Anshika Bansal
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View article: D → Pℓ+ℓ− decays assisted by QCD light-cone sum rules
D → Pℓ+ℓ− decays assisted by QCD light-cone sum rules Open
A bstract We suggest a new method to analyse the rare D ( s ) → Pℓ + ℓ − decays ( P = π , K ), combining QCD light-cone sum rules (LCSR) with hadronic dispersion relations. As our main study case, we consider the D + → π + ℓ + ℓ − mode whi…
View article: $D\to P \ell^+\ell^-$ decays assisted by QCD light-cone sum rules
$D\to P \ell^+\ell^-$ decays assisted by QCD light-cone sum rules Open
We suggest a new method to analyse the rare $D_{(s)}\to P \ell^+\ell^-$ decays ($P=π,K$), combining QCD light-cone sum rules (LCSR) with hadronic dispersion relations. As our main study case, we consider the $D^+\toπ^+\ell^+\ell^-$ mode wh…
View article: p --> e+ gamma in LCSR framework
p --> e+ gamma in LCSR framework Open
Proton decay is a baryon number violating process and hence is forbidden in the Standard Model (SM). Baryon number violation is expected to be an important criteria to explain the matter anti-matter asymmetry of the universe. Any detection…
View article: More on Denominator Regularization in Quantum Field Theory
More on Denominator Regularization in Quantum Field Theory Open
Recently \cite{Horowitz:2022rpp,Horowitz:2022uak}, denominator regularisation (Den. Reg.) scheme has been proposed to handle divergences in quantum field theory. It is shown to yield results as simple as in dimensional regularisation schem…
View article: Light cone sum rules and form factors for p → e+γ
Light cone sum rules and form factors for p → e+γ Open
A bstract Proton decay is a baryon number violating process, and hence is forbidden in the Standard Model (SM) of particle physics. Baryon number violation is expected to be an important criteria to explain the matter-anti-matter asymmetry…
View article: $D^0\rightarrow \bar p e^+$ Form Factors in LCSR
$D^0\rightarrow \bar p e^+$ Form Factors in LCSR Open
Baryon number is conserved in the Standard Model (SM) of particle physics. Baryon Number Violation (BNV) is one of the criteria to explain the matter anti-matter asymmetry of the universe. Various beyond the SM (BSM) scenarios motivate BNV…
View article: Light Cone Sum Rules and Form Factors for $p\rightarrow e^+ \gamma$
Light Cone Sum Rules and Form Factors for $p\rightarrow e^+ \gamma$ Open
Proton decay is a baryon number violating process, and hence is forbidden in the Standard Model (SM) of particle physics. Baryon number violation is expected to be an important criteria to explain the matter-anti-matter asymmetry of the un…
View article: $$ \frac{\left|{V}_{ub}\right|}{\left|{V}_{cb}\right|} $$ and quest for new physics
$$ \frac{\left|{V}_{ub}\right|}{\left|{V}_{cb}\right|} $$ and quest for new physics Open
A bstract Charged current semi-leptonic decays of B -meson are important for a precise determination of the CKM elements. The CKM elements |V ub | and |V cb | show a discrepancy between the exclusive and inclusive determinations. These det…
View article: $\frac{|V_{ub}|}{|V_{cb}|}$ and Quest for New Physics
$\frac{|V_{ub}|}{|V_{cb}|}$ and Quest for New Physics Open
Charged current semi-leptonic decays of $B$-meson are important for a precise determination of the CKM elements. The CKM elements $|V_{ub}|$ and $|V_{cb}|$ show a discrepancy between the exclusive and inclusive determinations. These determ…
View article: LCSR application to radiative tau decay
LCSR application to radiative tau decay Open
The non-perturbative QCD effects involved in radiative tau decay ($\tau^- \rightarrow \pi^- \nu_\tau \gamma$) are encoded in two form factors (FFs); vector ($F_V$) and axial-vector ($F_A$). These FFs are the same as those involved in radia…
View article: Phenomenology of <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msup><mml:mrow><mml:mi>τ</mml:mi></mml:mrow><mml:mrow><mml:mo>−</mml:mo></mml:mrow></mml:msup><mml:mo stretchy="false">→</mml:mo><mml:msup><mml:mrow><mml:mi>π</mml:mi></mml:mrow><mml:mrow><mml:mo>−</mml:mo></mml:mrow></mml:msup><mml:msub><mml:mrow><mml:mi>ν</mml:mi></mml:mrow><mml:mrow><mml:mi>τ</mml:mi></mml:mrow></mml:msub><mml:mi>γ</mml:mi></mml:mrow></mml:math> using light cone sum rules
Phenomenology of using light cone sum rules Open
We present the study of radiative tau decay ($\\tau^- \\rightarrow \\pi^-\n\\nu_\\tau \\gamma$), computing the structure dependent contribution using Light\nCone Sum Rules. This decay includes the same form factors as the radiative pion\nd…