Focus on:
All days
May 20, 2019
May 21, 2019
May 22, 2019
All sessions
Registration
TBD
TBD
TBD
TBD
TBD
TBD
TBD
TBD
TBD
TBD
Hide Contributions
Compact style
Indico style
Indico style - inline minutes
Indico style - numbered
Indico style - numbered + minutes
Indico Weeks View
Back to Conference View
Choose Timezone
Use the event/category timezone
Specify a timezone
Africa/Abidjan
Africa/Accra
Africa/Addis_Ababa
Africa/Algiers
Africa/Asmara
Africa/Bamako
Africa/Bangui
Africa/Banjul
Africa/Bissau
Africa/Blantyre
Africa/Brazzaville
Africa/Bujumbura
Africa/Cairo
Africa/Casablanca
Africa/Ceuta
Africa/Conakry
Africa/Dakar
Africa/Dar_es_Salaam
Africa/Djibouti
Africa/Douala
Africa/El_Aaiun
Africa/Freetown
Africa/Gaborone
Africa/Harare
Africa/Johannesburg
Africa/Juba
Africa/Kampala
Africa/Khartoum
Africa/Kigali
Africa/Kinshasa
Africa/Lagos
Africa/Libreville
Africa/Lome
Africa/Luanda
Africa/Lubumbashi
Africa/Lusaka
Africa/Malabo
Africa/Maputo
Africa/Maseru
Africa/Mbabane
Africa/Mogadishu
Africa/Monrovia
Africa/Nairobi
Africa/Ndjamena
Africa/Niamey
Africa/Nouakchott
Africa/Ouagadougou
Africa/Porto-Novo
Africa/Sao_Tome
Africa/Tripoli
Africa/Tunis
Africa/Windhoek
America/Adak
America/Anchorage
America/Anguilla
America/Antigua
America/Araguaina
America/Argentina/Buenos_Aires
America/Argentina/Catamarca
America/Argentina/Cordoba
America/Argentina/Jujuy
America/Argentina/La_Rioja
America/Argentina/Mendoza
America/Argentina/Rio_Gallegos
America/Argentina/Salta
America/Argentina/San_Juan
America/Argentina/San_Luis
America/Argentina/Tucuman
America/Argentina/Ushuaia
America/Aruba
America/Asuncion
America/Atikokan
America/Bahia
America/Bahia_Banderas
America/Barbados
America/Belem
America/Belize
America/Blanc-Sablon
America/Boa_Vista
America/Bogota
America/Boise
America/Cambridge_Bay
America/Campo_Grande
America/Cancun
America/Caracas
America/Cayenne
America/Cayman
America/Chicago
America/Chihuahua
America/Costa_Rica
America/Creston
America/Cuiaba
America/Curacao
America/Danmarkshavn
America/Dawson
America/Dawson_Creek
America/Denver
America/Detroit
America/Dominica
America/Edmonton
America/Eirunepe
America/El_Salvador
America/Fort_Nelson
America/Fortaleza
America/Glace_Bay
America/Goose_Bay
America/Grand_Turk
America/Grenada
America/Guadeloupe
America/Guatemala
America/Guayaquil
America/Guyana
America/Halifax
America/Havana
America/Hermosillo
America/Indiana/Indianapolis
America/Indiana/Knox
America/Indiana/Marengo
America/Indiana/Petersburg
America/Indiana/Tell_City
America/Indiana/Vevay
America/Indiana/Vincennes
America/Indiana/Winamac
America/Inuvik
America/Iqaluit
America/Jamaica
America/Juneau
America/Kentucky/Louisville
America/Kentucky/Monticello
America/Kralendijk
America/La_Paz
America/Lima
America/Los_Angeles
America/Lower_Princes
America/Maceio
America/Managua
America/Manaus
America/Marigot
America/Martinique
America/Matamoros
America/Mazatlan
America/Menominee
America/Merida
America/Metlakatla
America/Mexico_City
America/Miquelon
America/Moncton
America/Monterrey
America/Montevideo
America/Montserrat
America/Nassau
America/New_York
America/Nipigon
America/Nome
America/Noronha
America/North_Dakota/Beulah
America/North_Dakota/Center
America/North_Dakota/New_Salem
America/Nuuk
America/Ojinaga
America/Panama
America/Pangnirtung
America/Paramaribo
America/Phoenix
America/Port-au-Prince
America/Port_of_Spain
America/Porto_Velho
America/Puerto_Rico
America/Punta_Arenas
America/Rainy_River
America/Rankin_Inlet
America/Recife
America/Regina
America/Resolute
America/Rio_Branco
America/Santarem
America/Santiago
America/Santo_Domingo
America/Sao_Paulo
America/Scoresbysund
America/Sitka
America/St_Barthelemy
America/St_Johns
America/St_Kitts
America/St_Lucia
America/St_Thomas
America/St_Vincent
America/Swift_Current
America/Tegucigalpa
America/Thule
America/Thunder_Bay
America/Tijuana
America/Toronto
America/Tortola
America/Vancouver
America/Whitehorse
America/Winnipeg
America/Yakutat
America/Yellowknife
Antarctica/Casey
Antarctica/Davis
Antarctica/DumontDUrville
Antarctica/Macquarie
Antarctica/Mawson
Antarctica/McMurdo
Antarctica/Palmer
Antarctica/Rothera
Antarctica/Syowa
Antarctica/Troll
Antarctica/Vostok
Arctic/Longyearbyen
Asia/Aden
Asia/Almaty
Asia/Amman
Asia/Anadyr
Asia/Aqtau
Asia/Aqtobe
Asia/Ashgabat
Asia/Atyrau
Asia/Baghdad
Asia/Bahrain
Asia/Baku
Asia/Bangkok
Asia/Barnaul
Asia/Beirut
Asia/Bishkek
Asia/Brunei
Asia/Chita
Asia/Choibalsan
Asia/Colombo
Asia/Damascus
Asia/Dhaka
Asia/Dili
Asia/Dubai
Asia/Dushanbe
Asia/Famagusta
Asia/Gaza
Asia/Hebron
Asia/Ho_Chi_Minh
Asia/Hong_Kong
Asia/Hovd
Asia/Irkutsk
Asia/Jakarta
Asia/Jayapura
Asia/Jerusalem
Asia/Kabul
Asia/Kamchatka
Asia/Karachi
Asia/Kathmandu
Asia/Khandyga
Asia/Kolkata
Asia/Krasnoyarsk
Asia/Kuala_Lumpur
Asia/Kuching
Asia/Kuwait
Asia/Macau
Asia/Magadan
Asia/Makassar
Asia/Manila
Asia/Muscat
Asia/Nicosia
Asia/Novokuznetsk
Asia/Novosibirsk
Asia/Omsk
Asia/Oral
Asia/Phnom_Penh
Asia/Pontianak
Asia/Pyongyang
Asia/Qatar
Asia/Qostanay
Asia/Qyzylorda
Asia/Riyadh
Asia/Sakhalin
Asia/Samarkand
Asia/Seoul
Asia/Shanghai
Asia/Singapore
Asia/Srednekolymsk
Asia/Taipei
Asia/Tashkent
Asia/Tbilisi
Asia/Tehran
Asia/Thimphu
Asia/Tokyo
Asia/Tomsk
Asia/Ulaanbaatar
Asia/Urumqi
Asia/Ust-Nera
Asia/Vientiane
Asia/Vladivostok
Asia/Yakutsk
Asia/Yangon
Asia/Yekaterinburg
Asia/Yerevan
Atlantic/Azores
Atlantic/Bermuda
Atlantic/Canary
Atlantic/Cape_Verde
Atlantic/Faroe
Atlantic/Madeira
Atlantic/Reykjavik
Atlantic/South_Georgia
Atlantic/St_Helena
Atlantic/Stanley
Australia/Adelaide
Australia/Brisbane
Australia/Broken_Hill
Australia/Darwin
Australia/Eucla
Australia/Hobart
Australia/Lindeman
Australia/Lord_Howe
Australia/Melbourne
Australia/Perth
Australia/Sydney
Canada/Atlantic
Canada/Central
Canada/Eastern
Canada/Mountain
Canada/Newfoundland
Canada/Pacific
Europe/Amsterdam
Europe/Andorra
Europe/Astrakhan
Europe/Athens
Europe/Belgrade
Europe/Berlin
Europe/Bratislava
Europe/Brussels
Europe/Bucharest
Europe/Budapest
Europe/Busingen
Europe/Chisinau
Europe/Copenhagen
Europe/Dublin
Europe/Gibraltar
Europe/Guernsey
Europe/Helsinki
Europe/Isle_of_Man
Europe/Istanbul
Europe/Jersey
Europe/Kaliningrad
Europe/Kiev
Europe/Kirov
Europe/Lisbon
Europe/Ljubljana
Europe/London
Europe/Luxembourg
Europe/Madrid
Europe/Malta
Europe/Mariehamn
Europe/Minsk
Europe/Monaco
Europe/Moscow
Europe/Oslo
Europe/Paris
Europe/Podgorica
Europe/Prague
Europe/Riga
Europe/Rome
Europe/Samara
Europe/San_Marino
Europe/Sarajevo
Europe/Saratov
Europe/Simferopol
Europe/Skopje
Europe/Sofia
Europe/Stockholm
Europe/Tallinn
Europe/Tirane
Europe/Ulyanovsk
Europe/Uzhgorod
Europe/Vaduz
Europe/Vatican
Europe/Vienna
Europe/Vilnius
Europe/Volgograd
Europe/Warsaw
Europe/Zagreb
Europe/Zaporozhye
Europe/Zurich
GMT
Indian/Antananarivo
Indian/Chagos
Indian/Christmas
Indian/Cocos
Indian/Comoro
Indian/Kerguelen
Indian/Mahe
Indian/Maldives
Indian/Mauritius
Indian/Mayotte
Indian/Reunion
Pacific/Apia
Pacific/Auckland
Pacific/Bougainville
Pacific/Chatham
Pacific/Chuuk
Pacific/Easter
Pacific/Efate
Pacific/Fakaofo
Pacific/Fiji
Pacific/Funafuti
Pacific/Galapagos
Pacific/Gambier
Pacific/Guadalcanal
Pacific/Guam
Pacific/Honolulu
Pacific/Kanton
Pacific/Kiritimati
Pacific/Kosrae
Pacific/Kwajalein
Pacific/Majuro
Pacific/Marquesas
Pacific/Midway
Pacific/Nauru
Pacific/Niue
Pacific/Norfolk
Pacific/Noumea
Pacific/Pago_Pago
Pacific/Palau
Pacific/Pitcairn
Pacific/Pohnpei
Pacific/Port_Moresby
Pacific/Rarotonga
Pacific/Saipan
Pacific/Tahiti
Pacific/Tarawa
Pacific/Tongatapu
Pacific/Wake
Pacific/Wallis
US/Alaska
US/Arizona
US/Central
US/Eastern
US/Hawaii
US/Mountain
US/Pacific
UTC
Save
Europe/Berlin
English (United States)
English (United Kingdom)
English (United States)
Español (España)
Français (France)
Polski (Polska)
Português (Brasil)
Türkçe (Türkiye)
Монгол (Монгол)
Українська (Україна)
中文 (中国)
Login
Flavor 2019: new Physics in flavor from LHC to Belle II
from
Monday, May 20, 2019 (11:00 AM)
to
Wednesday, May 22, 2019 (6:30 PM)
Monday, May 20, 2019
12:00 PM
Lunch break
Lunch break
12:00 PM - 1:00 PM
1:00 PM
1:00 PM - 2:00 PM
Room: E.0.11
2:00 PM
Flavor Physics at Belle II
-
Francesco Tenchini
Flavor Physics at Belle II
Francesco Tenchini
2:00 PM - 2:30 PM
Room: E.0.11
The Belle II experiment at the SuperKEKB energy-asymmetric $e^+ e^-$ collider is a substantial upgrade of the B factory facility at the Japanese KEK laboratory. The design luminosity of the machine is $8\times 10^{35}$ cm$^{-2}$s$^{-1}$ and the Belle II experiment aims to record 50 ab$^{-1}$ of data, a factor of 50 more than its predecessor. With this data set, Belle II will be able to measure the Cabibbo-Kobayashi-Maskawa (CKM) matrix, the matrix elements and their phases, with unprecedented precision and explore flavor physics with $B$ and charmed mesons, and $\tau$ leptons. Belle II has also a unique capability to search for low mass dark matter and low mass mediators. We also expect exciting results in quarkonium physics with Belle II. From February to July of this year, the machine has completed a commissioning run, achieved a peak luminosity of $5.5\times 10^{33}$ cm$^{-2}$s$^{-1}$, and Belle II has recorded a data sample of about 0.5 fb$^{-1}$. Regular operations are expected to start in March 2019. In this presentation, we will review the status of the Belle II detector, the results of the commissioning run and the near-term prospects for physics at Belle II.
2:30 PM
Anomalies in b->s ll transitions (LHCb)
-
Titus Mombächer
Anomalies in b->s ll transitions (LHCb)
Titus Mombächer
2:30 PM - 3:00 PM
Room: E.0.11
The concept of lepton universality, where the muon and tau particles are simply heavier copies of the electron, is a key prediction in the Standard Model (SM). In models beyond the SM, lepton universality can be naturally violated with new physics particles that couple preferentially to the second and third generation leptons. Over the last few years, several hints of lepton universality violation have been seen in both b->c and b->s semileptonic beauty decays. This presentation will review the anomalies in b->s ll transitions and give an outlook for the near future.
3:00 PM
Progress in Lattice QCD in the B and D Systems
-
Andreas Kronfeld
(Fermilab)
Progress in Lattice QCD in the B and D Systems
Andreas Kronfeld
(Fermilab)
3:00 PM - 3:30 PM
Room: E.0.11
3:30 PM
Coffee break
Coffee break
3:30 PM - 4:00 PM
Room: E.0.11
4:00 PM
Muon Lepton Flavor Violation
-
Angela Papa
Muon Lepton Flavor Violation
Angela Papa
4:00 PM - 4:30 PM
Room: E.0.11
4:30 PM
Lepton Flavor Violation
-
Lorenzo Calibbi
Lepton Flavor Violation
Lorenzo Calibbi
4:30 PM - 5:00 PM
Room: E.0.11
5:00 PM
Tau/Charm factory
-
Simon Eidelmann
Tau/Charm factory
Simon Eidelmann
5:00 PM - 5:30 PM
Room: E.0.11
Tuesday, May 21, 2019
9:00 AM
Aligned and Spontaneous Flavor Violation
-
Daniel Egana-Ugrinovic
(Stony Brook University)
Aligned and Spontaneous Flavor Violation
Daniel Egana-Ugrinovic
(Stony Brook University)
9:00 AM - 9:30 AM
Room: E.0.11
We present a spurion setup called Spontaneous Flavor Violation (SFV) that allows for new physics couplings to quarks that are aligned with the Standard Model Yukawas, but do not necessarily share their hierarchies nor are family universal. We show that SFV naturally arises in theories where the quark family number and CP groups are spontaneously broken at a UV scale. In SFV extensions of the Standard Model, FCNCs are strongly suppressed via the GIM mechanism. We apply this novel flavor Ansatz to a 2HDM, showing that new physics with significant and preferential couplings to first or second generation quarks may be at the electroweak scale. The SFV Ansatz provides strong motivation to search for new physics with generation-specific couplings at colliders.
9:30 AM
Flavor Clockwork
-
Adrian Carmona
Flavor Clockwork
Adrian Carmona
9:30 AM - 10:00 AM
Room: E.0.11
10:00 AM
Effective Field Theories for X Y Z
-
Nora Brambilla
(Physik Department, TU Munich)
Effective Field Theories for X Y Z
Nora Brambilla
(Physik Department, TU Munich)
10:00 AM - 10:30 AM
Room: E.0.11
10:30 AM
Coffee break
Coffee break
10:30 AM - 11:00 AM
Room: E.0.11
11:00 AM
Exotic and Conventional Quarkonium Physics Prospects at Belle II
-
Vladimir Savinov
Exotic and Conventional Quarkonium Physics Prospects at Belle II
Vladimir Savinov
11:00 AM - 11:30 AM
Room: E.0.11
The Belle II experiment at the SuperKEKB energy-asymmetric $e^+ e^-$ collider is a substantial upgrade of the B factory facility at KEK in Tsukuba, Japan. It aims to record a factor of 50 times more data than its predecessor. The experiment completed a commissioning run in 2018, and began full operation in early 2019. Belle II is uniquely capable of studying the so-called "XYZ" particles: heavy exotic hadrons consisting of more than three quarks. First discovered by Belle, these now number in the dozens, and represent the emergence of a new category within quantum chromodynamics. This talk will present the prospects of Belle II to explore both exotic and conventional quarkonium physics.
11:30 AM
CP violation and rare decays in charm decays with LHCb
-
Angelo Di Canto
CP violation and rare decays in charm decays with LHCb
Angelo Di Canto
11:30 AM - 12:00 PM
Room: E.0.11
The LHCb experiment has collected large samples of decays of charmed hadrons, and has made measurements of CP violation and mixing parameters with world-leading precision. Recent results on charm physics at LHCb are presented.
12:00 PM
CP violation in charm
-
Jernej Kamenik
CP violation in charm
Jernej Kamenik
12:00 PM - 12:30 PM
Room: E.0.11
12:30 PM
Lunch break
Lunch break
12:30 PM - 2:00 PM
2:00 PM
Semileptonic and leptonic results from 2018 Belle II commissioning data
-
Cao Lu
Semileptonic and leptonic results from 2018 Belle II commissioning data
Cao Lu
2:00 PM - 2:30 PM
Room: E.0.11
The Belle II experiment, located at the SuperKEKB accelerator complex near Tokyo in Japan, has started its 2019 run to collect collision events at large instantaneous luminosities. In this presentation we show first results from studying missing energy signatures, such as leptonic and semileptonic B meson decays: We report first studies on re-measuring important standard candle processes, such as abundant inclusive B to l X and B to D* l decays, and evaluate the performance of our machine learning based tagging algorithms. In addition, we plan to show first results on control regions and sidebands relevant for re-establishing B to D* and B decays with future Belle II data. We further discuss the potential of Belle II to study the present day anomaly in ratios of charm semileptonic decays with tau-leptons to light leptons, known as R(D) and R(D*)in the literature, with future Belle II data and its potential to measure similar ratios with other hadronic final states.
2:30 PM
A four-dimensional form-factor fit to B->D*lnu with hadronic tagging from BaBar
-
Biplap Dey
A four-dimensional form-factor fit to B->D*lnu with hadronic tagging from BaBar
Biplap Dey
2:30 PM - 3:00 PM
Room: E.0.11
We present results on the first full 4-dimensional angular analysis of B->D*lnu, using the e+e- collision dataset collected by the BaBar experiment at the Y(4S) resonance. One B meson from the Y(4S)->BBbar decay is fully reconstructed in a hadronic decay mode which constrains the kinematics and provides a precise determination of the neutrino momentum vector. We extract the underlying hadronic form-factors employing the model-independent BGL approach and a value for the CKM matrix element Vcb. Last, employing our measured BGL form-factors, we provide new predictions within the Standard Model, for observables related to the the semi-tauonic decay B->D*taunu.
3:00 PM
$\Lambda_b \to \Lambda_c\ell\bar\nu$ and $V_{cb}$: keep HQETing
-
Zoltan Ligeti
$\Lambda_b \to \Lambda_c\ell\bar\nu$ and $V_{cb}$: keep HQETing
Zoltan Ligeti
3:00 PM - 3:30 PM
Room: E.0.11
3:30 PM
Coffee break
Coffee break
3:30 PM - 4:00 PM
Room: E.0.11
4:00 PM
The flavor of ALP
-
Matthias Neubert
(JGU Mainz)
The flavor of ALP
Matthias Neubert
(JGU Mainz)
4:00 PM - 4:30 PM
Room: E.0.11
4:30 PM
Axion flavour models and ALP production at B factories
-
Luca Merlo
(Universidad Autonoma de Madrid)
Axion flavour models and ALP production at B factories
Luca Merlo
(Universidad Autonoma de Madrid)
4:30 PM - 5:00 PM
Room: E.0.11
5:00 PM
BSM Physics with Kaon Decays at NA62
-
Rainer Wanke
BSM Physics with Kaon Decays at NA62
Rainer Wanke
5:00 PM - 5:30 PM
Room: E.0.11
The NA62 experiment at CERN SPS was designed to measure BR(K+ -> pi+ nu nu-bar) with in-flight decays, a novel technique for this channel. NA62 took its first physics data in 2016, reaching sensitivity to the decay at the Standard Model BR. The experiment collected 10 times more statistics in 2017 and a similar amount of data is expected from the 2018 run. The result on K+ -> pi+ nu nu from the full 2016 data set will be presented and prospects for future improvements will be discussed. A large sample of charged kaon decays into final states with multiple charged particles was also collected in 2016-2018. The sensitivity to a number of Lepton Flavour and Lepton Number violating K+ decays provided by this data set is an order of magnitude beyond the current state of the art. Results of the search for these processes with a partial NA62 data sample are available for presentation.
7:30 PM
Conference Dinner
Conference Dinner
7:30 PM - 9:30 PM
Wednesday, May 22, 2019
9:00 AM
Radiative decays at LHCb
-
Biplap Dey
Radiative decays at LHCb
Biplap Dey
9:00 AM - 9:30 AM
Room: E.0.11
9:30 AM
Flavour Physics with High-pT Leptons
-
Admir Greljo
(CERN)
Flavour Physics with High-pT Leptons
Admir Greljo
(CERN)
9:30 AM - 10:00 AM
Room: E.0.11
10:00 AM
More tests of B-decay discrepancies
-
Diego Guadagnoli
(TUM)
More tests of B-decay discrepancies
Diego Guadagnoli
(TUM)
10:00 AM - 10:30 AM
Room: E.0.11
10:30 AM
Coffee break
Coffee break
10:30 AM - 11:00 AM
Room: E.0.11
11:00 AM
Theory progress in inclusive b->qll decays
-
Tobias Huber
Theory progress in inclusive b->qll decays
Tobias Huber
11:00 AM - 11:30 AM
Room: E.0.11
11:30 AM
Power corrections to the inclusive b > s,d ll decays
-
Tobias Hurth
Power corrections to the inclusive b > s,d ll decays
Tobias Hurth
11:30 AM - 12:00 PM
Room: E.0.11
12:00 PM
Charm-loop effect in B->K(*)ll decays beyond leading twist
-
Nico Gubernari
(technische universität münchen)
Charm-loop effect in B->K(*)ll decays beyond leading twist
Nico Gubernari
(technische universität münchen)
12:00 PM - 12:30 PM
Room: E.0.11
We revisit soft gluon contributions to the "charm loop" effect in rare $B\to K^{(*)}ll$ decays, which is a large systematic uncertainty in the interpretation of the $b$-anomalies. Since these contributions are dominated by long-distance effects and are resistant to factorization attempts, we employ the method of light-cone sum rules to compute the relevant hadronic matrix elements. Our calculation extends previous works by considering the full set of the three-particle $B$-meson distribution amplitudes. We provide first numerical results, and discuss qualitatively their impact on the extraction of the Wilson coefficient $C_9$.
12:30 PM
Lunch break
Lunch break
12:30 PM - 2:00 PM
2:00 PM
Vcb
-
Christoph Schwanda
Vcb
Christoph Schwanda
2:00 PM - 2:30 PM
Room: E.0.11
2:30 PM
CP violation in beauty decays with LHCb
-
Mirco Dorigo
CP violation in beauty decays with LHCb
Mirco Dorigo
2:30 PM - 3:00 PM
Room: E.0.11
Precision measurements of CP violating observables in b hadron decays are powerful probes to search for physics effects beyond the Standard Model. The most recent results on CP violation in the decay, mixing and interference of b hadrons obtained by the LHCb Collaboration will be presented, with particular focus on results obtained exploiting the data collected during the Run 2 of LHC. These results represent the world's best constraints, some of which are world-first measurements, of the CP violating phase phi_s.
3:00 PM
High-pT Signatures in Vector-Leptoquark Models
-
Michael Baker
(University of Zurich)
High-pT Signatures in Vector-Leptoquark Models
Michael Baker
(University of Zurich)
3:00 PM - 3:30 PM
Room: E.0.11
We present a detailed analysis of the collider signatures of TeV-scale massive vector bosons motivated by the hints of lepton flavour non-universality observed in $B$-meson decays. We analyse three representations that necessarily appear together in a large class of ultraviolet-complete models: a colour-singlet ($Z'$), a colour-triplet (the $U_1$ leptoquark), and a colour octet ($G'$). Under general assumptions for the interactions of these exotic states with Standard Model fields, including in particular possible right-handed and flavour off-diagonal couplings or the $U_1$, we derive a series of stringent bounds on masses and couplings that constrain a wide range of explicit new-physics models.
3:30 PM
Coffee break
Coffee break
3:30 PM - 4:00 PM
Room: E.0.11
4:00 PM
Anomalies in semileptonic B decays (LHCb)
-
Annarita Buonaura
Anomalies in semileptonic B decays (LHCb)
Annarita Buonaura
4:00 PM - 4:30 PM
Room: E.0.11
Rare decays are powerful probes for Physics beyond the Standard Model (SM), as new particles can have a large impact on physics observables. Recent results on lepton universality tests and measurements of branching fractions and angular distributions of rare b->sll decays have shown tensions with the SM predictions. A review of the latest lepton universality tests in semileptonic b →clν transitions is reported.
4:30 PM
New Physics in b → c τ ν: From R(D), R(D*) to Polarisation Observables, B_c → τ ν, and Λ_b → Λ_c τ ν
-
Monika Blanke
(Karlsruhe Institute of Technology)
New Physics in b → c τ ν: From R(D), R(D*) to Polarisation Observables, B_c → τ ν, and Λ_b → Λ_c τ ν
Monika Blanke
(Karlsruhe Institute of Technology)
4:30 PM - 5:00 PM
Room: E.0.11
In this talk I review the status of new physics in b→cτν transitions in the EFT framework of dimension-six operators, including the very recent Belle results. The fit results, including the recent measurement of FL(D*), are presented for all one- and two-dimensional scenarios resulting from the tree level exchange of a single new particle. Particular emphasis is put on the constraint from the Bc→τν decay rate. I introduce a sum rule for the branching ratios of B→Dτν, B→D*τν and Λb→Λc τν which holds for any NP contribution to the Wilson coefficients and predicts an enhancement of the latter decay w.r.t. the Standard Model. I also discuss correlations between the polarisation observables in B→Dτν, B→D*τν and their model-discriminating prospects.