Baryon number
a quantum number -ssigned to elementary particles, baryons having baryon number 1, antibaryons −1, and all other observable particles 0; quarks have baryon number 1/3 and antiquarks −1/3.
baryon number
a quantum number equal to the number of baryons in a system of subatomic particles minus the number of antibaryons. baryons have a baryon number of +1, while antibaryons have a baryon number of -1. quarks and antiquarks have baryon numbers of + 1/3 and – 1/3 , respectively (baryons consists of three quarks). mesons, bosons, and leptons all have baryon numbers of 0. although the baryon number has always remained unchanged in reactions observed in experiments, it is postulated that in interactions that take place under conditions of very high energies (as during the formation of the universe, for example), proton decay may take place, and baryon number conservation may be violated. see also isospin, strangeness.
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a proton, neutron, or any elementary particle that decays into a set of particles that includes a proton. adjective of or relating to a baryon noun any of a cl-ss of elementary particles that have a m-ss greater than or equal to that of the proton, partic-p-te in strong interactions, and have a spin of […]
- Baryshnikov
mikhail [mi-keyl;; russian myi-khuh-yeel] /mɪˈkeɪl;; russian myɪ xʌˈyil/ (show ipa), born 1948, russian ballet dancer, born in latvia, in the u.s. since 1974. noun mikhail. born 1948, soviet-born ballet dancer, who defected (1974) to the west while on tour with the kirov ballet: director (1980–90) of the american ballet theatre
- Barysphere
centrosphere (def 2). noun a former name for core (sense 4)
- Baryta
also called calcined baryta, barium oxide, barium monoxide, barium protoxide. a white or yellowish-white poisonous solid, bao, highly reactive with water: used chiefly as a dehydrating agent and in the manufacture of gl-ss. also called caustic baryta, barium hydroxide, barium hydrate. the hydroxide, hydrated form of this compound, ba(oh) 2 ⋅8h 2 o, used chiefly […]
- Baryta water
an aqueous solution of barium hydroxide, used chiefly as a reagent. historical examples barii ferrocyanidum, l. from pure ferrocyanide of iron digested in baryta water. cooley’s cyclopdia of practical receipts and collateral information in the arts, manufactures, professions, and trades…, sixth edition, volume i arnold cooley a portion of this baryta water is then made […]