2021 Meeting of the Division of Particles and Fields of the American Physical Society (DPF21)

Session

Quark Flavor and Precision Measurements

12 Jul 2021, 16:15

Zoom

Conveners

Quark Flavor and Precision Measurements: QFL 2I

• Redwan Md Habibullah (Florida State University (US))
• Romulus Godang (University of South Alabama)
• Soeren Andre Prell (Iowa State University (US))

Quark Flavor and Precision Measurements: QFL 4I

• There are no conveners in this block

389. Measurement of $B \rightarrow D^{**} l \nu$ branching fraction using Belle data

Frank Meier (Duke University)

12/07/2021, 16:15

Quark Flavor and Precision Measurements

talk

There is a significant gap between the inclusive measurement of the $B \rightarrow X_{c} l \nu$ branching fraction and the sum of the measurements of the exclusive $B \rightarrow X_{c} l \nu$ channels. The dominant contributions $B \rightarrow D^{*} l \nu$ and $B \rightarrow D l \nu$ are precisely known but the branching fractions of $B \rightarrow D^{**} l \nu$ have higher uncertainties....

326. Search for CP violation using T-odd triple product asymmetries and measurement of branching fraction for decay $D^{0} \rightarrow K_{s}^{0} K_{s}^{0} \pi^{+} \pi^{-}$

Aman Sangal (University of Cincinnati)

12/07/2021, 16:30

Quark Flavor and Precision Measurements

talk

We report the first search of CP violation using T-odd triple product asymmetries and the most precise branching fraction measurement for the singly Cabibbo suppressed decay $D^{0}\rightarrow K_{s}^{0} K_{s}^{0} \pi^{+} \pi^{-}$. These results will be obtained using $922\,{\rm fb}^{-1}$ data sample that was collected with the Belle detector at the KEKB asymmetric energy $e^+ e^-$ collider. The...

338. Radiative M1 Decays of Heavy Flavor bottom Baryons in Effective Mass Scheme

Mr Avijit Hazra (SRM Institute of Science and Technology)

12/07/2021, 16:45

Quark Flavor and Precision Measurements

talk

We study flavor–conserving M1 radiative decays of heavy flavor bottom baryons in the framework of Effective Mass Scheme (EMS) within the quark model. The intent of the EMS lies in the fact that the masses of the quarks inside the baryon are modified as a consequence of one-gluon exchange interaction with the spectator quarks and it treats all the quarks at the same footing. The baryon mass can...

305. Branching fractions and $CP$ asymmetries of $D_s^{+} \rightarrow h^{+} h^{0}$ at Belle

Yinghui Guan (University of Cincinnati)

12/07/2021, 17:00

Quark Flavor and Precision Measurements

talk

We present measurements of the branching fractions and $CP$ asymmetries for $D_s^{+} \rightarrow K^{+} \eta $, $D_s^{+} \rightarrow K^{+} \pi^0 $, and $D_s^{+} \rightarrow \pi^{+} \eta $ decays, and the branching fraction for $D_s^{+} \rightarrow \pi^{+} \pi^0$ based on the full data sample collected by the Belle detector at the KEKB $e^+e^-$ asymmetric-energy collider. No evidence for $CP$...

116. Measurement of the $CP$-violating phase $\phi_S$ in $B_S^0\rightarrow J/\psi\phi$ decays in ATLAS at $13~\mathrm{TeV}$

Easwar Anand Narayanan (University of New Mexico (US))

12/07/2021, 17:15

Quark Flavor and Precision Measurements

talk

A measurement of the $B_S^0\rightarrow J/\psi\phi$ decay parameters using $80~\mathrm{fb}^{-1}$ of integrated luminosity collected with the ATLAS detector from $13~\mathrm{TeV}$ proton-proton collisions at the LHC is presented. The measured parameters include the CP-violating phase $\phi_S$, the width difference $\Delta\Gamma_S$ between the $B_S^0$ meson mass eigenstates and the average...

100. Calibration of the light flavour mistag rate for ATLAS $b$-jet identification algorithms using the negative tag method in $pp$ collisions at $\sqrt{s}=$ 13 TeV

Angela Maria Burger (Oklahoma State University (US))

12/07/2021, 17:30

Higgs & Electroweak Physics

talk

Many analyses in ATLAS rely on the identification of jets containing $b$-hadrons ($b$-jets) with high efficiency while rejecting more than 99% of non-$b$-jets. Identification algorithms, called $b$-taggers, exploit $b$-hadron properties such as their long lifetime, their high mass, and high decay multiplicity. Recently developed ATLAS $b$-taggers using neural networks are expected to...

117. Calibration of q/g Taggers in the ATLAS Detector

Evan Saraivanov (University of Washington (US))

Beyond Standard Model Physics

talk

The data set provided by the Large Hadron Collider, with an integrated luminosity of 139.0 fb$^{-1}$ at a center-of-mass energy of $\sqrt{s}=13$ TeV, opens a window to search for new physics beyond the Standard Model (BSM). Searches for a resonance in the dijet mass spectrum are powerful probes of many BSM theories. For particles decaying into light-flavor quarks, inclusive searches provide...