Search for four-quark and six-quark exotic states with charm and strange quarks
Final Report Abstract
The goal of this DFG project has been mostly the search for ccss resonant states, in all possible mechanisms allowed at B factories. In order to cure the problem of low statistics, we merged data sets of the old BaBar and Belle experiments, waiting Belle II to complete the full data acquisition in 2030+. Despite of difficulties found at different levels, I consider overall this project a success. In fact, under the flag of DFG we can count: 98 publications with the Belle and Belle II collaborations, 3 papers explicitly related to this project were published (and other 2 are in preparation), 1 already submitted to NIM-A, and 1 PhD thesis was delivered as planned; 5 published proceedings of conferences, 10 talks at conferences (mostly invited or plenary talks), 1 DPG invited talk in Heidelberg in 2022, several management positions assigned to the PI, international cooperation established with TSNU-Kyiv, MCSA-RAISE project approved (JENNIFER2), the PI well established inside the Belle collaboration. For details, see Appendices A, B, C. All the acquired results related to this project are first measurements at B factories. FZJ was a small big group inside the Belle collaboration, in 2017-2022. Considering the charge of responsibilities and the achievement of FZJ in the Belle/Belle II collaboration, FZJ was probably one of the groups of the highest visibility in those years. Both pillars of the project, A and B, must be re-worked when Belle II will collect higher statistics. Still, the LHCb collaboration cannot compete when analyzing cs-state below the DK threshold, due to detector limitations. The recent seminar at LHCb on the X(3960)→Ds+Ds- mass, in July 2022 (see slide 44,https://indico.cern.ch/event/1176505/), shows that too little is known, and a lot has still to be done. We conclude that the analyses of ccss-states got high visibility and raised lots of interest.
Publications
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Interface of the general fitting tool GENFIT2 in PandaRoot. Journal of Physics: Conference Series, 898, 042037.
Prencipe, Elisabetta; Spataro, Stefano & Stockmanns, Tobias
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Exotics at Belle and Perspectives at Belle II. Acta Physica Polonica B Proceedings Supplement, 11(3), 447.
Prencipe, E.
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Open-charm physics: from e + e − to p̄ p machines. Journal of Physics: Conference Series, 1024, 012001.
Prencipe, Elisabetta
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Observation of a new structure near 10.75 GeV in the energy dependence of the e+e−→ ϒ (nS)π+π− (n = 1, 2, 3) cross sections. Journal of High Energy Physics, 2019(10).
Mizuk, R.; Bondar, A.; Adachi, I.; Aihara, H.; Asner, D. M.; Aulchenko, V.; Aushev, T.; Ayad, R.; Badhrees, I.; Bahinipati, S.; Bakich, A. M.; Behera, P.; Beleño, C.; Berger, M.; Bhardwaj, V.; Bilka, T.; Biswal, J.; Bozek, A. ... & Zhukova, V.
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Observation of a vector charmoniumlike state in e+e−→Ds+Ds1(2536)−+c.c.. Physical Review D, 100(11).
Jia, S.; Shen, C. P.; Yuan, C. Z.; Wang, X. L.; Adachi, I.; Aihara, H.; Asner, D. M.; Atmacan, H.; Aulchenko, V.; Ayad, R.; Babu, V.; Badhrees, I.; Bakich, A. M.; Behera, P.; Bhuyan, B.; Bilka, T.; Biswal, J.; Bobrov, A.; Bonvicini, G. ... & Zhulanov, V.
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Search for the B→Y(4260)K , Y(4260)→J/ψπ+π− decays. Physical Review D, 99(7).
Garg, R.; Bhardwaj, V.; Singh, J. B.; Adachi, I.; Ahn, J. K.; Aihara, H.; Al Said, S.; Asner, D. M.; Aulchenko, V.; Aushev, T.; Ayad, R.; Babu, V.; Bahinipati, S.; Bansal, V.; Beleño, C.; Bilka, T.; Biswal, J.; Bobrov, A.; Bozek, A. ... & Zhulanov, V.
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Evidence for a vector charmoniumlike state in e+e−→Ds+Ds2*(2573)−+c.c.. Physical Review D, 101(9).
Jia, S.; Shen, C. P.; Adachi, I.; Aihara, H.; Al Said, S.; Asner, D. M.; Atmacan, H.; Aulchenko, V.; Aushev, T.; Ayad, R.; Badhrees, I.; Behera, P.; Belous, K.; Bennett, J.; Besson, D.; Bhardwaj, V.; Bilka, T.; Biswal, J.; Bonvicini, G. ... & Zhulanov, V.
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Search for an Invisibly Decaying Z′ Boson at Belle II in e+e−→μ+μ−(e±μ∓) Plus Missing Energy Final States. Physical Review Letters, 124(14).
Adachi, I.; Ahlburg, P.; Aihara, H.; Akopov, N.; Aloisio, A.; Anh, Ky N.; Asner, D. M.; Atmacan, H.; Aushev, T.; Aushev, V.; Aziz, T.; Babu, V.; Baehr, S.; Bambade, P.; Banerjee, Sw.; Bansal, V.; Barrett, M.; Baudot, J.; Becker, J. ... & Zhukova, V. I.
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Search for transitions from ϒ(4S) and ϒ(5S) to ηb(1S) and ηb(2S) with emission of an ω meson. Physical Review D, 102(9).
Oskin, P.; Mizuk, R.; Aihara, H.; Asner, D. M.; Atmacan, H.; Aulchenko, V.; Aushev, T.; Ayad, R.; Behera, P.; Belous, K.; Bennett, J.; Bessner, M.; Bhardwaj, V.; Bhuyan, B.; Bilka, T.; Biswal, J.; Bonvicini, G.; Bozek, A.; Bračko, M. ... & Zhukova, V.
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Update of inclusive cross sections of single and pairs of identified light charged hadrons. Physical Review D, 101(9).
Seidl, R.; Adachi, I.; Aihara, H.; Asner, D. M.; Aulchenko, V.; Aushev, T.; Badhrees, I.; Behera, P.; Belous, K.; Bennett, J.; Bhuyan, B.; Biswal, J.; Bračko, M.; Browder, T. E.; Campajola, M.; Cao, L.; Červenkov, D.; Chang, M.-C. ... & Chekelian, V.
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Evidence for X(3872)→J/ψπ+π− Produced in Single-Tag Two-Photon Interactions. Physical Review Letters, 126(12).
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.; Beleño, C.; Bennett, J.; Bhardwaj, V.; Bhuyan, B.; Bilka, T.; Biswal, J.; Bonvicini, G. ... & Zhulanov, V.
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Measurement of branching fractions and CP asymmetries for Ds+→K+(η,π0) and Ds+→π+(η,π0) decays at Bell. Physical Review D, 103(11).
Guan, Y.; Schwartz, A. J.; Kinoshita, K.; Adachi, I.; Aihara, H.; Al Said, S.; Asner, D. M.; Atmacan, H.; Aulchenko, V.; Aushev, T.; Ayad, R.; Babu, V.; Behera, P.; Bennett, J.; Bessner, M.; Bhardwaj, V.; Bhuyan, B.; Bilka, T.; Biswal, J. ... & Zhukova, V.
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Precise Measurement of the D0 and D+ Lifetimes at Belle II. Physical Review Letters, 127(21).
Abudinén, F.; Adachi, I.; Adamczyk, K.; Aggarwal, L.; Ahmed, H.; Aihara, H.; Akopov, N.; Aloisio, A.; Anh, Ky N.; Asner, D. M.; Atmacan, H.; Aushev, V.; Babu, V.; Bacher, S.; Bae, H.; Baehr, S.; Bahinipati, S.; Bambade, P.; Banerjee, Sw. ... & Žlebčí, R.
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Measurement of B(Bs→DsX) with Bs semileptonic tagging. Physical Review D, 105(1).
Wang, B.; Kinoshita, K.; Aihara, H.; Asner, D. M.; Aushev, T.; Ayad, R.; Babu, V.; Badhrees, I.; Bakich, A. M.; Behera, P.; Beleño, C.; Bennett, J.; Bessner, M.; Bhardwaj, V.; Bilka, T.; Biswal, J.; Bobrov, A.; Bonvicini, G.; Bozek, A. ... & Zhulanov, V.
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Search for tetraquark states Xccs¯s¯ in Ds+Ds+(Ds*+Ds*+) final states at Belle. Physical Review D, 105(3).
Gao, X. Y.; Li, Y.; Shen, C. P.; Adachi, I.; Aihara, H.; Asner, D. M.; Atmacan, H.; Aushev, T.; Ayad, R.; Behera, P.; Belous, K.; Bessner, M.; Bhardwaj, V.; Bhuyan, B.; Bilka, T.; Bobrov, A.; Bodrov, D.; Bonvicini, G.; Borah, J. ... & Zhukova, V.
