Back to Search Start Over

Measurement of the τ-lepton lifetime at Belle.

Authors :
Belous K
Shapkin M
Sokolov A
Adachi I
Aihara H
Asner DM
Aulchenko V
Bakich AM
Bala A
Bhuyan B
Bobrov A
Bondar A
Bonvicini G
Bozek A
Bračko M
Browder TE
Červenkov D
Chekelian V
Chen A
Cheon BG
Chilikin K
Chistov R
Cho K
Chobanova V
Choi Y
Cinabro D
Dalseno J
Doležal Z
Dutta D
Eidelman S
Epifanov D
Farhat H
Fast JE
Ferber T
Gaur V
Ganguly S
Garmash A
Gillard R
Goh YM
Golob B
Haba J
Hara T
Hayasaka K
Hayashii H
Hoshi Y
Hou WS
Iijima T
Inami K
Ishikawa A
Itoh R
Iwashita T
Jaegle I
Julius T
Kato E
Kichimi H
Kiesling C
Kim DY
Kim HJ
Kim JB
Kim MJ
Kim YJ
Kinoshita K
Ko BR
Kodyš P
Korpar S
Križan P
Krokovny P
Kuhr T
Kuzmin A
Kwon YJ
Lange JS
Lee SH
Libby J
Liventsev D
Lukin P
Matvienko D
Miyata H
Mizuk R
Mohanty GB
Mori T
Mussa R
Nagasaka Y
Nakano E
Nakao M
Nayak M
Nedelkovska E
Ng C
Nisar NK
Nishida S
Nitoh O
Ogawa S
Okuno S
Olsen SL
Ostrowicz W
Pakhlova G
Park CW
Park H
Park HK
Pedlar TK
Pestotnik R
Petrič M
Piilonen LE
Ritter M
Röhrken M
Rostomyan A
Ryu S
Sahoo H
Saito T
Sakai Y
Sandilya S
Santel D
Santelj L
Sanuki T
Savinov V
Schneider O
Schnell G
Schwanda C
Semmler D
Senyo K
Seon O
Shebalin V
Shen CP
Shibata TA
Shiu JG
Shwartz B
Sibidanov A
Simon F
Sohn YS
Stanič S
Starič M
Steder M
Sumiyoshi T
Tamponi U
Tatishvili G
Teramoto Y
Trabelsi K
Tsuboyama T
Uchida M
Uehara S
Uglov T
Unno Y
Uno S
Usov Y
Vahsen SE
Van Hulse C
Vanhoefer P
Varner G
Varvell KE
Vinokurova A
Vorobyev V
Wagner MN
Wang CH
Wang P
Watanabe M
Watanabe Y
Williams KM
Won E
Yamaoka J
Yamashita Y
Yashchenko S
Yook Y
Yuan CZ
Zhang ZP
Zhilich V
Zupanc A
Source :
Physical review letters [Phys Rev Lett] 2014 Jan 24; Vol. 112 (3), pp. 031801. Date of Electronic Publication: 2014 Jan 23.
Publication Year :
2014

Abstract

The lifetime of the τ lepton is measured using the process e+ e- → τ+ τ- , where both τ leptons decay to 3πν(τ). The result for the mean lifetime, based on 711  fb(-1) of data collected with the Belle detector at the ϒ(4S) resonance and 60  MeV below, is τ=(290.17±0.53(stat)±0.33(syst))×10(-15)  s. The first measurement of the lifetime difference between τ+ and τ- is performed. The upper limit on the relative lifetime difference between positive and negative τ leptons is |Δτ|/τ<7.0×10(-3) at 90% C.L.

Details

Language :
English
ISSN :
1079-7114
Volume :
112
Issue :
3
Database :
MEDLINE
Journal :
Physical review letters
Publication Type :
Academic Journal
Accession number :
24484129
Full Text :
https://doi.org/10.1103/PhysRevLett.112.031801