Observation of ω → π0 μ+μ− decay

Dzhelyadin, R.; Golovkin, S.V.; Gritsuk, M.V.; Kakauridze, D.B.; Kachanov, V.A.; Konoplyannikov, A.; Константинов, А. С.; Константинов, В.Ф.; Kubarovski, V.P.; Kulik, A.V.; Landsberg, L.G.; Leontiev, V. M.; Mukhin, V.A.; Obraztsov, V.; Petrunina, T.I.; Pokrovski, N.S.; Prokoshkin, Yu.D.; Victorov, V.A.; Zaǐtsev, A. M.

doi:10.1016/0370-2693(79)90669-5

Cited by 13 publications

(15 citation statements)

References 3 publications

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“…Contrary to the transition FF of vector meson production [18], the η meson FF, computed within such an approach, exhibits a rather good agreement with previous data [5,20,21,22].…”

Section: Dalitz Decay and Transition Form Factorsupporting

confidence: 59%

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Di-electrons from η -meson Dalitz decay in proton-proton collisions

Kaptari

Kämpfer

2007

Eur. Phys. J. A

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The reaction pp → ppη → ppγe + e − is discussed within a covariant effective meson-nucleon theory. The model is adjusted to data of the subreaction pp → ppη. Our focus is on di-electrons from Dalitz decays of η mesons, η → γγ * → γe + e − , and the role of the corresponding transition form factor F ηγγ * . Numerical results are presented for the intermediate energy kinematics of HADES experiments.

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“…Contrary to the transition FF of vector meson production [18], the η meson FF, computed within such an approach, exhibits a rather good agreement with previous data [5,20,21,22].…”

Section: Dalitz Decay and Transition Form Factorsupporting

confidence: 59%

“…Hence, eq. (2.4) evidences that by measuring the invariant mass distribution one can get direct experimental access to the transition FF [5,20,21,22]. For a on-mass shell η meson, the value of the di-electron mass s γ * is kinematically restricted by s γ * ≤ m 2 η .…”

Section: Dalitz Decay and Transition Form Factormentioning

confidence: 96%

Di-electrons from η -meson Dalitz decay in proton-proton collisions

Kaptari

Kämpfer

2007

Eur. Phys. J. A

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“…In such a way one can extract the transition FF in the same manner as in [28][29][30][31]: Define the quantity 5) while the solid line is the result for a nonlocal, pole-like structure of the ω meson FF with effective (freely adjustable) constants. As seen from eq.…”

Section: Resultsmentioning

confidence: 99%

ω- πγtransition form factor in proton-proton collisions

Kaptari

Kämpfer

2007

Eur. Phys. J. A

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Dalitz decays of ω and ρ mesons, ω → π 0 γ * → π 0 e + e − and ρ 0 → π 0 γ * → π 0 e + e − , produced in pp collisions are calculated within a covariant effective meson-nucleon theory. We argue that the ω transition form factor F ω→π 0 γ * is experimentally accessible in a fairly model independent way in the reaction pp → ppπ 0 e + e − for invariant masses of the π 0 e + e − subsystem near the

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“…It is worth noting that modes with µ + µ − in the final state are more convenient for studies of the transition form factor |F V P (q 2 )| [13]. Unfortunately, their study at CMD-2 is complicated because of the large background coming from the dominant decay mode of the ω meson: ω → π + π − π 0 and insufficiently powerful µ/π separation at low momenta.…”

Section: Study Of the ωπ Transition Form Factormentioning

confidence: 99%

“…Various conversion decays of the φ meson were studied at CMD-2 [8,9] and SND [10,11]. For the ρ and ω mesons experimental information is rather scarce: only the branching fractions for the decays ω → π 0 e + e − and ω → π 0 µ + µ − were measured in experiments at ND [12] and Lepton-G [13] with an accuracy ∼ 30%.…”

Section: Introductionmentioning

confidence: 99%