K0                      S production in τ decays

The ALEPH Collaboration

doi:10.1007/s100529800879

K⁰ _S production in τ decays

The ALEPH Collaboration

Université Paris-Sud
University of São Paulo
INFN Sezione di Bari
INFN Sezione di Catania
Institute of High Energy Physics, Chinese Academy of Sciences
European Organization for Nuclear Research
Université Blaise Pascal
Niels Bohr Institutet
NCSR Demokritos
University of Florence
Florida State University
LNF-INFN
University of Turin
Ev-K2-CNR Committee
University of Glasgow
University of Heidelberg
Imperial College London
University of Innsbruck
Lancaster University
Johannes Gutenberg University
University of Milano
Max-Planck-Institut für Physik
Laboratoire de l'Accélérateur Linéaire
Istituto Nazionale di Fisica Nucleare, Sezione di Pisa
Dipartimento di Scienze Biomediche
King's College London
Rutherford Appleton Laboratory
CEA, Irfu, SPP
University of California at Santa Cruz
The University of Sheffield
Universität Siegen
University of Trieste
University of Washington
University of Wisconsin-Madison

Résultats de recherche: Contribution à un journal › Article › Revue par des pairs

28 Citations (Scopus)

Résumé

From a sample of about 160k Z → τ⁺τ^- candidates collected with the ALEPH detector at LEP between 1991 and 1995, τ lepton decays involving K⁰ _S → π⁺π^- are studied. The K⁰ _SK⁰ _L associated production in τ decays is also investigated. The branching ratios are measured for the inclusive decay B(τ^-→K⁰ _SX^-ν _τ) = (9.70±0.58±0.62) × 10^-3, where X^- can be anything, and for the exclusive decays B(τ^-→K̄⁰π^-ν _τ) = (8.55±1.17±0.66) × 10^-3, B(τ^-→K̄⁰π^-π ⁰ν_τ) = (2.94±0.73±0.37) × 10^-3, B(τ^-→K̄⁰K^-ν_τ) = (1.58±0.42±0.17) × 10^-3, B(τ^-→K̄⁰K^-π ⁰ν_τ) = (1.52±0.76±0.21) × 10^-3. The decay τ^-→K⁰ _SK⁰ _Lπ^-ν_τ is studied for the first time, giving a branching ratio B(τ^-→K⁰ _SK⁰ _Lπ^-ν_τ) = (1.01±0.23±0.13) × 10^-3. The channels τ^- → K⁰ _SK⁰ _Sπ^-ν _τ , τ^- → K⁰ _SK⁰ _Sπ^-π ⁰ν_τ , τ^- → K⁰ _SK⁰ _Lπ^-π ⁰ν_τ , τ^- → K̄⁰π^-π⁰π⁰ν _τ, τ^-→K⁰K^-π⁰π ⁰ν_τ and τ^-→K⁰h⁺h^-h ^-ν_τ are also investigated. In addition, mass spectra in the K⁰ _Sh^- and K⁰ _Sh^-π⁰ final states are analysed to provide information on the intermediate states produced in the decays.

langue originale	Anglais
Pages (de - à)	29-45
Nombre de pages	17
journal	European Physical Journal C
Volume	4
Numéro de publication	1
Les DOIs	https://doi.org/10.1007/s100529800879
état	Publié - 1 janv. 1998

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10.1007/s100529800879

Contient cette citation

@article{04187bb792e749a097e71f530f000a64,

title = "K0 S production in τ decays",

abstract = "From a sample of about 160k Z → τ+τ- candidates collected with the ALEPH detector at LEP between 1991 and 1995, τ lepton decays involving K0 S → π+π- are studied. The K0 SK0 L associated production in τ decays is also investigated. The branching ratios are measured for the inclusive decay B(τ-→K0 SX-ν τ) = (9.70±0.58±0.62) {\texttimes} 10-3, where X- can be anything, and for the exclusive decays B(τ-→{\=K}0π-ν τ) = (8.55±1.17±0.66) {\texttimes} 10-3, B(τ-→{\=K}0π-π 0ντ) = (2.94±0.73±0.37) {\texttimes} 10-3, B(τ-→{\=K}0K-ντ) = (1.58±0.42±0.17) {\texttimes} 10-3, B(τ-→{\=K}0K-π 0ντ) = (1.52±0.76±0.21) {\texttimes} 10-3. The decay τ-→K0 SK0 Lπ-ντ is studied for the first time, giving a branching ratio B(τ-→K0 SK0 Lπ-ντ) = (1.01±0.23±0.13) {\texttimes} 10-3. The channels τ- → K0 SK0 Sπ-ν τ , τ- → K0 SK0 Sπ-π 0ντ , τ- → K0 SK0 Lπ-π 0ντ , τ- → {\=K}0π-π0π0ν τ, τ-→K0K-π0π 0ντ and τ-→K0h+h-h -ντ are also investigated. In addition, mass spectra in the K0 Sh- and K0 Sh-π0 final states are analysed to provide information on the intermediate states produced in the decays.",

author = "\{The ALEPH Collaboration\} and R. Barate and D. Buskulic and D. Decamp and P. Ghez and C. Goy and Lees, \{J. P.\} and A. Lucotte and Minard, \{M. N.\} and Nief, \{J. Y.\} and B. Pietrzyk and G. Boix and Casado, \{M. P.\} and M. Chmeissani and Crespo, \{J. M.\} and M. Delfino and E. Fernandez and M. Fernandez-Bosman and Ll Garrido and E. Graug{\'e}s and A. Juste and M. Martinez and G. Merino and R. Miquel and Mir, \{L. M.\} and Park, \{I. C.\} and A. Pascual and Perlas, \{J. A.\} and I. Riu and F. Sanchez and A. Colaleo and D. Creanza and \{de Palma\}, M. and G. Gelao and G. Iaselli and G. Maggi and M. Maggi and S. Nuzzo and A. Ranieri and G. Raso and F. Ruggieri and G. Selvaggi and L. Silvestris and P. Tempesta and A. Tricomi and G. Zito and X. Huang and J. Lin and Q. Ouyang and T. Wang and M. Verderi",

year = "1998",

month = jan,

day = "1",

doi = "10.1007/s100529800879",

language = "English",

volume = "4",

pages = "29--45",

journal = "European Physical Journal C",

issn = "1434-6044",

publisher = "Springer Nature",

number = "1",

}

TY - JOUR

T1 - K0 S production in τ decays

AU - The ALEPH Collaboration

AU - Barate, R.

AU - Buskulic, D.

AU - Decamp, D.

AU - Ghez, P.

AU - Goy, C.

AU - Lees, J. P.

AU - Lucotte, A.

AU - Minard, M. N.

AU - Nief, J. Y.

AU - Pietrzyk, B.

AU - Boix, G.

AU - Casado, M. P.

AU - Chmeissani, M.

AU - Crespo, J. M.

AU - Delfino, M.

AU - Fernandez, E.

AU - Fernandez-Bosman, M.

AU - Garrido, Ll

AU - Graugés, E.

AU - Juste, A.

AU - Martinez, M.

AU - Merino, G.

AU - Miquel, R.

AU - Mir, L. M.

AU - Park, I. C.

AU - Pascual, A.

AU - Perlas, J. A.

AU - Riu, I.

AU - Sanchez, F.

AU - Colaleo, A.

AU - Creanza, D.

AU - de Palma, M.

AU - Gelao, G.

AU - Iaselli, G.

AU - Maggi, G.

AU - Maggi, M.

AU - Nuzzo, S.

AU - Ranieri, A.

AU - Raso, G.

AU - Ruggieri, F.

AU - Selvaggi, G.

AU - Silvestris, L.

AU - Tempesta, P.

AU - Tricomi, A.

AU - Zito, G.

AU - Huang, X.

AU - Lin, J.

AU - Ouyang, Q.

AU - Wang, T.

AU - Verderi, M.

PY - 1998/1/1

Y1 - 1998/1/1

N2 - From a sample of about 160k Z → τ+τ- candidates collected with the ALEPH detector at LEP between 1991 and 1995, τ lepton decays involving K0 S → π+π- are studied. The K0 SK0 L associated production in τ decays is also investigated. The branching ratios are measured for the inclusive decay B(τ-→K0 SX-ν τ) = (9.70±0.58±0.62) × 10-3, where X- can be anything, and for the exclusive decays B(τ-→K̄0π-ν τ) = (8.55±1.17±0.66) × 10-3, B(τ-→K̄0π-π 0ντ) = (2.94±0.73±0.37) × 10-3, B(τ-→K̄0K-ντ) = (1.58±0.42±0.17) × 10-3, B(τ-→K̄0K-π 0ντ) = (1.52±0.76±0.21) × 10-3. The decay τ-→K0 SK0 Lπ-ντ is studied for the first time, giving a branching ratio B(τ-→K0 SK0 Lπ-ντ) = (1.01±0.23±0.13) × 10-3. The channels τ- → K0 SK0 Sπ-ν τ , τ- → K0 SK0 Sπ-π 0ντ , τ- → K0 SK0 Lπ-π 0ντ , τ- → K̄0π-π0π0ν τ, τ-→K0K-π0π 0ντ and τ-→K0h+h-h -ντ are also investigated. In addition, mass spectra in the K0 Sh- and K0 Sh-π0 final states are analysed to provide information on the intermediate states produced in the decays.

AB - From a sample of about 160k Z → τ+τ- candidates collected with the ALEPH detector at LEP between 1991 and 1995, τ lepton decays involving K0 S → π+π- are studied. The K0 SK0 L associated production in τ decays is also investigated. The branching ratios are measured for the inclusive decay B(τ-→K0 SX-ν τ) = (9.70±0.58±0.62) × 10-3, where X- can be anything, and for the exclusive decays B(τ-→K̄0π-ν τ) = (8.55±1.17±0.66) × 10-3, B(τ-→K̄0π-π 0ντ) = (2.94±0.73±0.37) × 10-3, B(τ-→K̄0K-ντ) = (1.58±0.42±0.17) × 10-3, B(τ-→K̄0K-π 0ντ) = (1.52±0.76±0.21) × 10-3. The decay τ-→K0 SK0 Lπ-ντ is studied for the first time, giving a branching ratio B(τ-→K0 SK0 Lπ-ντ) = (1.01±0.23±0.13) × 10-3. The channels τ- → K0 SK0 Sπ-ν τ , τ- → K0 SK0 Sπ-π 0ντ , τ- → K0 SK0 Lπ-π 0ντ , τ- → K̄0π-π0π0ν τ, τ-→K0K-π0π 0ντ and τ-→K0h+h-h -ντ are also investigated. In addition, mass spectra in the K0 Sh- and K0 Sh-π0 final states are analysed to provide information on the intermediate states produced in the decays.

U2 - 10.1007/s100529800879

DO - 10.1007/s100529800879

M3 - Article

AN - SCOPUS:0032417385

SN - 1434-6044

VL - 4

SP - 29

EP - 45

JO - European Physical Journal C

JF - European Physical Journal C

IS - 1

ER -

K0 S production in τ decays

Résumé

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K⁰ _S production in τ decays