BEACH2022

Session

Heavy Flavour session

Jun 6, 2022, 8:30 AM

1.20 (D-17)

Conveners

Heavy Flavour session: Block 1

• Tomasz Szumlak (AGH-UST)

Heavy Flavour session: Block 2

• Tomasz Szumlak (AGH-UST)

Heavy Flavour session: Block 3

• Agnieszka Obłąkowska-Mucha (AGH-UST Krakow)

Heavy Flavour session: Block 3

• Agnieszka Obłąkowska-Mucha (AGH-UST Krakow)

85. LHCb physics introductuctory talk

Chris Parkes (University of Manchester (GB) & CERN)

6/6/22, 9:00 AM

LHCb results

82. Rare decays at LHCb, including tests of lepton flavour universality and lepton flavour violation

Marcin Chrzaszcz (Polish Academy of Sciences)

6/6/22, 9:30 AM

Flavour-Changing Neutral-Current processes, such as decays mediated by b->sll transitions, are forbidden at the lowest perturbative order in the Standard Model (SM) and hence might receive comparatively large corrections from new particles in SM extensions. This talk highlights recent measurements from LHCb on b->sll transitions, including tests of lepton flavour universality and lepton...

53. CP violation tests of hyperon-antihyperon pairs at BESIII

Varvara Batozskaya

6/6/22, 10:00 AM

The hyperons are produced with a non-zero spin polarization that is straight-forward to parameterize in processes involving virtual photons or vector mesons, enable direct and precise CP violation tests.
These CP tests can be performed on e.g. J/psi -> Lambda Lambdabar, J/psi-> Sigma Sigmabar, J/psi -> Xi Xibar and psi(2S) -> Omega Omegabar. For the Xi -> Lambda pi decay the exclusive...

79. Mixing and indirect CP violation in charm mesons at LHCb:

Edward Shields

6/6/22, 10:55 AM

LHCb has collected the world's largest sample of charmed hadrons. This sample is used to measure $D^0 -\overline{D}^0$ mixing and to search for $C\!P$ violation in mixing and interference. New measurements from several decay modes are presented, as well as prospects for future sensitivities.e sensitivities.

83. Direct CPV in charm hadrons at LHCb:

Artur Ukleja (EP/ULB Company)

6/6/22, 11:20 AM

LHCb has collected the world's largest sample of charmed hadrons. This sample is used to measure direct $C\!P$ violation in $D$ mesons. New measurements from several decay modes are presented, as well as prospects for future sensitivities

76. Recent results of measurement of CKM angle gamma and CPV in the beauty sector at LHCb.

Wojciech Krupa (AGH University of Science and Technology)

6/6/22, 11:45 AM

The latest studies of beauty-meson decay to open-charm final states from LHCb. It includes recent studies of CKM angle gamma and CPV parameters in the beauty sector, especially the recent measurement of direct CPV in B+ decays. Measurements from several decay modes are presented.

9. Measurement of $B -> D^{(*)} \tau \nu$, using semileptonic tag and leptonic $\tau$ decays with the $BABAR$ detector (cancelled)

6/6/22, 1:30 PM

Semileptonic decays of $B$ mesons involving the high-mass $\tau$ lepton are sensitive probes for physics beyond the Standard Model. The relative rates of branching fractions $R(D) = \mathcal{B}(B \to D \tau \nu) / \mathcal{B}(B \to D l \nu)$ and $R(D^*) = \mathcal{B}(B \to D^* \tau \nu) / \mathcal{B}(B \to D^* l \nu)$ $(l=e,\mu)$ are independent of the CKM element $|V_{cb}|$ and of other...

42. Semileptonic and rare decays at Belle II

Daniel Dorner (HEPHY Vienna)

6/6/22, 1:55 PM

Decays of B mesons that proceed through electroweak and radiative penguin amplitudes attract significant attention due to a number of observed discrepancies between the standard-model predictions and the results. Belle II is expected to perform measurements on channels closely related to those exhibiting anomalies and that are uniquely available to Belle II. We present recent results on...

44. Measurements of charm hadron lifetimes at Belle II

Marko Staric (J. Stefan Institute, Ljubljana, Slovenia)

6/6/22, 2:20 PM

Outstanding vertexing performance and low-background environment are key enablers of a systematic Belle II program targeted at measurements of charm hadron lifetimes Recent results from measurements of D0 meson, D+ meson and Λc baryon lifetimes are presented. The results are the most precise to date.

65. Latest results on rare decays at the NA62 experiment at CERN

Alina Kleimenova (Comenius University, Bratislava)

6/6/22, 3:15 PM

The NA62 experiment at CERN collected world's largest dataset of charged kaon decays in 2016-2018, leading to the observation of the ultra-rare K+ --> pi+ nu nu decay based on 20 candidates.
Dedicated trigger lines were employed for collection of di-lepton final states, which allowed establishing stringent upper limits on the rates lepton flavor and lepton number violating kaon decays. The...

43. Hadronic B decay at Belle II

Sebastiano Raiz (BELLE (BELLE II Experiment))

6/6/22, 3:40 PM

he investigation of B-meson decays to charmed and charmless hadronic final states is a keystone of the Belle II physics program. It allows for theoretically reliable and experimentally precise constraints on the CKM Unitarity Triangle fit, and is sensitive to effects from non-SM physics. Results on branching ratios, direct CP-violating asymmetries, and polarization of various charmless B...

55. Charmed hadron decays at BESIII

BESIII has collected 2.93, 6.32, and 4.4 fb^-1 of e+e- collision data samples at 3.773, 4.178-4.226, and 4.6-4.7 GeV, respectively. In this talk, we will report the improved measurements of the strong phase differences between D0 and D0-bar into K_S/L h+h-, K-pi+pi0, and K-pi+pi+pi-, which are important inputs for precise determination of the CKM angle of gamma/phi_3. Also, we will report the...