CKM 2025 - 13th International Workshop on the CKM Unitarity Triangle

15 Sept 2025, 02:00 → 19 Sept 2025, 14:45 Europe/Zurich

Sala Castello (Hotel Regina Margherita)

Francesca Dordei (INFN, Cagliari (IT)), Francesco Dettori (Universita e INFN, Cagliari (IT))

CKM 2025 is the 13th International Workshop on the CKM Unitarity Triangle, to be held September 15 to 19, 2025 in Cagliari, Sardinia, Italy.

The CKM series is a well-established international meeting in the field of quark-flavour physics that brings together experimentalists and theorists to a common platform. The program covers neutron, kaon, charm and beauty hadron, top quark physics and lepton flavour violating Higgs.

See also conference website

 https://ckm2025.ca.infn.it/

 

Second_Bulletin_CKM.pdf

Third_Bulletin_CKM.pdf

Monday 15 September

Registration

Welcome

Conveners: Francesca Dordei (INFN, Cagliari (IT)), Francesco Dettori (Universita e INFN, Cagliari (IT))

1 Welcome from INFN Cagliari and University of Cagliari

Speakers: Alessandro Cardini (INFN Cagliari, Italy), Biagio Saitta (Universita e INFN, Cagliari (IT)), Prof. Michele Saba (UniCa Physics Department)

WelcomeCKM.pdf

2 Welcome and introduction

Speakers: Francesca Dordei (INFN, Cagliari (IT)), Francesco Dettori (Universita e INFN, Cagliari (IT))

CKM_intro.pdf

Plenary Session

Convener: Marta Calvi (Universita & INFN, Milano-Bicocca (IT))

3 Review on phenomenology

Speaker: Marzia Bordone (University of Zürich and CERN)

CKM_Bordone.pdf

4 Review of e+e- colliders

Speaker: Soeren Andre Prell (Iowa State University (US))

Prell-CKM2025.pdf

5 Review of hadron colliders

Speaker: Fred Blanc (EPFL - Ecole Polytechnique Federale Lausanne (CH))

20250915_CKM_HFatHadronColliders_final.pdf

Coffee break

WG3

Conveners: Eluned Anne Smith (Massachusetts Inst. of Technology (US)), Méril REBOUD (CNRS - IJClab), Radoslav Marchevski (École Polytechnique Fédérale de Lausanne (EPFL)), Slavomira Stefkova

6 Weak radiative $B$ decays to NNLO with full charm mass dependence (15'+3')

We present next-to-next-to-leading order predictions for the decay $\bar{B}\to X_s \gamma$. Special emphasis is put on the recently completed ${\cal O}(\alpha_s^2)$ corrections to the interference of the photonic dipole operator $Q_7$ and the current-current operators $Q_1$ and $Q_2$.
We provide updated results for the branching ratio with reduced uncertainties.

Speakers: Matthias Steinhauser, Matthias Steinhauser (KIT)

steinhauser_bsg.pdf

7 B -> X_s gamma and other radiative decays in Belle II (15'+3')

Speaker: Ana Luisa Carvalho (DESY)

BtoXsgamma_CKM2025.pdf

8 Rare radiative B hadron decays in LHCb (15'+3')

Speaker: Lais Soares Lavra (The University of Edinburgh (GB))

v1_CKM2025-LaisLavra.pdf

9 Subleading corrections to inclusive penguin decays (15'+3')

Speaker: Tobias Hurth (Johannes Gutenberg Universitaet Mainz (DE))

HurthCKM2025.pdf

WG5

Conveners: Jordy Butter (University of Cambridge (GB)), Maria Laura Piscopo, Xiaodong Shi (KEK)

10 Overview of recent progress in QCD factorisation for non-leptonic B-meson decays (20'+4')

Speaker: Philipp Böer

Boeer_CKM25.pdf

11 Time-integrated measurements of γ at LHCb (20'+4')

Speaker: Shunan Zhang (University of Oxford (GB))

LHCb_TimeInt_gamma_CKM2025.pdf

12 Direct CPV in B decay at Belle II (20'+4')

Speakers: Thibaud Humair (DESY), Thibaud Humair (Deutsches Elektronen-Synchrotron (DE))

CKM2025-thumair.pdf

Lunch

WG6

Conveners: Didar Dobur (Ghent University (BE)), Manuel Szewc, Dr Maria Moreno Llacer (Univ. of Valencia and CSIC (ES))

13 Theoretical overview of Higgs decays to fermions (20'+8')

Speaker: Michele Tammaro (INFN)

CKM25_Tammaro.pdf

14 Di-Higgs production and Higgs self coupling measurements at LHC (22'+8')

Speaker: Mohamed Belfkir (United Arab Emirates University (AE))

Di-Higgs production and Higgs self-coupling measurements at the LHC - CKM2025.pdf

15 Measurements of Higgs yukawa couplings at LHC (22'+8')

Speaker: Matteo Marchegiani (ETHZ - ETH Zurich)

25.09.15_CKM2025_Yukawa_couplings_MM.pdf

16 Measurement of rare top processes and their interpretations (22'+8')

Speaker: Matteo Negrini (Universita e INFN, Bologna (IT))

CKM2025_negrini.pdf

WG7

Conveners: Keri Vos (Nikhef National institute for subatomic physics (NL)), Michel Bertemes (Austrian Academy of Sciences (AT)), Tommaso Pajero (CERN)

17 CP violation in charm decays (theory) (20'+7')

Speaker: Maria Laura Piscopo (Nikhef)

CKM25_Piscopo.pdf

18 CP violation in charm decays at Belle (II) (20'+4')

Speaker: Sanjeeda Bharati Das

CKM_sanjeeda.pptx.pdf

19 Testing $SU(3)_F$ symmetry in hadronic $D$ decays (20'+6')

Speaker: Carolina Da Silva Bolognani (Nikhef National institute for subatomic physics (NL))

ckm2025.pdf

20 CP violation in charm decays at LHCb (20'+4')

Speaker: Luca Balzani (Technische Universitaet Dortmund (DE))

CKM25_Luca_Balzani.pdf

21 Charm prospects at FCC-ee (15'+4')

Speaker: Dominik Stefan Mitzel (Technische Universitaet Dortmund (DE))

CKM_Mitzel_2025.pdf

Coffee break

Plenary Session

Convener: Christoph Schwanda

22 Review on Charm physics results

Speaker: Giulia Tuci (Heidelberg University (DE))

CKM_2025_Tuci.pdf

23 Review on the Lattice

Speaker: Tobias Tsang (CERN)

Tsang_CKM.pdf

24 Review on Kaon physics results

Speaker: Dr Joel Swallow (INFN - Laboratori Nazionali di Frascati)

CKM_Kaons_JSwallow_v3.1-compressed.pdf

CKM_Kaons_JSwallow_v3.1.pdf

25 Beta decay and Lepton universality

Speaker: Dinko Pocanic (University of Virginia (US))

pocanic_BetaDecay_LU.pdf

26 Progress in high pT (top, Higgs, flavour at high pT)

Speaker: Syuhei Iguro (Nagoya University)

CKM_Iguro.pdf

Welcome drink

Tuesday 16 September

WG2

Conveners: Abhijit Mathad (CERN), Judd Harrison, Markus Tobias Prim (University of Bonn (DE)), Martin Jung (Università di Torino & INFN)

27 |V_ub| measurements: Exclusive and inclusive semileptonic decays at Belle II (20'+4')

Speaker: Marcel Hohmann

MHohmann_IncExcVub.pdf

28 |V_cb| measurements at Belle II (20'+4')

Speaker: Philipp Horak (University of Victoria)

ckm_vcb_belle2.pdf

29 Determination of CKM matrix elements in FCCC decays at LHCb (20'+4')

Speaker: Fabian Christoph Glaser (Heidelberg University (DE), Université Paris-Saclay (FR))

CKM_Glaser.pdf

30 Prospects of CKM matrix elements at FCC-ee (20'+4')

Speaker: Stephane Monteil (Université Clermont Auvergne (FR))

FCC_CKM2025_Flavours_monteil.pdf

31 Prospects of CKM matrix elements at near-future detectors (LHCb UII and Belle-II) (20'+4')

Speaker: Marcello Rotondo (INFN e Laboratori Nazionali di Frascati (IT))

rotondo_ckm2025_v1.pdf

WG3

Conveners: Eluned Anne Smith (Massachusetts Inst. of Technology (US)), Méril REBOUD (CNRS - IJClab), Radoslav Marchevski (École Polytechnique Fédérale de Lausanne (EPFL)), Slavomira Stefkova

32 Experimental status of K+ -> pi+ nu nu decay (15'+5')

Speakers: Mauro Piccini, Mauro Piccini (INFN - Sezione di Perugia (IT))

CKM25_NA62_Piccini.pdf

33 Experimental status of K0 -> pi0 nu nu (15'+5')

Speaker: Chieh Lin (National Changhua University of Education)

CKM2025_KOTO_v0.pdf

34 Rare strange decays at LHCb (15'+5')

Speaker: Miguel Fernandez Gomez (Universidade de Santiago de Compostela (ES))

CKMWorkshop_MFG_Strange_Final.pdf

35 Theory overview of rare kaon decays (15'+5')

Speakers: Avital Dery, Avital Dery, Avital Dery, Avital Dery (Weizmann Institute of Science (IL))

CKM_2025_DERY.pdf

36 Experimental overview of rare charm decays (15'+5')

Speaker: Dr Bai-Cian Ke

CKM2025_rare_charm_decays.pdf

37 Effective Field Theory analysis of rare charm decays (15'+5')

Speaker: Mr Luiz Vale Silva

Luiz_VALE_SILVA_v7.pdf

Coffee break

WG4

Conveners: Chunhui Chen (Iowa State University (US)), Eleftheria Malami (University of Siegen), Peilian Li (University of Chinese Academy of Sciences)

38 Measurements of sin(2φ2eff) and constraint on sin(2φ2) at Belle and Belle II (20'+7')

Speaker: Ryogo Okubo (Nagoya University)

ckm2025_belle2_phi2_okubo.pdf

39 Measuring time-dependent CP violation without signal vertexing at B factories (20'+7')

Speaker: Mirco Dorigo (INFN Trieste)

TDCPV_noSignalVtx_CKM.pdf

40 Latest measurement of $\phi_s$ from CMS and ATLAS (20'+7')

Speaker: Franco Simonetto (Universita e INFN, Padova (IT))

FrancoSimonetto.pdf

41 Towards high-precision measurements on mixing phases φd, φs, properly including penguin contributions (20'+7')

Speaker: Kristof De Bruyn

CKM2025_Penguins.pdf

WG7

Conveners: Keri Vos (Nikhef National institute for subatomic physics (NL)), Michel Bertemes (Austrian Academy of Sciences (AT)), Tommaso Pajero (CERN)

42 Final state interactions in charm decays (20'+7')

Speaker: Eleftheria Solomonidi

EleftheriaS-CKM2025.pdf

43 Charmed baryons decays and CPV (20'+7')

Speaker: Zhi-Peng Xing (NanJing Normal University)

Charmbaryon -and-CPV1.pdf

44 CP violation in charmed baryons at LHCb and Belle (II) (16'+4')

Speaker: Angelo Carbone (University of Bologna and INFN (IT))

CKM2025Carbone_final.pdf

45 Magnetic and electric dipole moments of charmed baryons at ALADDIN (27'+9')

Speaker: Sergio Javier Jaimes Elles

ALADDIN_CKM2025_SJaimes.pdf

46 CKM 2025 workshop picture

Lunch

WG6

Conveners: Didar Dobur (Ghent University (BE)), Manuel Szewc, Dr Maria Moreno Llacer (Univ. of Valencia and CSIC (ES))

47 Theoretical predictions for toponium production at the LHC (20'+8')

Speaker: Matthias Steinhauser

steinhauser_ttlhc.pdf

48 Search for pseudo-scalars decaying to top anti-top pairs and toponium (22'+8')

Speaker: Cristina Giordano (Austrian Academy of Sciences (AT))

CKM2025_Giordano_v2.pdf

49 Single top production and direct measurement of Vtd, Vts, Vtb at LHC (22'+8')

Speaker: Mohammed Faraj (Abdus Salam Int. Cent. Theor. Phys. (IT))

CKM2025_mfaraj_singleTop_production.pdf

WG7

Conveners: Keri Vos (Nikhef National institute for subatomic physics (NL)), Michel Bertemes (Austrian Academy of Sciences (AT)), Tommaso Pajero (CERN)

50 Progress in lattice QCD in studying CPV and mixing in charm (27'+8')

Speaker: Felix Erben (CERN)

Erben_CKM_25.pdf

51 Time-dependent CPV and mixing in charm decays at LHCb (20'+5')

Speaker: Flo Reiss (University of Freiburg (DE))

2025_09_16_CKM_FReiss.pdf

52 Boosting the search for matter-antimatter asymmetries of oscillating charmed mesons with accelerators at LHCb (8 + 2')

Speaker: Maurizio Martinelli (Universita & INFN, Milano-Bicocca (IT))

20250916_ckm2025.pdf

WG4 & WG5 & WG7

53 Simultaneous determination of $\gamma$ and charm mixing and CPV parameters at LHCb (20'+5')

Speaker: Alessandro Bertolin (Universita e INFN, Padova (IT))

CKM 2025 bertolin.pdf

54 Global fit analysis of $\gamma$ and charm mixing and CPV parameters (UTFit) (20'+5')

Speaker: Mr Roberto Di Palma (Università Roma Tre, Infn, sezione di Roma Tre)

rdp_CKM.pdf

WG1

Conveners: Dr Bai-Cian Ke, Gregorio Herdoiza, Leah Broussard

55 BESIII measurement of semileptonic hyperon decays and Vus determination (20' + 8')

Speakers: Varvara Batozskaya, Varvara Batozskaya (National Centre for Nuclear Research (PL))

CKM2025_Batozskaya.pdf

Coffee break

WG1

Conveners: Bai-Cian Ke baiciank, Gregorio Herdoiza, Leah Broussard (Oak Ridge National Laboratory)

56 Measurement of the Neutron Lifetime at J-PARC (20'+4')

Speaker: Kenji Mishima

Mishima_CKM2025.pdf

57 Precision tests of CKM unitarity with the Neutron ‘a’ ‘b’ (Nab) spectrometer (20'+4')

Measurements of neutron decay parameters can provide the value of the CKM matrix element Vud, which dominates its first row. Thanks to comparatively small theoretical uncertainties, such measurements have the potential to surpass the current most precise methods using nuclear decays and enable the most sensitive test of CKM unitarity. However, various discrepancies between previous results from neutron decay have been limiting the precision reach.

The Nab spectrometer installed at the Fundamental Neutron Physics Beamline of the Spallation Neutron Source is measuring the electron-neutrino correlation parameter ‘a’ in the decay of free, unpolarized neutrons, with the goal to achieve world-leading precision. This parameter, together with measurements of the neutron lifetime, determines Vud. A follow-on measurement of correlations in decays of highly polarized neutrons (‘pNAB’) has the potential to resolve discrepancies between previous correlation measurements with unpolarized and polarized neutrons and provide a measurement of Vud---and a CKM unitarity test---with world-leading precision. Additionally, the spectrometer is sensitive to effects beyond the Standard Model theory of the weak interaction.

This presentation will introduce the Nab spectrometer, provide results of the successful commissioning run, and discuss the path towards reaching the ultimate precision with Nab and eventually pNAB.

Speaker: Wolfgang Schreyer

2025CKM.pdf

2025CKM.pptx

58 Data-driven methods for radiative corrections in Vud / Vus (20'+4')

Speaker: Misha Gorshteyn (Mainz University)

Gorshteyn CKM Workshop Cagliari.pdf

59 A sub-percent Determination of the Nucleon Axial Coupling from Lattice QCD (20' + 4')

Speaker: Zack Hall

ZH_CKM_Workshop_gA.pdf

60 Summary and prospects of experimental results for Vus (20'+4')

Speaker: Dr Joel Swallow (INFN - Laboratori Nazionali di Frascati)

CKM_Vus_JSwallow_v3-compressed.pdf

WG4 & WG5 & WG7

61 BESIII measurement of strong parameters of charm decays (22'+8')

Speaker: Shunan Zhang (University of Oxford (GB))

BESIII_strong_params_CKM2025.pdf

62 HFLAV news (22'+8')

Speaker: Ulrik Egede (Monash University (AU))

HFLAV-15Sep2025.pdf

Quiz - please access now

WG4 & WG5

63 Report from CKMfit (15'+8')

Speakers: Olivier Deschamps, Dr Olivier Deschamps (Université Clermont Auvergne (FR))

CKMFitter@CKM25_OD_light.pdf

64 Time-dependent measurement of γ at LHCb (15'+8')

Speaker: Anna Lupato (Università di Bergamo & INFN Padova)

ckm2025_lupato.pdf

HFLAV meeting

https://indico.cern.ch/event/1582303/

Conveners: Mirco Dorigo (INFN Trieste), Ulrik Egede (Monash University (AU))

indico agenda

Wednesday 17 September

WG1

Conveners: Bai-Cian Ke baiciank, Gregorio Herdoiza, Leah Broussard (Oak Ridge National Laboratory)

65 Review of lattice results for Vus and Vud (20'+4')

Speaker: Dr James Simone (Fermilab)

simone.pdf

66 Lattice results regarding electromagnetic corrections to hadronic decays (20'+4')

Speakers: Antonin Portelli (University of Southampton), Prof. Antonin Portelli (The University of Edinburgh), Dr Antonin Portelli

portelli.pdf

67 First-principles evaluation of inclusive hadronic tau decays in QCD+QED (20'+4')

Speaker: Matteo Di Carlo (CERN)

tau_ckm2025_mdc.pdf

68 Experimental studies of leptonic D decays (20'+4')

Speaker: Xiao Wu

talk_ckm.pdf

69 Experimental studies of semileptonic D decays (20'+4')

Speaker: Hui Li

Semileptonic_D_decay_at_BESIII.pdf

WG2

Conveners: Abhijit Mathad (CERN), Judd Harrison, Markus Tobias Prim (University of Bonn (DE)), Martin Jung (Università di Torino & INFN)

70 Status and prospects of LFU and angular measurements at Belle II (20'+4')

Speaker: Ilias Tsaklidis (University of Bonn)

2025_CKM_LFU_belleII_itsaklid.pdf

71 Tests of LFU in tree-level b-hadron decays at LHCb (20'+4')

Speaker: Alessandra Gioventù (University of Barcelona (ES))

LFUteststreelevelLHCb_agiovent.pdf

72 Angular analyses of charged current decays at LHCb (20'+4')

Speaker: Hasret Nur (University of Glasgow (GB))

CKM_HHN.pdf

73 $B \to D^*$ angular analyses (20'+4')

Speaker: Ludovico VITTORIO

CKM25_LV.pdf

74 S-wave contributions to $B \to D\pi\ell\nu$ decays (20'+4')

Speaker: Raynette Van Tonder (Karlsruhe Institute of Technology)

CKM2025_vanTonder.pdf

Coffee break

WG3

Conveners: Eluned Anne Smith (Massachusetts Inst. of Technology (US)), Méril REBOUD (CNRS - IJClab), Radoslav Marchevski (École Polytechnique Fédérale de Lausanne (EPFL)), Slavomira Stefkova

75 B -> K nu nu measurements and prospects (18'+4')

Speaker: Eldar Ganiev (Jožef Stefan Institute)

Knunu_CKM_v2.pdf

76 Experimental status of B -> K tau tau (18'+4')

Speakers: Niharika Rout, Niharika Rout (INFN Trieste), Niharika Rout

CKM_Ktt_NR_v3.pdf

77 Overview of the lepton flavour violating b -> s l l’ decays (18'+4')

Speaker: Matteo Rama (INFN Pisa (IT))

LFV_BDecays.pdf

78 What can we learn from the B -> K nu nu measurements? (18'+4')

Speaker: Salvador ROSAURO-ALCARAZ

Rosauro_BKnunu_25.pdf

WG6

Conveners: Didar Dobur (Ghent University (BE)), Manuel Szewc, Dr Maria Moreno Llacer (Univ. of Valencia and CSIC (ES))

79 W mass measurement (22'+8')

Speaker: Cristina Alexe (INFN Pisa)

Alexe_CKM25_W_mass_LHC_v2.pdf

80 Searches for heavy resonances (HNL, Leptoquarks, VLQ) (22'+8')

Speakers: Pedro Salvador Urrejola Pereira (Johannes-Gutenberg-Universitaet Mainz (DE)), Pedro Urrejola (Universidad San Sebastian (USS) (CL))

CKM.pdf

81 Future physics prospects at HL-LHC (22'+8')

Speaker: Paola Mastrapasqua (Universite Catholique de Louvain (UCL) (BE))

HLLHC_CKM_PMastrapasqua_2.pdf

Lunch

Social activity

Thursday 18 September

WG1

Conveners: Bai-Cian Ke baiciank, Gregorio Herdoiza, Leah Broussard (Oak Ridge National Laboratory)

82 D-meson decays on the lattice (20'+4')

Speaker: Simon Kuberski (CERN)

25ckm_kuberski.pdf

83 Results in phenomenology relevant to Inclusive D decays (20'+4')

Speaker: Qin Qin

Inclusive_Qin.pdf

84 Results in Effective Field Theory relevant to Vcs and Beyond Standard Model (20'+4')

Speakers: Danny van Dyk (TU München), Danny van Dyk (Durham University & IPPP)

CKM_2025.pdf

85 Electromagnetic corrections to leptonic D(s) decays at one loop (20'+4')

Speakers: Dr Aritra Biswas, Aritra Biswas (Institute of Mathematical Sciences (IMSc.))

CKM_2025.pdf

86 Prospects of experimental studies in the charm sector (20'+4')

Speaker: Yu Zhang

CKM2025_Charm_prospects_STCFandLHCb.pdf

WG6

Conveners: Didar Dobur (Ghent University (BE)), Manuel Szewc, Dr Maria Moreno Llacer (Univ. of Valencia and CSIC (ES))

87 Theoretical overview on CP-violation at high pT (20'+8')

Speaker: Victor Miralles (University of Manchester)

VMiralles_CKM2025.pdf

88 Search for CP-violation in top production and decay at LHC (22'+8')

Speakers: Haichen Wang, Haichen Wang (Lawrence Berkeley National Lab. (US))

CKM2025 (1).pdf

89 Spin correlation and entanglement at colliders (20'+8')

Speaker: Simone Tentori (UCLouvain)

Tentori_CKM.pdf

90 Spin correlation and entanglement in top and Higgs sector at LHC (22'+8')

Speaker: Dr Maria Moreno Llacer (Univ. of Valencia and CSIC (ES))

MariaMorenoLlacer_SpinCorrAndEntanglement_Sept2025.pdf

Coffee break

WG3

Conveners: Eluned Anne Smith (Massachusetts Inst. of Technology (US)), Méril REBOUD (CNRS - IJClab), Radoslav Marchevski (École Polytechnique Fédérale de Lausanne (EPFL)), Slavomira Stefkova

91 Lepton Flavour Universality tests in FCNC (15'+5')

Speakers: Alex Marshall (University of Bristol (GB)), Alexander Mclean Marshall

Alex Marshall - Lepton Flavour Universality tests in FCNC.pdf

92 Latest news from b -> s mu mu at LHCb (15'+5')

Speaker: Eluned Anne Smith (Massachusetts Inst. of Technology (US))

CKM_2025_Smith_final.pdf

93 Angular analysis of b -> s ee at LHCb (15'+5')

Speaker: Lorenzo Paolucci (The University of Manchester (GB))

LPaolucci_CKM2025_v2.pdf

94 Theory update for b -> sll decays (15'+5')

Speakers: Bernat Capdevila, Javier Virto (Universitat de Barcelona)

BernatCKM2025.pdf

95 Rare and radiative Bs -> mu mu gamma (15'+5')

Speaker: Camille Normand (University of Bristol (GB))

Normand_CKM.pdf

96 Rare B decays at CMS and Atlas (15'+5')

Speaker: Valeriia Lukashenko (University of Zurich (CH))

CKM_RareDecays.pdf

WG4

Conveners: Chen Chunhui (Iowa State University-Unknown-Unknown), Eleftheria Malami, Peilian Li (University of Chinese Academy of Sciences)

97 Measurements of mixing-induced CP violation at LHCb (20'+4')

Speaker: Alberto Bellavista (Universita e INFN, Bologna (IT))

CKM_presentation_v2.pdf

98 Measurement of Bs mixing parameters at LHCb (20'+4')

Speaker: Jamie Gooding (Technische Universitaet Dortmund (DE))

CKM 2025 Talk.pdf

99 Measurements of sin(2φ1) and sin(2φ1eff) at Belle and Belle II (20'+4')

Speaker: Chunhui Chen (Iowa State University (US))

CKM2025-ChunhuChen.pdf

100 B-Bbar mixing: Width difference and CP asymmetry in flavour-specific decays at next-to-next-leading order of QCD and more (20'+4')

Abstract:
I present new results for the QCD corrections to the leading term in the
1/m_b expansion of the B-B-bar decay matrix element, which is now
completely determined to three-loop order. These results permit a more
precise Standard-Model prediction of the width differences Delta
Gamma_{d,s} and the CP asymmetries in flavour-specific
(e.g. semi-leptonic) decays, a_{fs}^{d,s}, for the Bd-Bd-bar and
Bs-Bs-bar mixing complexes. The perturbative uncertainty of the
well-measured Delta Gamma_s now matches the experimental error. I
further discuss the benefits of better measurements of Delta Gamma_d and
a_{fs}^d, which will provide novel insight into possible new physics in
Bd-Bd-bar mixing.

Speaker: Prof. Ulrich Nierste

nierste_ckm2025.pdf

101 How large could CP violation in B meson mixing be? Implications for baryogenesis and upcoming searches (20'+4')

Speaker: Mr Carlos Miró Arenas (IFIC (CSIC - U. Valencia))

CKM2025_Carlos-Miro.pdf

Lunch

WG2

Conveners: Abhijit Mathad (CERN), Judd Harrison, Markus Tobias Prim (University of Bonn (DE)), Martin Jung (Università di Torino & INFN)

102 Leptonic B decays: B → lν at Belle II (22'+8')

Speaker: Daniel Jacobi (University of Bonn)

CKM_Leptonic_Jacobi_Final.pdf

103 $B \to X_u$ decays (22'+8')

Speaker: Dr Keri Vos (University of Maastricht)

2025_ckm_Vub.pdf

104 $B \to X_c$ decays (22'+8')

Speaker: Gael Finauri

np.pdf

105 $B_s->D_s^{**}$ decays using lattice QCD (22'+8')

Speaker: Alessandro Barone (Johannes Gutenberg University Mainz)

CKM25_Barone.pdf

WG4

Conveners: Chen Chunhui (Iowa State University-Unknown-Unknown), Eleftheria Malami, Peilian Li (University of Chinese Academy of Sciences)

106 Measurements of time-dependent CP violation in the gluonic and radiative penguin decays at Belle and Belle II (22'+8')

Speaker: Shun Watanuki

CKM2025_watanuki_v2.pdf

107 New measurement of B0 lifetime at ATLAS (22'+8')

Speaker: Wolfgang Walkowiak (Universitaet Siegen (DE))

ckm2025_atlas_b0life.pdf

WG5

Conveners: Jordy Butter (University of Cambridge (GB)), Maria Laura Piscopo (Nikhef), Xiaodong Shi (KEK)

108 CPV in b-baryon decays (22'+8')

Speaker: Qin Qin

BaryonCPV-CKM.pdf

109 CPV in baryon decays at LHCb (22'+8')

Speaker: Patrik Adlarson (Uppsala University (SE))

BaryonCPV_Adlarson_LHCb_final_version.pdf

Coffee break

WG2

Conveners: Abhijit Mathad (CERN), Judd Harrison, Markus Tobias Prim (University of Bonn (DE)), Martin Jung (Università di Torino & INFN)

110 Model-independent parameterization of $B \to \pi\pi\ell\nu$ decays (20'+6')

Speaker: Florian Herren (UZH)

CKM_Florian_Herren.pdf

111 Unitarity bounds for $B$ decays with subthreshold cuts (20'+6')

Speaker: Méril REBOUD (CNRS - IJClab)

Reboud_180925.pdf

112 $B_{(s)} \to \pi(K)$ form factors using lattice QCD (20'+6')

Speaker: Logan Roberts (University of Glasgow)

CKM_Talk_LoganRoberts.pdf

113 Phenomenology of $B_{(s)}$ and $D_{(s)}$ semileptonic decays to $\eta$ and $\eta^\prime$ (20'+6')

Speakers: Blazenka Melic, Blazenka Melic (IRB, Zagreb), Blaženka Melić (Rudjer Boskovic Institute)

CKM2025_Vub_Melic.pdf

WG5

Conveners: Jordy Butter (University of Cambridge (GB)), Maria Laura Piscopo (Nikhef), Xiaodong Shi (University of Science and Technology of China)

114 Overview of γ determinations and implications for new physics (20'+5')

Speaker: Alexander Lenz

25_09_gamma_CKM_compressed.pdf

115 Recent results on B → VV decays at LHCb (20'+5')

Speaker: Matthew David Monk (University of Warwick (GB))

mmonk_CKM_18_09_2025.pdf

116 Multi-body charmless decays at LHCb (20'+5')

Speaker: Edoardo Mariani (Centre National de la Recherche Scientifique (FR), LPNHE, Sorbonne Université)

CKM_Cagliari_2025_EMariani.pdf

117 Updated study of CP asymmetries and SU(3)F breaking effects in B2pipi, KK, Kpi (20'+5')

Speaker: Marta Burgos Marcos (Nikhef National institute for subatomic physics (NL))

CKM_MartaBurgos.pdf

Conference dinner

Friday 19 September

Plenary session: WG summaries

Convener: Lesya Shchutska (EPFL - Ecole Polytechnique Federale Lausanne (CH))

118 WG1 summary

Speaker: Gregorio Herdoiza

CKM2025_WG1_summary.pdf

119 WG2 summary

Speakers: Markus Tobias Prim (University of Bonn (DE)), Martin Jung (Università di Torino & INFN)

Summary.pdf

WG2 Summary.pdf

120 WG3 summary

Speakers: Radoslav Marchevski (École Polytechnique Fédérale de Lausanne (EPFL)), Slavomira Stefkova

CKM2025-2.pdf

121 WG4 summary

Speakers: Eleftheria Malami, Eleftheria Malami (University of Siegen)

WG4 Summary, CKM.pdf

Coffee break

Plenary session: WG summaries

Convener: Paolo Gambino

122 WG5 summary

Speaker: Jordy Butter (University of Cambridge (GB))

CKM2025_WG5_Summary.pdf

123 WG6 summary

Speaker: Didar Dobur (Ghent University (BE))

WG6_summary_CKM -1.pdf

124 WG7 summary

Speakers: Dr Keri Vos (University of Maastricht), Tommaso Pajero (CERN)

2025-09-19-ckm-wg7.pdf

Closing

125 News from the CKM Standing Advisory Committee

Speaker: Paolo Gambino

CKM2027-2.pdf

126 Goodbye

Speakers: Francesca Dordei (INFN, Cagliari (IT)), Francesco Dettori (Universita e INFN, Cagliari (IT))

CKM_goodbye.pdf