Ara
Toplam kayıt 88, listelenen: 31-40
Search for a Heavy Neutral Particle Decaying to eμ, eτ, or μτ in pp Collisions at s =8 TeV with the ATLAS Detector
(Physical Review Letters, 2015)
This Letter presents a search for a heavy neutral particle decaying into an opposite-sign different-flavor dilepton pair, e±μ±, e±τ±, or μ±τ± using 20.3 fb-1 of pp collision data at s=8 TeV collected by the ATLAS detector ...
Measurement of the branching ratio Γ(Λb 0→ψ(2S)Λ0)/Γ(Λb 0→J/ψΛ0) with the ATLAS detector
(2015)
An observation of the Λb 0→ψ(2S)Λ0 decay and a comparison of its branching fraction with that of the Λb 0→J/ψΛ0 decay has been made with the ATLAS detector in proton–proton collisions at s=8 TeV at the LHC using an integrated ...
Search for heavy long-lived multi-charged particles in pp collisions at √s = 8 TeV using the ATLAS detector
(2015)
A search for heavy long-lived multi-charged particles is performed using the ATLAS detector at the LHC. Data collected in 2012 at√s = 8TeV from pp collisions corresponding to an integrated luminosity of 20.3 fb-1 are ...
Search for Scalar Charm Quark Pair Production in pp Collisions at s =8 TeV with the ATLAS Detector
(Physical Review Letters, 2015)
Observation of a Neutral Structure near theD ̄D Mass Threshold ineþe−→ðD ̄D Þ0π0atffiffisp¼4.226 and 4.257 GeV
(2015)
A neutral structure in the DD¯∗ system around the DD¯∗ mass threshold is observed with a statistical significance greater than 10σ in the processes e+e-→D+D∗-π0+c.c. and e+e-→D0D¯∗0π0+c.c. at s=4.226 and 4.257 GeV in the ...
Observation of a Neutral Charmoniumlike StateZcð4025Þ0ineþe−→ðD ̄D Þ0π
(2015)
We report a study of the process e+e-→(D∗D¯∗)0π0 using e+e- collision data samples with integrated luminosities of 1092 pb-1 at s=4.23 GeV and 826 pb-1 at s=4.26 GeV collected with the BESIII detector at the BEPCII storage ...
Observation and Spin-Parity Determination of theXð1835ÞinJ=ψ→γK0SK0Sη
(2015)
We report an observation of the processJ=ψ→γXð1835Þ→γK0SK0Sηat lowK0SK0Smass with astatistical significance larger than12.9σusing a data sample of1.31×109J=ψevents collected with theBESIII detector. In this region of phase ...
Observation of Zc(39000)0 in e+e− → π0π0J/ψ
(2015)
Using a data sample collected with the BESIII detector operating at the BEPCII storage ring, we observea new neutral stateZcð3900Þ0with a significance of10.4σ. The mass and width are measured to be3894.8 2.3 3.2MeV=c2and29.6 ...
Measurement of the absolute branching fraction for lambda(+)(c) -> lambda e(+)nu(e)
(2015)
We report the first measurement of the absolute branching fraction for Lambda(+)(c) -> Lambda e(+)nu(e). This measurement is based on 567 pb(-1) of e(+)e(-) annihilation data produced at root s = 4.599 GeV, which is just ...
Search for higgs boson pair production in the gamma gamma b(b)over-bar final state using pp collision data at root s=8 tev from the atlas detector
(2015)
Searches are performed for resonant and nonresonant Higgs boson pair production in the gamma gamma b (b) over bar final state using 20 fb(-1) of proton-proton collisions at a center-of-mass energy of 8 TeV recorded with ...