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Universe: from Beginning to End Brief History of Universe form Birth to Death OR Slide 2 What is matter? Experiments at Fermilab have helped defined the proton, a particle inside the atoms nucleus, and protons substructure of quarks. Study the top quark may give clues to the scientific mystery of why matter has mass Slide 3 Classification of Matter Slide 4 Particles of the Standard Model Slide 5 Neutron n p + e - + e Decay time minutes Slide 6 Bineutron D 2 n + or D n + n + D 2 n + or D n + n + Slide 7 Trineutron 3 n is trineutron a bound state of three neutron? Slide 8 Tetraneutron 4 n is tetraneutron a bound state of four neutron? Slide 9 Transition operator 2 d d Final State: Nucleons in continuum spectrum 4 He, 3 He, 3 H Slide 10 From Elementary Particles to Stars We discussed the tiniest object in the universe the neutron, and existence of the bineutron, trineutron and tetraneutron. Now we leap to the largest stars especially, neutron stars Slide 11 History of our Universe t=0 The Big Bang Universe originated in the explosion of a primordial fireball 0