Inclusive production of the omega and eta mesons in Z decays, and the muonic branching ratio of the omega

Physics

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https://doi.org/10.1016/S0370-2693(02)01220-0
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Inclusive production of the omega and eta mesons in Z decays, and the muonic branching ratio of the omega. / ALEPH Collaboration, The; Heister, A.; Bouhova-Thacker, Evelina et al.
In: Physics Letters B, Vol. 528, No. 1-2, 28.02.2002, p. 19-33.

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

Bibtex

@article{bab073c0ff3a47d39528c8d782ab4c95,

title = "Inclusive production of the omega and eta mesons in Z decays, and the muonic branching ratio of the omega",

abstract = "The inclusive production of the η and ω(782) mesons is measured in the π+π−π0 decay mode in hadronic Z decays and compared to model predictions. The analysis is based on 4 million hadronic Z decays recorded by the ALEPH detector between 1991 and 1995. The η production rate for xp=pmeson/pbeam>0.10 is found to be 0.355±0.011stat±0.024sys per event, and the ω production rate for xp>0.05 is measured as 0.585±0.019stat±0.033sys per event. The branching ratio for ω→μ+μ− is investigated. A total of 18.1±5.9 events are observed, from which the muonic branching ratio is measured for the first time to be BR(ω→μ+μ−)=(9.0±2.9stat±1.1sys)×10−5.",

author = "{ALEPH Collaboration}, The and A. Heister and Evelina Bouhova-Thacker and Christopher Bowdery and Alexander Finch and Frank Foster and Gareth Hughes and Roger Jones",

year = "2002",

month = feb,

day = "28",

doi = "10.1016/S0370-2693(02)01220-0",

language = "English",

volume = "528",

pages = "19--33",

journal = "Physics Letters B",

issn = "0370-2693",

publisher = "ELSEVIER SCIENCE BV",

number = "1-2",

}

RIS

TY - JOUR

T1 - Inclusive production of the omega and eta mesons in Z decays, and the muonic branching ratio of the omega

AU - ALEPH Collaboration, The

AU - Heister, A.

AU - Bouhova-Thacker, Evelina

AU - Bowdery, Christopher

AU - Finch, Alexander

AU - Foster, Frank

AU - Hughes, Gareth

AU - Jones, Roger

PY - 2002/2/28

Y1 - 2002/2/28

N2 - The inclusive production of the η and ω(782) mesons is measured in the π+π−π0 decay mode in hadronic Z decays and compared to model predictions. The analysis is based on 4 million hadronic Z decays recorded by the ALEPH detector between 1991 and 1995. The η production rate for xp=pmeson/pbeam>0.10 is found to be 0.355±0.011stat±0.024sys per event, and the ω production rate for xp>0.05 is measured as 0.585±0.019stat±0.033sys per event. The branching ratio for ω→μ+μ− is investigated. A total of 18.1±5.9 events are observed, from which the muonic branching ratio is measured for the first time to be BR(ω→μ+μ−)=(9.0±2.9stat±1.1sys)×10−5.

AB - The inclusive production of the η and ω(782) mesons is measured in the π+π−π0 decay mode in hadronic Z decays and compared to model predictions. The analysis is based on 4 million hadronic Z decays recorded by the ALEPH detector between 1991 and 1995. The η production rate for xp=pmeson/pbeam>0.10 is found to be 0.355±0.011stat±0.024sys per event, and the ω production rate for xp>0.05 is measured as 0.585±0.019stat±0.033sys per event. The branching ratio for ω→μ+μ− is investigated. A total of 18.1±5.9 events are observed, from which the muonic branching ratio is measured for the first time to be BR(ω→μ+μ−)=(9.0±2.9stat±1.1sys)×10−5.

U2 - 10.1016/S0370-2693(02)01220-0

DO - 10.1016/S0370-2693(02)01220-0

M3 - Journal article

VL - 528

SP - 19

EP - 33

JO - Physics Letters B

JF - Physics Letters B

SN - 0370-2693

IS - 1-2

ER -

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