M3 - Article

AN - SCOPUS:52649181732

SN - 1550-7998

VL - 78

JO - Physical Review D - Particles, Fields, Gravitation and Cosmology

JF - Physical Review D - Particles, Fields, Gravitation and Cosmology

IS - 5

M1 - 052004

ER -

High-statistics measurement of neutral-pion pair production in two-photon collisions

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