Model independent extraction of new physics from Hadronic uncertainties in B ---> K* l+ l- Decay (Record no. 48883)
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fixed length control field | 02899nam a2200253Ia 4500 |
008 - FIXED-LENGTH DATA ELEMENTS--GENERAL INFORMATION | |
fixed length control field | 160627s2013||||xx |||||||||||||| ||und|| |
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 |
Withdrawn status | Lost status | Damaged status | Not for loan | Current library | Full call number | Accession Number | Uniform Resource Identifier | Koha item type |
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IMSc Library | HBNI Th62 | 69369 | http://www.imsc.res.in/xmlui/handle/123456789/348 | THESIS & DISSERTATION |