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TU/Phy/MSc/Sem-IV

TEZPUR UNIVERSITY

Autumn Semester Test-AI, 2014

PH-520: Modern Particle PhysicsFull Marks: 25 Time: 30 minutes

[Figures in right-hand margin indicate marks for individual question. Symbols have their usual meanings]

Roll No: …………………............

(A) Tick the right answer/answers. More than one option may be correct. 210=20

1. The eight fold way scheme predicted the existence of the particle

(i) K 0

(ii)   (iii)

 (iv)

 

2. hyperon can be classified as a

(i) nucleon and hadron (ii) baryon and pentaquark(iii) nucleon and meson (iv) baryon and hadron

3. In natural unit of particle physics h is 1 unit of

(i) energy (ii) power (iii) linear momentum (iv) action

4. The decay mode of a muon is

(i) →e  (ii) →e  (iii) →neutral hadrons (iv)  is stable

5. The spin of a graviton is

(i) 0 (ii) +1 (iii) 1 (iv)  

6. The most predominant decay mode of tau lepton is

(i) →e  (ii) →  (iii) →hadrons  (iv) →e 

7. In Minkowski space, in a scattering process, when q is the 4-momentum transfer,

(i) q2>0 (ii) q

2