Research output: Contribution to journal › Article › peer-review
Search for direct production of the f1(1285) resonance in e+e− collisions. / Achasov, M. N.; Barnyakov, A. Yu; Beloborodov, K. I. et al.
In: Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, Vol. 800, 135074, 10.01.2020.Research output: Contribution to journal › Article › peer-review
}
TY - JOUR
T1 - Search for direct production of the f1(1285) resonance in e+e− collisions
AU - Achasov, M. N.
AU - Barnyakov, A. Yu
AU - Beloborodov, K. I.
AU - Berdyugin, A. V.
AU - Berkaev, D. E.
AU - Bogdanchikov, A. G.
AU - Botov, A. A.
AU - Dimova, T. V.
AU - Druzhinin, V. P.
AU - Golubev, V. B.
AU - Kardapoltsev, L. V.
AU - Kasaev, A. S.
AU - Kharlamov, A. G.
AU - Koop, I. A.
AU - Korol, A. A.
AU - Kovrizhin, D. P.
AU - Koshuba, S. V.
AU - Kupich, A. S.
AU - Litvinov, R. A.
AU - Lysenko, A. P.
AU - Martin, K. A.
AU - Melnikova, N. A.
AU - Muchnoi, N. Yu
AU - Obrazovsky, A. E.
AU - Pakhtusova, E. V.
AU - Perevedentsev, E. A.
AU - Pugachev, K. V.
AU - Serednyakov, S. I.
AU - Silagadze, Z. K.
AU - Shatunov, P. Yu
AU - Shatunov, Yu M.
AU - Shtol, D. A.
AU - Shwartz, D. B.
AU - Surin, I. K.
AU - Usov, Yu V.
AU - Zemlyansky, I. M.
AU - Zhabin, V. N.
AU - Zhulanov, V. V.
PY - 2020/1/10
Y1 - 2020/1/10
N2 - A search for direct production of the f1(1285) resonance in e+e− annihilation is performed with the SND detector at the VEPP-2000 e+e− collider. The analysis is based on data with an integrated luminosity of 15.1 pb−1 accumulated in the center-of-mass energy range 1.2–1.4 GeV. Two e+e−→f1(1285) candidate events are found at the peak of the resonance and zero events beyond the resonance. The significance of the e+e−→f1(1285) signal is 2.5σ. The cross section at the maximum of the resonance is found to be σ(e+e−→f1)=45−24 +33 pb. The corresponding branching fraction B(f1(1285)→e+e−)=(5.1−2.7 +3.7)×10−9. We consider this result as a first indication of the process e+e−→f1(1285). The measured branching fraction is consistent with the theoretical prediction.
AB - A search for direct production of the f1(1285) resonance in e+e− annihilation is performed with the SND detector at the VEPP-2000 e+e− collider. The analysis is based on data with an integrated luminosity of 15.1 pb−1 accumulated in the center-of-mass energy range 1.2–1.4 GeV. Two e+e−→f1(1285) candidate events are found at the peak of the resonance and zero events beyond the resonance. The significance of the e+e−→f1(1285) signal is 2.5σ. The cross section at the maximum of the resonance is found to be σ(e+e−→f1)=45−24 +33 pb. The corresponding branching fraction B(f1(1285)→e+e−)=(5.1−2.7 +3.7)×10−9. We consider this result as a first indication of the process e+e−→f1(1285). The measured branching fraction is consistent with the theoretical prediction.
KW - SND
KW - MESONS
KW - SYSTEM
UR - http://www.scopus.com/inward/record.url?scp=85074728193&partnerID=8YFLogxK
U2 - 10.1016/j.physletb.2019.135074
DO - 10.1016/j.physletb.2019.135074
M3 - Article
AN - SCOPUS:85074728193
VL - 800
JO - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
JF - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
SN - 0370-2693
M1 - 135074
ER -
ID: 22334318