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First Observation of a Doubly Charged Tetraquark and Its Neutral Partner

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成果类型:
期刊论文
作者:
Aaij, R.;Abdelmotteleb, A. S. W.;Beteta, C. Abellan;Abudinen, F.;Ackernley, T.;...
通讯作者:
Aaij, R
作者机构:
[Ketel, T.; Mulder, M.; Tuning, N.; Perez, D. H. Campora; Mauri, A.; Usachov, A.; de Vries, J. A.; Lukashenko, V.; Galati, M. D.; Heijhoff, K.; Sanchez Gras, C.; Veronesi, M.; Akiba, K.; Aaij, R.; Aaij, R; Snoch, A.; De Bruyn, K.; van Beuzekom, M.; Biolchini, A.; Martinez, M. Lucio; Jans, E.; Vos, K.; Geertsema, R. E.; Pellegrino, A.; Gabriel, E.; Grecu, A. T.; Merk, M.; Onderwater, C. J. G.; Bolognani, C. S.; van Veghel, M.; Butter, J. S.; Koppenburg, P.; Pawley, C. J.; Soares, M. Senghi; Klaver, S.; Raven, G.; Sole, S. Ferreres; Kostiuk, I.; Schubiger, M.; Hulsbergen, W.] Nikhef Natl Inst Subatom Phys, Amsterdam, Netherlands.
[Massafferri, A.; De Miranda, J. M.; Falcao, L. N.; Bediaga, I. B.; de Souza Leite, J. Baptista; Torres, M. Cruz; Machado, D. Torres; Gomes, A.; Carneiro Da Graca, U. De Freitas; dos Reis, A. C.; Santovetti, E.] Ctr Brasileiro Pesquisas Fis CBPF, Rio De Janeiro, Brazil.
[De Paula, B. Souza; Lopes, J. H.; Polycarpo, E.; Souza De Almeida, F. L.; Gandelman, M.; Gobel, C.; Rangel, M. S.; Hicheur, A.; Otalora Goicochea, J. M.; Garcia, L. Meyer; Rodrigues, F. Ferreira; De Paula, L.; Nasteva, I.; Amato, S.] Univ Fed Rio De Janeiro UFRJ, Rio De Janeiro, Brazil.
[Cai, H.; Bian, L.; Liu, G.; Qu, S.; Qin, N.; Ren, Z.; Xu, L.; Tou, D. Y.; Huang, X.; Li, H.; Li, A.; Hu, X.; Grauges, E.; Tan, Y.; Gu, C.; Gong, G.; Wang, X.; Bursche, A.; Kang, Y.; Fang, B.; Qi, H. R.; Chen, C.; Zhu, X.; Sun, L.; Luo, Y.; Yang, D.; Mu, H.; Zeng, M.; Dong, C.; Zhang, L.; Gan, Y.] Tsinghua Univ, Ctr High Energy Phys, Beijing, Peoples R China.
[Lu, Y.; Li, Y.; Ma, L.; Sheng, S.; Chen, S.; Greeven, L. M.; Li, P. -R.; Tobin, M.; Miao, D.; Jiang, X.; Batsukh, B.; Zou, Q.; Liu, S.] Inst High Energy Phys IHEP, Beijing, Peoples R China.
通讯机构:
[Aaij, R ] N
Nikhef Natl Inst Subatom Phys, Amsterdam, Netherlands.
语种:
英文
期刊:
PHYSICAL REVIEW LETTERS
ISSN:
0031-9007
年:
2023
卷:
131
期:
4
页码:
041902
基金类别:
CAPES (Brazil); CNPq (Brazil); FAPERJ (Brazil); FINEP (Brazil); MOST (China); NSFC (China); CNRS/IN2P3 (France); BMBF (Germany); MPG (Germany); NWO (Netherlands); DFG (Germany); MNiSW (Poland); INFN (Italy); NCN (Poland); STFC (United Kingdom); MEN/IFA (Romania); ARDC (Australia); MICINN (Spain); Minciencias (Colombia); SNSF (Switzerland); Marie Sklodowska-Curie Actions (European Union); SER (Switzerland); IPhU (France); NASU (Ukraine); Labex P2IO (France); DOE NP (USA); Region Auvergne-Rhpne-Alpes (France); NSF (USA); CAS PIFI (China); CAS CCEPP (China); ARC (Australia); AvH Foundation (Germany); EPLANET (European Union); ERC (European Union); A*MIDEX (France); ANR (France); Key Research Program of Frontier Sciences of CAS (China); Fundamental Research Funds for the Central Universities (China); Sci. amp; Tech. Program of Guangzhou (China); GVA (Spain); GENCAT (Spain); Prog. Atraccion Talento, CM (Spain); SRC (Sweden); Leverhulme Trust (United Kingdom); Royal Society (United Kingdom); UKRI (United Kingdom)
机构署名:
本校为其他机构
院系归属:
物理科学与技术学院
摘要:
A combined amplitude analysis is performed for the decays B0-+ D0D thorn s & pi;- and B thorn -+ D-D thorn s & pi; thorn , which are related by isospin symmetry. The analysis is based on data collected by the LHCb detector in proton -proton collisions at center-of-mass energies of 7, 8, and 13 TeV. The full data sample corresponds to an integrated luminosity of 9 fb-1. Two new resonant states with masses of 2.908 ⠂ 0.011 ⠂ 0.020 GeV and widths of 0.136 ⠂ 0.023 ⠂ 0.013 GeV are observed, which decay to D thorn s & pi; thorn and D thorn s & pi...

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