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Search for the doubly heavy baryon Ξbc+ decaying to J/ψΞc+

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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.; Tuning, N.; Mauri, A.; Usachov, A.; Lukashenko, V.; Heijhoff, K.; Veronesi, M.; Akiba, K.; Aaij, R.; Aaij, R; Snoch, A.; van Beuzekom, M.; Biolchini, A.; Martinez, M. Lucio; Jans, E.; Greeven, L. M.; Geertsema, R. E.; Gabriel, E.; Merk, M.; Butter, J. S.; Koppenburg, P.; Soares, M. Senghi; Klaver, S.; Gras, C. Sanchez; Raven, G.; Sole, S. Ferreres; Kostiuk, I.; Schubiger, M.; Hulsbergen, W.] Nikhef Natl Inst Subat Phys, Amsterdam, Netherlands.
[De Freitas Carneiro Da Graca, U.; Massafferri, A.; De Miranda, J. M.; Baptista De Souza Leite, J.; Falcao, L. N.; Bediaga, I. B.; Torres, M. Cruz; Gomes, A.; Torres Machado, D.; dos Reis, A. C.] Ctr Brasileiro Pesquisas Fisicas CBPF, Rio De Janeiro, Brazil.
[Lopes, J. H.; Goicochea, J. M. Otalora; Polycarpo, E.; Souza De Paula, B.; Souza De Almeida, F. L.; Gandelman, M.; Rangel, M. S.; Ferreira Rodrigues, F.; Hicheur, A.; Garcia, L. Meyer; Barbetti, M.; De Paula, L.; Nasteva, I.; Amato, S.] Univ Fed Rio De Janeiro UFRJ, Rio De Janeiro, Brazil.
[Wang, Z.; Qu, S.; Qin, N.; Ren, Z.; Xu, L.; Tou, D. Y.; Wang, J.; Hu, X.; Gu, C.; Gong, G.; Kang, Y.; Qi, H. R.; Chen, C.; Zhu, X.; 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.; Wang, J.; Chen, S.; Tobin, M.; Grieser, N. A.; Jiang, X.; Batsukh, B.; Zou, Q.; Liu, S.; Carli, I.] Inst High Energy Phys IHEP, Beijing, Peoples R China.
通讯机构:
[Aaij, R ] N
Nikhef Natl Inst Subat Phys, Amsterdam, Netherlands.
语种:
英文
关键词:
W/Z;boson;rare;decay;upper;limit;of;branching;fraction
期刊:
中国物理C
ISSN:
1674-1137
年:
2023
卷:
47
期:
9
页码:
14-26
基金类别:
The project support from CERN and from the national agencies:CAPES,CNPq,FAPERJ and FINEP(Brazil) MOST and NSFC(China) CNRS/IN2P3(France) BMBF,DFG and MPG(Germany) INFN(Italy) NWO(Netherlands) MNiSW and NCN(Poland) MEN/IFA(Romania) MICINN(Spain) SNSF and SER(Switzerland) NASU(Ukraine) STFC(United Kingdom) DOE NP and NSF(USA).We acknowledge the computing resources that are provided by CERN,IN2P3(France),KIT and DESY(Germany),INFN(Italy),SURF(Netherlands),PIC(Spain),GridPP(United Kingdom),CSCS(Switzerland),IFIN-HH(Romania),CBPF(Brazil),Polish WLCG(Poland)and NERSC(USA).Individual groups or members have received support from ARC and ARDC(Australia) Minciencias(Colombia) AvH Foundation(Germany) EPLANET,Marie Sklodowska-Curie Actions and ERC(European Union) A*MIDEX,ANR,IPhU and Labex P2IO,and Région Auvergne-RhôneAlpes(France) Key Research Program of Frontier Sciences of CAS,CAS PIFI,CAS CCEPP,Fundamental Research Funds for the Central Universities,and Sci.&Tech.Program of Guangzhou(China) GVA,XuntaGal,GENCAT and Prog.Atracción Talento,CM(Spain) SRC(Sweden) the Leverhulme Trust,the Royal Society and 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 first search for the Xi(+)(bc) -> J/psi Xi c+ decay is performed by the LHCb experiment with a data sample of proton-proton collisions, corresponding to an integrated luminosity of 9 fb(-1) recorded at centre-of-mass energies of 7, 8, and 13 TeV. Two peaking structures are seen with a local (global) significance of and standard deviations at masses of 6571 and 6694 MeV/c(2), respectively. Upper limits are set on the Xi(+)(bc) baryon production cross-section times the branching fraction relative to that of the B-c(+) -> J/psi Xi(+)(c) decay at centre-of-mass energies of 8 and 13 TeV, in the X...
摘要(中文):
A first search for the Ξbc+J/ψΞc+ decay is performed by the LHCb e...展开更多 A first search for the Ξbc+J/ψΞc+ decay is performed by the LHCb experiment with a data sample of proton-proton collisions, corresponding to an integrated luminosity of 9 fb−1 recorded at centre-of-mass energies of 7, 8, and 13 TeV. Two peaking structures are seen with a local (global) significance of 4.3(2.8) and 4.1(2.4) standard deviations at masses of 6571 and 6694 MeV/c2, respectively. Upper limits are set on the Ξ+bc baryon production cross-section times...

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