TY  - SER
AU  - Ablikim,M.
AU  - Ai,X.C.
AU  - Chelkov,G.A.
AU  - Achasov,M.N.
ED  - Томский государственный университет
TI  - Measurement of the form factors in the decay D+ → ωe+νe and search for the decay D+→ϕe+νe
KW  - BESIII, детектор
KW  - позитроны
KW  - электроны
KW  - статьи в журналах
N2  - Using 2.92  fb−1 of electron-positron annihilation data collected at a center-of-mass energy of s√=3.773  GeV with the BESIII detector, we present an improved measurement of the branching fraction B(D+→ωe+νe)=(1.63±0.11±0.08)×10−3. The parameters defining the corresponding hadronic form factor ratios at zero momentum transfer are determined for the first time; we measure them to be rV=1.24±0.09±0.06 and r2=1.06±0.15±0.05. The first and second uncertainties are statistical and systematic, respectively. We also search for the decay D+→ϕe+νe. An improved upper limit B(D+→ϕe+νe)<1.3×10−5 is set at 90% confidence level
UR  - http://vital.lib.tsu.ru/vital/access/manager/Repository/vtls:000534161
ER  -