Evidence of a new narrow resonance decaying to χ(c1)γ in B→χ(c1)γK.

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Abstrakt

Tytuł:: Evidence of a new narrow resonance decaying to χ(c1)γ in B→χ(c1)γK.
Autorzy:: Bhardwaj V; Nara Women's University, Nara 630-8506.
Miyabayashi K
Adachi I
Aihara H
Asner DM
Aulchenko V
Aushev T
Aziz T
Bakich AM
Bala A
Bhuyan B
Bischofberger M
Bondar A
Bonvicini G
Bozek A
Bračko M
Brodzicka J
Browder TE
Chekelian V
Chen A
Cheon BG
Chilikin K
Chistov R
Cho K
Chobanova V
Choi SK
Choi Y
Cinabro D
Dalseno J
Danilov M
Doležal Z
Drásal Z
Drutskoy A
Dutta D
Dutta K
Eidelman S
Epifanov D
Farhat H
Fast JE
Ferber T
Frey A
Gaur V
Gabyshev N
Ganguly S
Gillard R
Goh YM
Golob B
Haba J
Hara T
Hayashii H
Horii Y
Hoshi Y
Hou WS
Hsiung YB
Hyun HJ
Iijima T
Inami K
Ishikawa A
Itoh R
Iwashita T
Julius T
Kah DH
Kang JH
Kato E
Kawasaki T
Kichimi H
Kiesling C
Kim DY
Kim JB
Kim JH
Kim KT
Kim MJ
Kim YJ
Kinoshita K
Klucar J
Ko BR
Kodyš P
Korpar S
Križan P
Krokovny P
Kumar R
Kumita T
Kuzmin A
Kwon YJ
Lange JS
Lee SH
Li J
Li Y
Liu C
Liu ZQ
Liventsev D
Lukin P
Matvienko D
Miyata H
Mizuk R
Mohanty GB
Moll A
Mussa R
Nakano E
Nakao M
Natkaniec Z
Nayak M
Nedelkovska E
Nisar NK
Nishida S
Nitoh O
Ogawa S
Okuno S
Olsen SL
Pakhlov P
Pakhlova G
Panzenböck E
Park H
Park HK
Pedlar TK
Pestotnik R
Petrič M
Piilonen LE
Ritter M
Röhrken M
Rostomyan A
Sahoo H
Saito T
Sakai K
Sakai Y
Sandilya S
Santel D
Santelj L
Sanuki T
Sato Y
Savinov V
Schneider O
Schnell G
Schwanda C
Seidl R
Semmler D
Senyo K
Seon O
Sevior ME
Shapkin M
Shen CP
Shibata TA
Shiu JG
Shwartz B
Simon F
Singh JB
Smerkol P
Sohn YS
Sokolov A
Solovieva E
Starič M
Steder M
Sumihama M
Sumiyoshi T
Tamponi U
Tanida K
Tatishvili G
Teramoto Y
Trabelsi K
Tsuboyama T
Uchida M
Uehara S
Uglov T
Unno Y
Urquijo P
Usov Y
Vahsen SE
Van Hulse C
Vanhoefer P
Varner G
Varvell KE
Vinokurova A
Wagner MN
Wang CH
Wang MZ
Wang P
Watanabe M
Watanabe Y
Won E
Yabsley BD
Yamaoka J
Yamashita Y
Yashchenko S
Yook Y
Yuan CZ
Zhang CC
Zhang ZP
Zhilich V
Zhulanov V
Zupanc A
Corporate Authors:: Belle Collaboration
Źródło:: Physical review letters [Phys Rev Lett] 2013 Jul 19; Vol. 111 (3), pp. 032001. Date of Electronic Publication: 2013 Jul 16.
Typ publikacji:: Journal Article
Język:: English
Imprint Name(s):: Original Publication: New York : American Physical Society
Entry Date(s):: Date Created: 20130806 Date Completed: 20131101 Latest Revision: 20130805
Update Code:: 20240104
DOI:: 10.1103/PhysRevLett.111.032001
PMID:: 23909309
: Czasopismo naukowe

We report measurements of B→χ(c1)γK and χ(c2)γK decays using 772×10(6) BB[over ¯] events collected at the Υ(4S) resonance with the Belle detector at the KEKB asymmetric-energy e(+)e(-) collider. Evidence of a new resonance in the χ(c1)γ final state is found with a statistical significance of 3.8σ. This state has a mass of 3823.1±1.8(stat)±0.7(syst) MeV/c(2), a value that is consistent with theoretical expectations for the previously unseen 1(3)D(2) cc[over ¯] meson. We find no other narrow resonance and set upper limits on the branching fractions of the X(3872)→χ(c1)γ and χ(c2)γ decays.

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