Search for Pentaquarks in the Hadronic Decays of the Z Boson with the DELPHI Detector at LEP.

Physics

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https://doi.org/10.1016/j.physletb.2007.08.005
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Search for Pentaquarks in the Hadronic Decays of the Z Boson with the DELPHI Detector at LEP. / Abdallah, J.; Sopczak, Andre; DELPHI Collaboration, et al.
In: Physics Letters B, Vol. 653, No. 2-4, 20.09.2007, p. 151-160.

Research output: Contribution to Journal/Magazine › Journal article › peer-review

Harvard

Abdallah, J, Sopczak, A & DELPHI Collaboration, EA 2007, 'Search for Pentaquarks in the Hadronic Decays of the Z Boson with the DELPHI Detector at LEP.', Physics Letters B, vol. 653, no. 2-4, pp. 151-160. https://doi.org/10.1016/j.physletb.2007.08.005

APA

Abdallah, J., Sopczak, A., & DELPHI Collaboration, E. A. (2007). Search for Pentaquarks in the Hadronic Decays of the Z Boson with the DELPHI Detector at LEP. Physics Letters B, 653(2-4), 151-160. https://doi.org/10.1016/j.physletb.2007.08.005

Vancouver

Abdallah J, Sopczak A, DELPHI Collaboration EA. Search for Pentaquarks in the Hadronic Decays of the Z Boson with the DELPHI Detector at LEP. Physics Letters B. 2007 Sept 20;653(2-4):151-160. doi: 10.1016/j.physletb.2007.08.005

Author

Abdallah, J. ; Sopczak, Andre ; DELPHI Collaboration, et al. / Search for Pentaquarks in the Hadronic Decays of the Z Boson with the DELPHI Detector at LEP. In: Physics Letters B. 2007 ; Vol. 653, No. 2-4. pp. 151-160.

Bibtex

@article{7d12415613f647bb912b813605a9dbbc,

title = "Search for Pentaquarks in the Hadronic Decays of the Z Boson with the DELPHI Detector at LEP.",

abstract = "The quark model does not exclude states composed of more than three quarks, like pentaquark systems. Controversial evidence for such states has been published in the last years, in particular: for a strange pentaquark Θ(1540)+; for a double-strange state, the Ξ(1862)−−, subsequently called Φ(1860)−−; and for a charmed state, the Θc(3100)0. If confirmed, a full pentaquark family might exist; such pentaquark states could be produced in e+e− annihilations near the Z energy. In this Letter a search for pentaquarks is described using the DELPHI detector at LEP, characterized by powerful particle identification sub-systems crucial in the separation of the signal from the background for these states. At 95% CL, upper limits are set on the production rates N of such particles and their charge-conjugate state per Z decay: , NΘ++<1.6×10−3, NΦ(1860)−−×Br(Φ(1860)−−→Ξ−π−)<2.9×10−4, .",

author = "J. Abdallah and Andre Sopczak and {DELPHI Collaboration}, {et al.}",

year = "2007",

month = sep,

day = "20",

doi = "10.1016/j.physletb.2007.08.005",

language = "English",

volume = "653",

pages = "151--160",

journal = "Physics Letters B",

issn = "0370-2693",

publisher = "ELSEVIER SCIENCE BV",

number = "2-4",

}

RIS

TY - JOUR

T1 - Search for Pentaquarks in the Hadronic Decays of the Z Boson with the DELPHI Detector at LEP.

AU - Abdallah, J.

AU - Sopczak, Andre

AU - DELPHI Collaboration, et al.

PY - 2007/9/20

Y1 - 2007/9/20

N2 - The quark model does not exclude states composed of more than three quarks, like pentaquark systems. Controversial evidence for such states has been published in the last years, in particular: for a strange pentaquark Θ(1540)+; for a double-strange state, the Ξ(1862)−−, subsequently called Φ(1860)−−; and for a charmed state, the Θc(3100)0. If confirmed, a full pentaquark family might exist; such pentaquark states could be produced in e+e− annihilations near the Z energy. In this Letter a search for pentaquarks is described using the DELPHI detector at LEP, characterized by powerful particle identification sub-systems crucial in the separation of the signal from the background for these states. At 95% CL, upper limits are set on the production rates N of such particles and their charge-conjugate state per Z decay: , NΘ++<1.6×10−3, NΦ(1860)−−×Br(Φ(1860)−−→Ξ−π−)<2.9×10−4, .

AB - The quark model does not exclude states composed of more than three quarks, like pentaquark systems. Controversial evidence for such states has been published in the last years, in particular: for a strange pentaquark Θ(1540)+; for a double-strange state, the Ξ(1862)−−, subsequently called Φ(1860)−−; and for a charmed state, the Θc(3100)0. If confirmed, a full pentaquark family might exist; such pentaquark states could be produced in e+e− annihilations near the Z energy. In this Letter a search for pentaquarks is described using the DELPHI detector at LEP, characterized by powerful particle identification sub-systems crucial in the separation of the signal from the background for these states. At 95% CL, upper limits are set on the production rates N of such particles and their charge-conjugate state per Z decay: , NΘ++<1.6×10−3, NΦ(1860)−−×Br(Φ(1860)−−→Ξ−π−)<2.9×10−4, .

U2 - 10.1016/j.physletb.2007.08.005

DO - 10.1016/j.physletb.2007.08.005

M3 - Journal article

VL - 653

SP - 151

EP - 160

JO - Physics Letters B

JF - Physics Letters B

SN - 0370-2693

IS - 2-4

ER -

Research

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