Study of π0 pair production in single-tag two-photon collisions

Masuda, M.; Uehara, S.; Watanabe, Y.; Nakazawa, H.; Abdesselam, A.; Adachi, I.; Aihara, H.; Al Said, S.; Asner, D. M.; Atmacan, H.; Aulchenko, V.; Aushev, T.; Babu, V.; Badhrees, I.; Bakich, A. M.; Barberio, E.; Behera, P.; Bhuyan, B.; Biswal, J.; Bobrov, A.; Bonvicini, G.; Bozek, A.; Bračko, M.; Browder, T. E.; Červenkov, D.; Chekelian, V.; Chen, A.; Cheon, B. G.; Chilikin, K.; Chistov, R.; Cho, K.; Chobanova, V.; Choi, S. -K.; Choi, Y.; Cinabro, D.; Dalseno, J.; Danilov, M.; Dash, N.; Dingfelder, J.; Doležal, Z.; Drásal, Z.; Dutta, D.; Eidelman, S.; Epifanov, D.; Farhat, H.; Fast, J. E.; Ferber, T.; Fulsom, B. G.; Gaur, V.; Gabyshev, N.; Garmash, A.; Gillard, R.; Giordano, F.; Glattauer, R.; Goh, Y. M.; Goldenzweig, P.; Golob, B.; Haba, J.; Hayasaka, K.; Hayashii, H.; He, X. H.; Hou, W. -S.; Iijima, T.; Inami, K.; Ishikawa, A.; Itoh, R.; Iwasaki, Y.; Jaegle, I.; Joffe, D.; Joo, K. K.; Julius, T.; Kang, K. H.; Kato, E.; Kawasaki, T.; Kim, D. Y.; Kim, J. B.; Kim, J. H.; Kim, K. T.; Kim, M. J.; Kim, S. H.; Kim, Y. J.; Ko, B. R.; Korpar, S.; Križan, P.; Krokovny, P.; Kumita, T.; Kuzmin, A.; Kwon, Y. -J.; Lange, J. S.; Lee, D. H.; Lee, I. S.; Li, C.; Li, L.; Li, Y.; Libby, J.; Liventsev, D.; Lukin, P.; Matvienko, D.; Miyabayashi, K.; Miyata, H.; Mizuk, R.; Mohanty, G. B.; Mohanty, S.; Moll, A.; Moon, H. K.; Mori, T.; Mussa, R.; Nakano, E.; Nakao, M.; Nanut, T.; Natkaniec, Z.; Nayak, M.; Nisar, N. K.; Nishida, S.; Ogawa, S.; Pakhlov, P.; Pakhlova, G.; Pal, B.; Park, C. W.; Park, H.; Pedlar, T. K.; Pestotnik, R.; Petrič, M.; Piilonen, L. E.; Rauch, J.; Ribežl, E.; Ritter, M.; Rostomyan, A.; Sandilya, S.; Santelj, L.; Sanuki, T.; Sato, Y.; Savinov, V.; Schneider, O.; Schnell, G.; Schwanda, C.; Seino, Y.; Senyo, K.; Seon, O.; Sevior, M. E.; Shebalin, V.; Shen, C. P.; Shibata, T. -A.; Shiu, J. -G.; Shwartz, B.; Simon, F.; Sohn, Y. -S.; Sokolov, A.; Solovieva, E.; Starič, M.; Sumihama, M.; Sumiyoshi, T.; Tamponi, U.; Tanida, K.; Teramoto, Y.; Uglov, T.; Unno, Y.; Uno, S.; Van Hulse, C.; Vanhoefer, P.; Varner, G.; Vinokurova, A.; Vorobyev, V.; Vossen, A.; Wagner, M. N.; Wang, C. H.; Wang, M. -Z.; Wang, P.; Williams, K. M.; Won, E.; Yamaoka, J.; Yamashita, Y.; Yashchenko, S.; Ye, H.; Yusa, Y.; Zhang, C. C.; Zhang, Z. P.; Zhilich, V.; Zhulanov, V.; Zupanc, A.

doi:10.1103/PhysRevD.93.032003

Title: Study of $π^{0}$ pair production in single-tag two-photon collisions

Journal Article · Thu Feb 18 00:00:00 EST 2016 · Physical Review D

DOI:https://doi.org/10.1103/PhysRevD.93.032003· OSTI ID:1594402

Masuda, M.; Uehara, S.; Watanabe, Y.; Nakazawa, H.; Abdesselam, A.; Adachi, I.; Aihara, H.; Al Said, S.; Asner, D. M.; Atmacan, H.; Aulchenko, V.; Aushev, T.; Babu, V.; Badhrees, I.; Bakich, A. M.; Barberio, E.; Behera, P.; Bhuyan, B.; Biswal, J.; Bobrov, A. more »

We report a measurement of the differential cross section of π⁰ pair production in single-tag two-photon collisions, γ*γ→π⁰π⁰, in e⁺e^- scattering. The cross section is measured for Q² up to 30 GeV², where Q² is the negative of the invariant mass squared of the tagged photon, in the kinematic range 0.5 GeV < W < 2.1 GeV and |cosθ*| < 1.0 for the total energy and pion scattering angle, respectively, in the γ*γ center-of-mass system. The results are based on a data sample of 759 fb^-1 collected with the Belle detector at the KEKB asymmetric-energy e⁺e^- collider. The transition form factor of the f₀(980) and that of the f₂(1270) with the helicity-0, -1, and -2 components separately are measured for the first time and are compared with theoretical calculations.

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Research Organization:: Virginia Polytechnic Inst. and State Univ. (Virginia Tech), Blacksburg, VA (United States)

Sponsoring Organization:: USDOE Office of Science (SC), High Energy Physics (HEP)

Contributing Organization:: The Belle Collaboration

Grant/Contract Number:: SC0009973; AC05-76RL01830

OSTI ID:: 1594402

Alternate ID(s):: OSTI ID: 1238398

Report Number(s):: PNNL-SA-115018; PRVDAQ; TRN: US2101580

Journal Information:: Physical Review D, Vol. 93, Issue 3; ISSN 2470-0010

Publisher:: American Physical Society (APS)Copyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 46 works

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Title: Study of π 0 pair production in single-tag two-photon collisions

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