Inclusive production of the η and ω mesons in Z decays, and the muonic branching ratio of the ω

A. Heister; S. Schael; R. Barate; I. De Bonis; D. Decamp; C. Goy; J. P. Lees; E. Merle; M. N. Minard; B. Pietrzyk; G. Boix; S. Bravo; M. P. Casado; M. Chmeissani; J. M. Crespo; E. Fernandez; M. Fernandez-Bosman; Ll Garrido; E. Graugés; M. Martinez; G. Merino; R. Miquel; Ll M. Mir; A. Pacheco; H. Ruiz; A. Colaleo; D. Creanza; M. De Palma; G. Iaselli; G. Maggi; M. Maggi; S. Nuzzo; A. Ranieri; G. Raso

doi:10.1016/S0370-2693(02)01220-0

Inclusive production of the η and ω mesons in Z decays, and the muonic branching ratio of the ω

A. Heister, S. Schael, R. Barate, I. De Bonis, D. Decamp, C. Goy, J. P. Lees, E. Merle, M. N. Minard, B. Pietrzyk, G. Boix, S. Bravo, M. P. Casado, M. Chmeissani, J. M. Crespo, E. Fernandez, M. Fernandez-Bosman, Ll Garrido, E. Graugés, M. MartinezG. Merino, R. Miquel, Ll M. Mir, A. Pacheco, H. Ruiz, A. Colaleo, D. Creanza, M. De Palma, G. Iaselli, G. Maggi, M. Maggi, S. Nuzzo, A. Ranieri, G. Raso

Department of Physics

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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. © 2002 Elsevier Science B.V. All rights reserved.

Original language	English
Pages (from-to)	19-33
Journal	Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume	528
Issue number	1-2
DOIs	https://doi.org/10.1016/S0370-2693(02)01220-0
Publication status	Published - 28 Feb 2002

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Heister, A., Schael, S., Barate, R., De Bonis, I., Decamp, D., Goy, C., Lees, J. P., Merle, E., Minard, M. N., Pietrzyk, B., Boix, G., Bravo, S., Casado, M. P., Chmeissani, M., Crespo, J. M., Fernandez, E., Fernandez-Bosman, M., Garrido, L., Graugés, E., ... Raso, G. (2002). Inclusive production of the η and ω mesons in Z decays, and the muonic branching ratio of the ω. Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 528(1-2), 19-33. https://doi.org/10.1016/S0370-2693(02)01220-0

@article{39ad2bc2ef2e43749f7b1c721f466713,

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

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. {\textcopyright} 2002 Elsevier Science B.V. All rights reserved.",

author = "A. Heister and S. Schael and R. Barate and {De Bonis}, I. and D. Decamp and C. Goy and Lees, {J. P.} and E. Merle and Minard, {M. N.} and B. Pietrzyk and G. Boix and S. Bravo and Casado, {M. P.} and M. Chmeissani and Crespo, {J. M.} and E. Fernandez and M. Fernandez-Bosman and Ll Garrido and E. Graug{\'e}s and M. Martinez and G. Merino and R. Miquel and Mir, {Ll M.} and A. Pacheco and H. Ruiz and A. Colaleo and D. Creanza and {De Palma}, M. and G. Iaselli and G. Maggi and M. Maggi and S. Nuzzo and A. Ranieri and G. Raso",

year = "2002",

month = feb,

day = "28",

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

language = "English",

volume = "528",

pages = "19--33",

journal = "Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics",

issn = "0370-2693",

publisher = "Elsevier",

number = "1-2",

}

Heister, A, Schael, S, Barate, R, De Bonis, I, Decamp, D, Goy, C, Lees, JP, Merle, E, Minard, MN, Pietrzyk, B, Boix, G, Bravo, S, Casado, MP, Chmeissani, M, Crespo, JM , Fernandez, E, Fernandez-Bosman, M, Garrido, L, Graugés, E, Martinez, M, Merino, G, Miquel, R, Mir, LM, Pacheco, A, Ruiz, H, Colaleo, A, Creanza, D, De Palma, M, Iaselli, G, Maggi, G, Maggi, M, Nuzzo, S, Ranieri, A & Raso, G 2002, 'Inclusive production of the η and ω mesons in Z decays, and the muonic branching ratio of the ω', Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, vol. 528, no. 1-2, pp. 19-33. https://doi.org/10.1016/S0370-2693(02)01220-0

TY - JOUR

T1 - Inclusive production of the η and ω mesons in Z decays, and the muonic branching ratio of the ω

AU - Heister, A.

AU - Schael, S.

AU - Barate, R.

AU - De Bonis, I.

AU - Decamp, D.

AU - Goy, C.

AU - Lees, J. P.

AU - Merle, E.

AU - Minard, M. N.

AU - Pietrzyk, B.

AU - Boix, G.

AU - Bravo, S.

AU - Casado, M. P.

AU - Chmeissani, M.

AU - Crespo, J. M.

AU - Fernandez, E.

AU - Fernandez-Bosman, M.

AU - Garrido, Ll

AU - Graugés, E.

AU - Martinez, M.

AU - Merino, G.

AU - Miquel, R.

AU - Mir, Ll M.

AU - Pacheco, A.

AU - Ruiz, H.

AU - Colaleo, A.

AU - Creanza, D.

AU - De Palma, M.

AU - Iaselli, G.

AU - Maggi, G.

AU - Maggi, M.

AU - Nuzzo, S.

AU - Ranieri, A.

AU - Raso, G.

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. © 2002 Elsevier Science B.V. All rights reserved.

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. © 2002 Elsevier Science B.V. All rights reserved.

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

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

M3 - Article

SN - 0370-2693

VL - 528

SP - 19

EP - 33

JO - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

JF - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

IS - 1-2

ER -

Inclusive production of the η and ω mesons in Z decays, and the muonic branching ratio of the ω

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