Evidence for X (3872) →j/ψ π+ π-Produced in Single-Tag Two-Photon Interactions

  • Teramoto, Y.; 
  • Uehara, S.; 
  • Masuda, M.; 
  • Adachi, I.; 
  • Aihara, H.; 
  • ... Kim, Doris Yangsoo; 
  • 외 204명
Citations

WEB OF SCIENCE

18
Citations

SCOPUS

24

초록

We report the first evidence for X(3872) production in two-photon interactions by tagging either the electron or the positron in the final state, exploring the highly virtual photon region. The search is performed in e+e-→e+e-J/ψ π+ π-, using 825 fb-1 of data collected by the Belle detector operated at the KEKB e+e-collider. We observe three X(3872) candidates, where the expected background is 0.11±0.10 events, with a significance of 3.2σ. We obtain an estimated value for γB(X(3872)→J/ψ π+ π-) assuming the Q2 dependence predicted by a cc meson model, where-Q2 is the invariant mass squared of the virtual photon. No X(3915)→J/ψ π+ π-candidates are found. © 2021 authors. Published by the American Physical Society. Published by the American Physical Society under the terms of the https://creativecommons.org/licenses/by/4.0/Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI. Funded by SCOAP3.

키워드

Atomic physics; Physics; Belle detectors; E+e- collider; Final state; Invariant mass; Two photon; Virtual photons; Photons; article; meson; photon; positron
제목
Evidence for X (3872) →j/ψ π+ π-Produced in Single-Tag Two-Photon Interactions
저자
Teramoto, Y.; Uehara, S.; Masuda, M.; Adachi, I.; Aihara, H.; Al, Said S.; Asner, D.M.; Atmacan, H.; Aushev, T.; Ayad, R.; Babu, V.; Behera, P.; Belenõ, C.; Bennett, J.; Bhardwaj, V.; Bhuyan, B.; Bilka, T.; Biswal, J.; Bonvicini, G.; Bozek, A.; Bračko, M.; Browder, T.E.; Campajola, M.; Červenkov, D.; Chang, M.-C.; Chang, P.; Chekelian, V.; Chen, A.; Cheon, B.G.; Chilikin, K.; Cho, K.; Cho, S.-J.; Choi, S.-K.; Choi, Y.; Choudhury, S.; Cinabro, D.; Cunliffe, S.; De, Nardo G.; Di, Capua F.; DoleŽal, Z.; Dong, T.V.; Eidelman, S.; Ferber, T.; Fulsom, B.G.; Garg, R.; Gaur, V.; Gabyshev, N.; Garmash, A.; Giri, A.; Goldenzweig, P.; Greenwald, D.; Hadjivasiliou, C.; Hara, T.; Hartbrich, O.; Hayasaka, K.; Hayashii, H.; Hedges, M.T.; Hernandez, Villanueva M.; Hou, W.-S.; Hsu, C.-L.; Iijima, T.; Inami, K.; Inguglia, G.; Ishikawa, A.; Itoh, R.; Iwasaki, M.; Iwasaki, Y.; Jacobs, W.W.; Jang, E.-J.; Jia, S.; Jin, Y.; Joo, C.W.; Joo, K.K.; Kahn, J.; Kaliyar, A.B.; Kang, K.H.; Karyan, G.; Kato, Y.; Kawasaki, T.; Kichimi, H.; Kiesling, C.; Kim, B.H.; Kim, Doris Yangsoo; Kim, S.H.; Kim, Y.-K.; Kimmel, T.D.; Kinoshita, K.; Kodyš, P.; Korpar, S.; Kotchetkov, D.; KriŽan, P.; Kroeger, R.; Krokovny, P.; Kuhr, T.; Kulasiri, R.; Kumar, R.; Kumara, K.; Kuzmin, A.; Kwon, Y.-J.; Lalwani, K.; Lange, J.S.; Lee, I.S.; Lee, S.C.; Lewis, P.; Li, L.K.; Li, Y.B.; Li, Gioi L.; Libby, J.; Lieret, K.; Liptak, Z.; Liventsev, D.; Luo, T.; MacQueen, C.; Matsuda, T.; Matvienko, D.; Merola, M.; Miyabayashi, K.; Miyata, H.; Mohanty, G.B.; Mohanty, S.; Moon, T.J.; Mori, T.; Mrvar, M.; Mussa, R.; Nakano, E.; Nakao, M.; Nakazawa, H.; Natkaniec, Z.; Natochii, A.; Nayak, M.; Nisar, N.K.; Nishida, S.; Ogawa, K.; Ogawa, S.; Ono, H.; Onuki, Y.; Pakhlov, P.; Pakhlova, G.; Pardi, S.; Park, H.; Park, S.-H.; Patra, S.; Paul, S.; Pedlar, T.K.; Pestotnik, R.; Piilonen, L.E.; Podobnik, T.; Popov, V.; Prencipe, E.; Prim, M.T.; Ritter, M.; Rostomyan, A.; Rout, N.; Russo, G.; Sahoo, D.; Sakai, Y.; Sandilya, S.; Sangal, A.; Santelj, L.; Sanuki, T.; Savinov, V.; Schnell, G.; Schueler, J.; Schwanda, C.; Seino, Y.; Senyo, K.; Sevior, M.E.; Shapkin, M.; Shebalin, V.; Shiu, J.-G.; Singh, J.B.; Solovieva, E.; Starič, M.; Stottler, Z.S.; Sumihama, M.; Sumisawa, K.; Sumiyoshi, T.; Sutcliffe, W.; Takizawa, M.; Tamponi, U.; Tenchini, F.; Uchida, M.; Uglov, T.; Unno, Y.; Uno, S.; Urquijo, P.; Usov, Y.; Van, Tonder R.; Varner, G.; Vinokurova, A.; Vorobyev, V.; Waheed, E.; Wang, C.H.; Wang, E.; Wang, M.-Z.; Wang, P.; Wang, X.L.; Watanabe, M.; Won, E.; Xu, X.; Yabsley, B.D.; Yang, S.B.; Ye, H.; Yelton, J.; Yin, J.H.; Zhang, Z.P.; Zhilich, V.; Zhukova, V.; Zhulanov, V.; (Belle Collaboration)
DOI
10.1103/PhysRevLett.126.122001
발행일
2021-03-23
유형
Article
저널명
Physical Review Letters
권
126
호
12