As discussed in Chapter 1, the radioactivity of heavy atoms, embodied in the three processes of α-, β- and γ-decay, were early indicators of nuclear activity. With the production of many species of nuclei in their ground or excited states through nuclear reactions such decays have been ...
We describe in detail the method we have used to determine the CKM angles gamma, alpha and beta using flavour symmetries between non-leptonic B decays. This method is valid in the context of the SM but also in presence of New Physics not affecting the amplitudes. 关键词: High Energy Physic...
decayalphadecaysnucleusnucleiintroduction NuclearandParticlePhysics-Lecture22Alphadecay1IntroductionWehavelookedatgammadecays(duetotheEMforce)andbetadecays(duetotheweakforce)andnowwilllookatalphadecays,whichareduetothestrong/nuclearforce.IncontrasttothepreviousdecayswhichdonotchangeA,alphadecayshappenbyemissionofsomeof...
Although precise measurements of the angle {beta} have been obtained using B decays to charmonium states, the remaining angles, {alpha} and {gamma}, pose greater experimental challenges. In this paper, the latest measurements of modes which will constrain {alpha} and {gamma} will be presented,...
Moreover, the nuclear doses induced by the alpha decays in the damaged 238/ 239Pu and 244Cm-doped glasses were 14 and 35 MGynucl, respectively (Table 1), at the beginning of the leaching experi- ments, and these values are similar to that needed to reach the plateau (i.e., around ...
Comparison of the rates of Meta II decay revealed that Meta II–GtγCT decays substantially slower than Meta II–GtαCT. The rate of Meta II–GtαCT decay was identical to the rate of Meta II decay without the peptides. We proceeded to measure how specific the effect of GtγCT was. ...
Write the nuclear equation for the decay of Po-210 if it undergoes two consecutive alpha decays followed by a beta decay followed by another alpha decay. What does beryllium-8 turn into after alpha decay? How does uranium-238 decay into thorium-234?
QCD corrections to $b o s \\\gamma \\\gamma$ induced decays We present a complete calculation of the Leading Order QCD corrections to the quark level decay amplitude for b -> s gamma gamma and study their relevance for both the inclusive branching ratio BR(B -> X_s gamma gamma) and...
Beta decay occurs when,in a nucleus with too many protons or too many neutrons, one of the protons or neutrons is transformed into the other. In beta minus decay, a neutron decays into a proton, an electron, and an antineutrino: n Æ p + e - +. ...
Some studies have suggested that the alpha particles ejected when radon decays may rank second only to tobacco smoke as a source of lung cancer (SN: 8/15/87, p. Monitoring radiation with Britney Spears? (Health Physics) After a short drive the preceding day to get within arm's reach of...