Model independent extraction of new physics from Hadronic uncertainties in B ---> K* l+ l- Decay (Record no. 48883)

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008 - FIXED-LENGTH DATA ELEMENTS--GENERAL INFORMATION
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100 ## - MAIN ENTRY--AUTHOR NAME
Personal name Diganta Das
Relator term author
245 ## - TITLE STATEMENT
Title Model independent extraction of new physics from Hadronic uncertainties in B ---> K* l+ l- Decay
260 ## - PUBLICATION, DISTRIBUTION, ETC. (IMPRINT)
Year of publication 2013
300 ## - PHYSICAL DESCRIPTION
Number of Pages 103p.
502 ## - DISSERTATION NOTE
Dissertation note 2013
502 ## - DISSERTATION NOTE
Degree Type Ph.D
502 ## - DISSERTATION NOTE
Name of granting institution HBNI
520 3# - SUMMARY, ETC.
Summary, etc In this thesis using the semi-leptonic decay B → K* l+ l- , it is shown how NP signal can be extracted to all orders in α(s) in perturbation theory, including ‘non-factorizable’ corrections at leading order in (Λ(QCD))/m(b) in heavy quark expansion. Relations between various hadronic form factor ratios and observables are derived independent of any Wilson coefficients, which enable the researcher to test these ratios in experiments. This thesis is divided in to six chapters. Brief introduction to the theoretical tools needed to study B physics(the standard model of electroweak interaction) is given in Chapter 1. Yukawa Lagrangian which encodes the entire flavour structure of the standard model, are discussed in this chapter. The phenomenology of B decays are described in an effective field theory approach called the Operator Product Expansion (OPE). The hadronic estimates are based on the heavy quark symmetry which is discussed at the end of the chapter. The theoretical framework of B → K* l+ l- decay is described in Chapter 2. The angular distribution of B → K* l+ l- is described in Chapter 3. There are six transversity amplitudes corresponding to each of three polarization states of K meson with two chirality of the leptonic current. A model independent framework to study new physics effects is developed in Chapter 4. The low energy approximation of various relations are discussed. It is shown that these relations can be used to test the low energy approximation of form factor calculations. A numerical analysis is presented, in comparing it with the current experimental data on the B → K* l+ l- mode. Also compared the present approach with the theoretical approach available in the literature. In this thesis the author has presented various relations among observables without involving any form factors and Wilson coefficients The violation of these relations will be a clean signals of new physics. In addition, various relations between ratios of form factors and observables that are free from any Wilson coefficients are derived.
650 14 - SUBJECT ADDED ENTRY--TOPICAL TERM
Topical Term Physics
653 10 - INDEX TERM--UNCONTROLLED
Uncontrolled term HBNI Th62
653 10 - INDEX TERM--UNCONTROLLED
Uncontrolled term New Physics
653 10 - INDEX TERM--UNCONTROLLED
Uncontrolled term Standard Model
720 1# - ADDED ENTRY--UNCONTROLLED NAME
Thesis Advisor Indumathi, D.
Relator term Thesis advisor [ths]
720 1# - ADDED ENTRY--UNCONTROLLED NAME
Thesis Advisor Rahul Sinha
Relator term Thesis advisor [ths]
856 ## - ELECTRONIC LOCATION AND ACCESS
Uniform Resource Identifier http://www.imsc.res.in/xmlui/handle/123456789/348
942 ## - ADDED ENTRY ELEMENTS (KOHA)
Koha item type THESIS & DISSERTATION
Holdings
Withdrawn status Lost status Damaged status Not for loan Current library Full call number Accession Number Uniform Resource Identifier Koha item type
        IMSc Library HBNI Th62 69369 http://www.imsc.res.in/xmlui/handle/123456789/348 THESIS & DISSERTATION
The Institute of Mathematical Sciences, Chennai, India

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