## Proceedings of the International School of Physics "Enrico Fermi.", Volume 11N. Zanichelli, 1960 - Nuclear physics |

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Page 223

An

angular momentum } ( which include states of orbital momentum 0 and 1 ) . We

have then only to retain the values 1 = l ' = 1 , -1 , - } and , accordingly , ly and k ...

An

**allowed**b - transition corresponds to the emission of both leptons in states ofangular momentum } ( which include states of orbital momentum 0 and 1 ) . We

have then only to retain the values 1 = l ' = 1 , -1 , - } and , accordingly , ly and k ...

Page 287

System momenrum Spin Baryceninc System

scattering for non relativistic electrons . The scattering is shown in the lab system

and in the barycentric system . Before the collision the electrons are indicated by

...

System momenrum Spin Baryceninc System

**Allowed**Forbidden Fig . 7 . Møllerscattering for non relativistic electrons . The scattering is shown in the lab system

and in the barycentric system . Before the collision the electrons are indicated by

...

Page 320

For the K , state , only three particle decay modes are

correspondingly longer lifetime ( * ) [ 44 ] in accordance with experimental

observation [ 8 ] . The most striking fact about K , modes is the slowness of the K +

+ + -7 ...

For the K , state , only three particle decay modes are

**allowed**, leading to acorrespondingly longer lifetime ( * ) [ 44 ] in accordance with experimental

observation [ 8 ] . The most striking fact about K , modes is the slowness of the K +

+ + -7 ...

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### Contents

GENERALITÀ | 1 |

PARTE PRIMA Problemi teorici | 9 |

PARTE SECONDA Correlazioni angolari polarizzazioni e decadimenti beta | 197 |

4 other sections not shown

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### Common terms and phrases

allowed angle angular assumed calculated charge classical combination completely component connection conservation consider constant contribute correlation corresponding coupling curvature decay defined density dependence derived described determination direction discussed effects electric electromagnetic field electron elementary elements emission energy equations example existence experiment experimental expression factor Fermi field final finds formula function geometrodynamics geometry give given gravitational histories initial interaction invariance known leads limit magnetic mass matrix means measured metric modes momentum neutrino neutron nuclei nucleons observed obtained operators pairs parity particle phase Phys physics polarization possible present principle problem properties purely quantity quantum quantum mechanics radiation ratio reason reference relation relativity requires respect result scattering shown shows solution space spin symmetry Table theory transformation transitions universe vector wave weak zero