Download CP Violation in {B_s}^0 -> J/psi.phi Decays: Measured by Sabato Leo (auth.) PDF

By Sabato Leo (auth.)

This thesis studies at the ultimate size of the flavor-mixing section in decays of strange-bottom mesons (B_s) into J/psi and phi mesons played in high-energy proton-antiproton collisions recorded via the Collider scan at Fermilab. Interference happens among direct decays and decays following digital particle-antiparticle transitions (B_s-antiB_s). The part distinction among transition amplitudes (“mixing phase”) is observable and intensely delicate to contributions from non-standard-model debris or interactions which may be very challenging to observe another way – a incontrovertible fact that makes the suitable dimension of the B_s blending part some of the most very important ambitions of particle physics. the consequences offered contain an actual decision of the blending section and a set of different vital supplementary effects. All measurements are one of the such a lot certain on hand from a unmarried test and supply considerably more desirable constraints at the phenomenology of latest debris and interactions.

Show description

Read or Download CP Violation in {B_s}^0 -> J/psi.phi Decays: Measured with the Collider Detector at Fermilab PDF

Similar nonfiction_12 books

Resuscitate! Second Edition: How Your Community Can Improve Survival from Sudden Cardiac Arrest

Surprising cardiac arrest is the top reason for dying between adults, but it needn't be deadly. although survival in so much groups is especially bad, a couple of groups in attaining charges as excessive as 50%. Why are a few groups such a success in snatching lifestyles from the jaws of demise? Resuscitate! describes the stairs any EMS procedure can take to enhance cardiac arrest survival.

Additional info for CP Violation in {B_s}^0 -> J/psi.phi Decays: Measured with the Collider Detector at Fermilab

Sample text

Then the beam transverse-profile was shaped to its optimized configuration by mean of iron plates which acted as collimators and trimmed the transverse beam-halo. The interaction region had a roughly Gaussian distribution in both transverse (ψT ≈ 30 µm) and longitudinal (ψz ≈ 28 cm) planes approximately centered in the nominal interaction point. When the beam profile was narrow enough and the conditions were safely stable, the detectors were powered and data taking started. 2 × 1032 cm−2 s−1 , because of the beam-gas and beam-halo interactions.

6308 [hep-ex] 44. R. Aaij et al. (LHCb Collaboration), Measurement of the Bs0 − B¯ s0 oscillation frequency m s in Bs0 → Ds− (3)π decays. Phys. Lett. 4311 [hep-ex] 45. T. Aaltonen et al. (CDF Collaboration), First flavor-tagged determination of bounds on mixing-induced CP violation in Bs0 → J/ψφ decays. Phys. Rev. Lett. 2397 [hep-ex] 46. V. Abazov et al. (D0 Collaboration), Measurement of Bs0 mixing parameters from the flavortagged decay Bs0 → J/ψφ. Phys. Rev. Lett. 2255 [hep-ex] 47. The CDF and D0 Collaborations, Combination of D0 and CDF results on s and the CPJ/ψφ violating phase βs , CDF Note 9787, D0 Note 5928-CONF (2009) J ψφ 48.

Glashow, J. Iliopoulos, L. Maiani, Weak interactions with Lepton-Hadron symmetry. Phys. Rev. D2, 1285 (1970) 12. J. Augustin et al. (SLAC-SP-017 Collaboration), Discovery of a narrow resonance in e+ e− Annihilation. Phys. Rev. Lett. 33, 1406 (1974) 13. J. Aubert et al. (E598 Collaboration), Experimental observation of a heavy particle. J. Phys. Rev. Lett. 33, 1404 (1974) 30 2 Flavor as a Probe for Non-SM Physics 14. F. Abe et al. (CDF Collaboration), Observation of top quark production in p¯ p collisions.

Download PDF sample

Rated 4.65 of 5 – based on 10 votes