One-prong τ decays with kaons

被引：0

作者：

Barate, R ^{[1
]}

Decamp, D

Ghez, P

Goy, C

Lees, JP

Merle, E

Minard, MN

Pietrzyk, B

Alemany, R

Casado, MP

Chmeissani, M

Crespo, JM

Fernandez, E

Fernandez-Bosman, M

Garrido, L

Graugès, E

Juste, A

Martinez, M

Merino, G

Miquel, R

Mir, LM

Pacheco, A

Park, IC

Riu, I

Colaleo, A

Creanza, D

de Palma, M

Gelao, G

Iaselli, G

Maggi, G

Maggi, M

Nuzzo, S

Ranieri, A

Raso, G

Ruggieri, F

Selvaggi, G

Silvestris, L

Tempesta, P

Tricomi, A

Zito, G

Huang, X

Lin, J

Ouyang, Q

Wang, T

Xie, Y

Xu, R

Xue, S

Zhang, J

Zhang, L

Zhao, W

机构：

[1] Phys Particules Lab, CNRS, IN2P3, F-74019 Annecy Le Vieux, France

[2] Univ Autonoma Barcelona, Inst Fis Altes Energies, E-08193 Barcelona, Spain

[3] Ist Nazl Fis Nucl, Dipartimento Fis, Sez Bari, I-70126 Bari, Italy

[4] Acad Sinica, Inst High Energy Phys, Beijing, Peoples R China

[5] CERN, European Lab Particle Phys, CH-1211 Geneva 23, Switzerland

[6] Univ Blaise Pascal, Phys Corpusculaire Lab, CNRS, IN2P3, F-63177 Clermont Ferrand, Aubiere, France

[7] Niels Bohr Inst, DK-2100 Copenhagen, Denmark

[8] Democritos Nucl Res Ctr, GR-15310 Athens, Greece

[9] Ecole Polytech, Lab Phys Nucl & Hautes Energies, CNRS, IN2P3, F-91128 Palaiseau, France

[10] Univ Florence, Dipartimento Fis, Ist Nazl Fis Nucl, Sez Firenze, I-50125 Florence, Italy

[11] Florida State Univ, Supercomp Computat Res Inst, Tallahassee, FL 32306 USA

[12] Ist Nazl Fis Nucl, Lab Nazl Frascati, I-00044 Frascati, Italy

[13] Univ Glasgow, Dept Phys & Astron, Glasgow G12 8QQ, Lanark, Scotland

[14] Heidelberg Univ, Inst Hochenergiephys, D-69120 Heidelberg, Germany

[15] Univ London Imperial Coll Sci Technol & Med, Dept Phys, London SW7 2BZ, England

[16] Univ Innsbruck, Inst Expt Phys, A-6020 Innsbruck, Austria

[17] Univ Lancaster, Dept Phys, Lancaster LA1 4YB, England

[18] Johannes Gutenberg Univ Mainz, Inst Phys, D-55099 Mainz, Germany

[19] Fac Sci Luminy, Ctr Phys Particules, CNRS, IN2P3, F-13288 Marseille, France

[20] Univ Milan, Dipartimento Fis, I-20133 Milan, Italy

[21] Ist Nazl Fis Nucl, Sz Milano, I-20133 Milan, Italy

[22] Max Planck Inst Phys & Astrophys, Werner Heisenberg Inst Phys, D-80805 Munich, Germany

[23] Univ Paris 11, Lab Accelerateur Lineaire, CNRS, IN2P3, F-91898 Orsay, France

[24] Univ Pisa, Dipartimento Fis, Ist Nazl Fis Nucl, Sez Pisa, I-56010 Pisa, Italy

[25] Scuola Normale Super Pisa, I-56010 Pisa, Italy

[26] Univ London Royal Holloway & Bedford New Coll, Dept Phys, Egham TW20 0EX, Surrey, England

[27] Rutherford Appleton Lab, Particle Phys Dept, Didcot OX11 0QX, Oxon, England

[28] Ctr Etud Saclay, Serv Phys Particules, DAPNIA, CEA, F-91191 Gif Sur Yvette, France

[29] Univ Calif Santa Cruz, Inst Particle Phys, Santa Cruz, CA 95064 USA

[30] Univ Sheffield, Dept Phys, Sheffield S3 7RH, S Yorkshire, England

[31] Univ Siegen, Fachbereich Phys, D-57068 Siegen, Germany

[32] Univ Trieste, Dipartimento Fis, I-34127 Trieste, Italy

[33] Ist Nazl Fis Nucl, Sez Trieste, I-34127 Trieste, Italy

[34] Univ Washington, Seattle, WA 98195 USA

[35] Univ Wisconsin, Dept Phys, Madison, WI 53706 USA

[36] Ist Nazl Fis Nucl, Dipartimento Fis, Sez Catania, I-95129 Catania, Italy

[37] Univ Turin, Ist Fis Gen, I-10125 Turin, Italy

[38] CNR, Ist Cosmogeofis, I-10133 Turin, Italy

[39] Kangnung Natl Univ, Kangnung, South Korea

[40] Univ Barcelona, Barcelona 08208, Spain

来源：

EUROPEAN PHYSICAL JOURNAL C | 1999年 / 10卷 / 01期

关键词：

D O I：

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中图分类号：

O412 [相对论、场论]; O572.2 [粒子物理学];

学科分类号：

摘要：

One-prong tau decays into final states involving kaons are studied with about 161000 tau(+) tau(-) events collected by the ALEPH detector from 1991 to 1995. Charged kaons are identified by dE/dx measurement, while K-L(0)'s are detected through their interaction in calorimeters. Branching ratios are measured for the inclusive mode, B (tau(-) --> K-X nu(tau)) = (1.52 +/- 0.04 +/- 0 04)%, where X can be any system of neutral particles, and for the exclusive modes B(tau(-) --> K(-)nu(tau)) = (6.96 +/- 0.25 +/- 0.14) x 10(-3), B(tau(-) --> K(-)pi(0)nu(tau)) =(4.44 +/- 0.26 +/- 0.24) x 10(-3), B(tau(-) --> K(-)pi(0)pi(0)nu(tau)) = (0.56 +/- 0.20 +/- 0.15) x 10(-3), B(tau(-) --> K(-)pi(0)pi(0)pi(0)nu(tau)) = (0.37 +/- 0.21 +/- 0.11) x 10(-3), B(tau(-) --> K(-)K(0)nu(tau)) = (1.62 +/- 0.21 +/- 0.11) x 10(-3), B(tau(-) --> K-K(0)pi(0)nu(tau)) = 1.43 +/- 0.25 +/- 0.15) x 10(-3), B(tau(-) --> <(K-0)over bar>pi(-)nu tau) = (9.28 +/- 0.45 +/- 0.34) x 10(-3), B(tau(-) --> <(K-0)over bar>pi(-)nu(tau)) = (3..47 +/- 0.53 +/- 0.37) x 10(-3), where the first error is statistical and the second is systematical. Upper limits for B(tau(-) --> K(0)pi(-)pi(0)pi(0)nu(tau)) and B(tau(-) --> K(-)K(0)pi(0)pi(0)nu(tau)) are also obtained. Mass spectra in the final states are investigated in order to study the relevant dynamics.

引用

页码：1 / 18

页数：18

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