We examine the K0K0 complex for constraints on the left-right symmetric model of the electroweak interactions. A light right-handed vector boson is found to require a strong departure from manifest left-right symmetry. The effect on charmed particle decays and other nonleptonic processes are discussed. © 1983.

A DATTA

A RAYCHAUDHURI

Fulltext

University of Calcutta (informally known as Calcutta University or CU) is a collegiate public state university located in Kolkata, West Bengal, India.&nbsp;Within India it is recognized as a &quot;Five-Star University&quot; and accredited &quot;A&quot; Grade by National Assessment and Accreditation Council.

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The University of Calcutta has secured the Fifth position among the Universities of India in the prestigious &quot;Indian University Ranking 2019&quot; list, released by the NIRF of the Ministry of Human Resource Development, Government of India.

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It was established on 24 January 1857, and was one of the first institutions in Asia to be established as a multidisciplinary and Western-style university. Its alumni and faculty include several heads of state, heads of government, social reformers, prominent artists, only academy award winner and Dirac medal winner in India, many Fellows of the Royal Society and five Nobel laureates as of 2019 which is highest in South Asia.

University Of Calcutta

Does a low mass right-handed vector boson imply a departure from manifest left-right symmetry?

Physics Letters B

Using the left-right symmetric model as an illustrative example, we suggest a simple and straightforward way of constraining the W′ mass directly from the decay of the Higgs boson to two photons. The proposed method is generic and applicable to a diverse range of models with a W′-boson that couples to the Standard Model-like Higgs boson. Our analysis exemplifies how the precision measurement of the Higgs to diphoton signal strength can have a pivotal role in probing the scale of new physics. © 2019 authors. Published by the American Physical Society. Published by the American Physical Society under the terms of the «https://creativecommons.org/licenses/by/4.0/» Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI. Funded by SCOAP3.

Physical Review D

Complementary bound on the Wâ€² mass from Higgs boson to diphoton decays

Using our previous bounds on Δρ and the Z-Z′ mixing angle ξN in the SU(2)L-SU(2)R-U(1)(B-L) model from the Z line shape and energy-dependent forward-backward asymmetries of the 1990 data from CERN LEP, we obtain a strong lower bound ∼439 GeV at 90% C.L. on the right-handed charged gauge boson mass for mt=200 GeV using commonly chosen Higgs triplets, which becomes stronger for doublet Higgs fields. It is independent of the neutrino mass or of assumptions about the right-handed quark mixing matrix. Consequences of more exotic Higgs multiplets are also discussed. © 1993 The American Physical Society.

New bound on right-handed charged gauge boson mass

We calculate the KL-KS mass difference in left-right-symmetric models with four quarks. It is found that a low right-handed mass scale requires strong deviations from manifest left-right symmetry. © 1983 The American Physical Society.

Low-mass right-handed gauge bosons, manifest left-right symmetry, and the KL-Ks mass difference

KL-KS mass difference is computed in a left-right symmetric model with three generations of quarks. Under the assumption of "manifest" left-right symmetry the mass of the right-handed charged gauge boson consistent with KL-KS constraint appears to be rather high. A low mass right-handed gauge boson can be accommodated in models with broken "manifest" left-right symmetry. The latter scenario has many non-trivial predictions for the decay of heavy (c, t, b) quarks. © 1983 Springer-Veralg.

Journal	Physics Letters B
Publisher	-
ISSN	0370-2693
Open Access	No