ترغب بنشر مسار تعليمي؟ اضغط هنا

Recent Results From BESII

119   0   0.0 ( 0 )
 نشر من قبل RongGang Ping
 تاريخ النشر 2010
  مجال البحث
والبحث باللغة English
 تأليف Ping Ronggang




اسأل ChatGPT حول البحث

We present recent results from the BES experiment on the observation of the Y(2175) in $J/psito phi f_0(980) eta$, and $eta(2225)$ in $J/psito gamma phi phi$, and X(1440) in $J/psi$ hadronic decays, together with the new observation of $psi(2S)$ radiative decays and hadronic decays into $nksldb+c.c., ldldbpi^0, ldldbeta$. The effort to search for $J/psi$ decays into $gammagamma$ and invisible decays are also reported.



قيم البحث

اقرأ أيضاً

127 - A. Glazov 2009
HERA $ep$ collider provides unique information on the proton structure. High center of mass energy $s=320$ GeV gives access to both the low Bjorken-$x$ domain and regime of high momentum transfers $Q$. Recently the H1 collaboration reported a high pr ecision measurement of the structure function $F_2$ at low $x$ leading to tight constraints on the sea quark and gluon densities. Both the H1 and ZEUS collaborations measure the structure function $F_L$ which provides an important cross check of the conventional QCD picture. This measurement is recently extended by H1 to low $Q^2$ where small $x$ corrections may play important role. An ultimate precision of the deep inelastic scattering cross section measurement is achieved by combining the measurements of the H1 and ZEUS collaborations. The combined data are used as a sole input to a QCD fit to obtained HERA PDF set. New measurements of inclusive $e^-p$ neutral and charged current scattering cross sections by the ZEUS collaboration at high $Q^2$ improve precision in this kinematic domain. H1 analysis of the DIS high $P_t$ jet production cross section is used for a determination of the strong coupling constant $alpha_S$. Separation of the strange quark density from the total sea is obtained by the HERMES collaboration using tagged $K^{pm}$ production.
140 - T.Uglov 2010
The review on experimental results on charmonium and charmonium-like spectroscopy from B-factories is presented. Main theoretical interpretations, such as conventional charmonium, molecular state, hybrids, tetraquarks and others are discussed.
66 - L. Fields 2016
The MINERvA collaboration is currently engaged in a broad program of neutrino-nucleus interaction measurements. Several recent measurements of interest to the accelerator-based oscillation community are presented. These include measurements of quasi- elastic scattering, diffractive pion production, kaon production and comparisons of interaction cross sections across nuclei. A new measurement of the NuMI neutrino beam flux that incorporates both external hadro-production data and MINERvA detector data is also presented.
75 - L. Bellantoni 2005
The implications of the published KTeV $K^0_L to pi^0mu^+mu^-$ result for interpreting recent $Sigma^+ to pmu^+mu^-$ results are discussed. The status of the KTeV $Xi^0 to Sigma^+mu^- u$ analysis is given. The KTeV $|V_{us}|$ result is also given.
195 - L. Bellantoni 2001
Recent results are presented for (1) the charge asymmetry in semielectronic kaon decay; (2) the charge radius of the neutral kaon; (3) the decay Klong -> pi0 pi0 e+e-; (4) constraints on rho(CKM) from kaon decays; (5) lepton flavor violation. A few w ords about future kaon physics work at Fermilab are included.
التعليقات
جاري جلب التعليقات جاري جلب التعليقات
سجل دخول لتتمكن من متابعة معايير البحث التي قمت باختيارها
mircosoft-partner

هل ترغب بارسال اشعارات عن اخر التحديثات في شمرا-اكاديميا