MEASUREMENT OF EXCLUSIVE BRANCHING FRACTIONS OF HADRONIC ONE-PRONG TAU-DECAYS

被引：18

作者：

ACCIARRI, M

ADAM, A

ADRIANI, O

AGUILARBENITEZ, M

AHLEN, S

ALCARAZ, J

ALOISIO, A

ALVERSON, G

ALVIGGI, MG

AMBROSI, G

AN, Q

ANDERHUB, H

ANDERSON, AL

ANDREEV, VP

ANGELESCU, T

ANTONOV, L

ANTREASYAN, D

ALKHAZOV, G

ARCE, P

AREFIEV, A

AZEMOON, T

AZIZ, T

BABA, PVKS

BAGNAIA, P

BAKKEN, JA

BAKSAY, L

BALL, RC

BANERJEE, S

BANICZ, K

BARILLERE, R

BARONE, L

BASCHIROTTO, A

BASILE, M

BATTISTON, R

BAY, A

BECATTINI, F

BECKER, U

BEHNER, F

BENCZE, GL

BERDUGO, J

BERGES, P

BERTUCCI, B

BETEV, BL

BIASINI, M

BILAND, A

BILEI, GM

BIZZARRI, R

BLAISING, JJ

BOBBINK, GJ

BOCK, R

机构：

[1] RHEIN WESTFAL TH AACHEN, INST PHYS 3, D-52056 AACHEN, GERMANY

[2] NIKHEF, NATL INST HIGH ENERGY PHYS, 1009 DB AMSTERDAM, NETHERLANDS

[3] UNIV MICHIGAN, ANN ARBOR, MI 48109 USA

[4] LAB ANNECY LE VIEUX PHYS PARTICULES, IN2P3, CNRS, F-74941 ANNECY LE VIEUX, FRANCE

[5] JOHNS HOPKINS UNIV, BALTIMORE, MD 21218 USA

[6] INST HIGH ENERGY PHYS, BEIJING 100039, PEOPLES R CHINA

[7] HUMBOLDT UNIV BERLIN, D-10099 BERLIN, GERMANY

[8] IST NAZL FIS NUCL, I-40126 BOLOGNA, ITALY

[9] TATA INST FUNDAMENTAL RES, BOMBAY 400005, MAHARASHTRA, INDIA

[10] BOSTON UNIV, BOSTON, MA 02215 USA

[11] NORTHEASTERN UNIV, BOSTON, MA 02215 USA

[12] INST ATOM PHYS, R-76900 BUCHAREST, ROMANIA

[13] UNIV BUCHAREST, R-76900 BUCHAREST, ROMANIA

[14] HUNGARIAN ACAD SCI, CENT RES INST PHYS, H-1525 BUDAPEST 114, HUNGARY

[15] HARVARD UNIV, CAMBRIDGE, MA 02139 USA

[16] MIT, CAMBRIDGE, MA 02139 USA

[17] IST NAZL FIS NUCL, I-50125 FLORENCE, ITALY

[18] UNIV FLORENCE, I-50125 FLORENCE, ITALY

[19] CERN, EUROPEAN LAB PARTICLE PHYS, CH-1211 GENEVA 23, SWITZERLAND

[20] WORLD LAB, FBLJA PROJECT, CH-1211 GENEVA 23, SWITZERLAND

[21] UNIV GENEVA, CH-1211 GENEVA 4, SWITZERLAND

[22] UNIV SCI & TECHNOL CHINA, HEFEI 230029, PEOPLES R CHINA

[23] SEFT, HIGH ENERGY PHYS RES INST, SF-00014 HELSINKI, FINLAND

[24] UNIV LAUSANNE, CH-1015 LAUSANNE, SWITZERLAND

[25] UNIV ALABAMA, TUSCALOOSA, AL 35486 USA

[26] PURDUE UNIV, W LAFAYETTE, IN 47907 USA

[27] PAUL SCHERRER INST, CH-5232 VILLIGEN, SWITZERLAND

[28] DESY, INST HOCHENERGIEPHYS, D-15738 ZEUTHEN, GERMANY

[29] ETH ZURICH, CH-8093 ZURICH, SWITZERLAND

[30] UNIV HAMBURG, D-22761 HAMBURG, GERMANY

[31] HIGH ENERGY PHYS GRP, TAIPEI, TAIWAN

[32] RHEIN WESTFAL TH AACHEN, INST PHYS 1, D-52056 AACHEN, GERMANY

[33] LOS ALAMOS NATL LAB, LOS ALAMOS, NM 87544 USA

[34] UNIV LYON 1, INST PHYS NUCL LYON, IN2P3, CNRS, F-69622 VILLEURBANNE, FRANCE

[35] CIEMAT, E-28040 MADRID, SPAIN

[36] INST THEORET & EXPTL PHYS, MOSCOW, RUSSIA

[37] IST NAZL FIS NUCL, I-80125 NAPLES, ITALY

[38] UNIV NAPLES, I-80125 NAPLES, ITALY

[39] UNIV CYPRUS, DEPT NAT SCI, NICOSIA, CYPRUS

[40] UNIV NIJMEGEN, 6525 ED NIJMEGEN, NETHERLANDS

[41] NATL INST NUCL PHYS & HIGH ENERGY PHYS, 6525 ED NIJMEGEN, NETHERLANDS

[42] OAK RIDGE NATL LAB, OAK RIDGE, TN 37831 USA

[43] CALTECH, PASADENA, CA 91125 USA

[44] IST NAZL FIS NUCL, I-06100 PERUGIA, ITALY

[45] UNIV PERUGIA, I-06100 PERUGIA, ITALY

[46] CARNEGIE MELLON UNIV, PITTSBURGH, PA 15213 USA

[47] PRINCETON UNIV, PRINCETON, NJ 08544 USA

[48] IST NAZL FIS NUCL, I-00185 ROME, ITALY

[49] UNIV ROMA LA SAPIENZA, I-00185 ROME, ITALY

[50] LENINGRAD NUCL PHYS INST, ST PETERSBURG, RUSSIA

来源：

PHYSICS LETTERS B | 1995年 / 345卷 / 01期

关键词：

D O I：

10.1016/0370-2693(94)01587-3

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We have measured the branching fractions for the hadronic tau decays, tau --> pi/K n pi(degrees) upsilon (0 less than or equal to n less than or equal to 3), with the L3 detector at LEP. Multiphoton final states are analyzed using the fine-grained, high-resolution electromagnetic calorimeter. The decay channels are identified using a neural network method. The results are: BR(tau --> pi/K upsilon) = (11.82 +/- 0.26 +/- 0.43)%, BR(tau --> pi/K pi(degrees) upsilon) = (25.05 +/- 0.35 +/- 0.50)%, BR(tau --> pi/K2 pi(degrees) upsilon) = (8.88 +/- 0.37 +/- 0.42)%, BR(tau --> pi/K3 pi(degrees) upsilon) = (1.70 +/- 0.24 +/- 0.38)%, where the first error quoted is statistical, the second systematic.

引用

页码：93 / 102

页数：10

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