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Toplam kayıt 362, listelenen: 61-70
Polarization and entanglement in baryon–antibaryon pair production in electron–positron annihilation
(Nature Publishing Group, 2019)
Particles directly produced at electron–positron colliders, such as the J/? meson, decay with relatively high probability into a baryon–antibaryon pair1. For spin-1/2 baryons, the pair can have the same or opposite helicites. ...
Observation of OZI-suppressed decays chi(cJ) -> omega phi
(Amer Physic Soc., 2019)
Decays chi(cJ)(J = 0, 1, 2) -> omega phi are studied using (448.1 +/- 2.9) x 10(6)psi(3686) events collected with the BESIII detector in 2009 and 2012. In addition to the previously established chi(c0) -> omega phi, the ...
Search for invisible decays of omega and phi with J/psi data at BESIII
(Amer Physical Soc., 2018)
Using a data sample of (1310.6 +/- 7.0) x 10(6) J/psi events collected with the BESIII detector operating at the BEPCII collider, we perform the first experimental search for invisible decays of a light vector meson (V = ...
Damping properties of open pore aluminum foams produced by vacuum casting and nacl dissolution process
(Elsevier, 2013)
In this study,damping ratios of 3 samples made of aluminum foam material, which have different-density pores, were calculated, the effects pore density on damping were examined. Experimental modal analysis method was used ...
Measurement of e(+)e(-) -> D(D)over-bar cross sections at the psi(3770) resonance
(Iop Publishing, 2018)
We report new measurements of the cross sections for the production of D (D) over bar final states at the psi(3770) resonance. Our data sample consists of an integrated luminosity of 2.93 fb(-1) of e(+)e(-) annihilation ...
Observation of D0(+) -> K-S(0)pi(0(+))eta ' and improved measurement of D-0 -> K-pi(+)eta '
(Amer Physical Soc., 2018)
By analyzing an e(+)e(-) data sample corresponding to an integrated luminosity of 2.93 fb(-1) taken at a centerof- mass energy of 3.773 GeV with the BESIII detector, we measure the branching fractions of the Cabibbofavored ...
Search for a strangeonium-like structure Z(s) decaying into phi pi and a measurement of the cross section e(+)e(-) -> phi pi pi
(Amer Physical Soc., 2019)
Using a data sample of e(+)e(-) collision data corresponding to an integrated luminosity of 108 pb(-1) collected with the BESIII detector at a center-of-mass energy of 2.125 GeV, we study the process e(+)e(-) -> phi pi pi ...
Observation of D-s(+) -> p(n)over-bar and confirmation of its large branching fraction
(Amer Physic Soc., 2019)
The baryonic decay D-s(+) -> p (n) over bar is observed, and the corresponding branching fraction is measured to be (1.21 +/- 0.10 +/- 0.05) x 10(-3), where the first uncertainty is statistical and second systematic. The ...
Measurement of the integrated Luminosities of cross-section scan data samples around the psi(3770) mass region
(Iop Publishing, 2018)
To investigate the nature of the psi(3770) resonance and to measure the cross section for e(+)e(-) -> D (D) over bar, a cross-section scan data sample, distributed among 41 center-of-mass energy points from 3.73 to 3.89 ...
Gözenekli malzemelerin sönümlemeye etkisi
(Afyon Kocatepe Üniversitesi, 2011)
Gözenekli ve gözeneksiz malzemelerin titreşim büyüklüğü araştırılmıştır. Metalik köpükler kullanılmıştır. Köpük doğal bir ürün değildir. Kapalı ve açık hücreli metalik köpükler mevcuttur. Gözenekli malzemede sönümleme ...