Physics prospects at the Belle II experiment

Urquijo, P.

doi:10.1016/j.nuclphysbps.2015.04.004

Cited by 16 publications

(15 citation statements)

References 74 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Belle II [69] expects to surpass by a factor of ∼50 the total statistics collected by the B-factories. As the experimental environments will be very similar, we just scale the current uncertainties by this statistical factor.…”

Section: B(kmentioning

confidence: 99%

“…The Belle II experiment [69], currently in the stages of construction and commissioning, will operate in an experimental environment very similar to the one of the BaBar and Belle experiments. Therefore Belle II has the potential for studying all modes accessed by the B-factories, with expected sensitivities that should scale in proportion to its expected total luminosity (i.e., 50 ab −1 ).…”

Section: Prospects For Lhcb and Belle IImentioning

confidence: 99%

See 1 more Smart Citation

Disentangling weak and strong interactions in $$B\rightarrow K^{*}(\rightarrow K\pi )\pi $$ B → K ∗

Descotes-Genon¹,

Ocariz²,

Pérez³

2017

Eur. Phys. J. C

View full text Add to dashboard Cite

Dalitz-plot analyses of B → K ππ decays provide direct access to decay amplitudes, and thereby weak and strong phases can be disentangled by resolving the interference patterns in phase space between intermediate resonant states. A phenomenological isospin analysis of B → K * (→ K π)π decay amplitudes is presented exploiting available amplitude analyses performed at the BaBar, Belle and LHCb experiments. A first application consists in constraining the CKM parameters thanks to an external hadronic input. A method, proposed some time ago by two different groups and relying on a bound on the electroweak penguin contribution, is shown to lack the desired robustness and accuracy, and we propose a more alluring alternative using a bound on the annihilation contribution. A second application consists in extracting information on hadronic amplitudes assuming the values of the CKM parameters from a global fit to quark flavour data. The current data yields several solutions, which do not fully support the hierarchy of hadronic amplitudes usually expected from theoretical arguments (colour suppression, suppression of electroweak penguins), as illustrated from computations within QCD factorisation. Some prospects concerning the impact of future measurements at LHCb and Belle II are also presented. Results are obtained with the CKMfitter analysis package, featuring the frequentist statistical approach and using the Rfit scheme to handle theoretical uncertainties.

show abstract

Section: B(kmentioning

confidence: 99%

Section: Prospects For Lhcb and Belle IImentioning

confidence: 99%

Disentangling weak and strong interactions in $$B\rightarrow K^{*}(\rightarrow K\pi )\pi $$ B → K ∗

Descotes-Genon¹,

Ocariz²,

Pérez³

2017

Eur. Phys. J. C

View full text Add to dashboard Cite

show abstract

“…They are expected to publish the results of their ongoing B s → Klν decay study within the coming year [6]. The Belle II experiment [7], where the e þ e − collisions provide a cleaner environment than at the LHC, also expects to study this decay. The current plans are that Belle II will collect about 50 ab −1 at the ϒð4SÞ resonance (which decays predominantly into B-meson pairs), and 5 ab −1 at the ϒð5SÞ, a rich source of B s -meson pairs [7].…”

Section: Introductionmentioning

confidence: 99%

“…The Belle II experiment [7], where the e þ e − collisions provide a cleaner environment than at the LHC, also expects to study this decay. The current plans are that Belle II will collect about 50 ab −1 at the ϒð4SÞ resonance (which decays predominantly into B-meson pairs), and 5 ab −1 at the ϒð5SÞ, a rich source of B s -meson pairs [7]. Thus, we do not expect the experimental accuracy for Belle II's future measurement of B s → Klν decay rates to rival that of their expected results for B → πlν, but we do expect this decay to be studied by Belle II.…”

Section: Introductionmentioning

confidence: 99%

Bs→Kℓν decay from lattice QCD

Collaborations

2019

Phys. Rev. D

View full text Add to dashboard Cite

We use lattice QCD to calculate the form factors f þ ðq 2 Þ and f 0 ðq 2 Þ for the semileptonic decay B s → Klν. Our calculation uses six MILC asqtad 2 þ 1 flavor gauge-field ensembles with three lattice spacings. At the smallest and largest lattice spacing the light-quark sea mass is set to 1=10 the strange-quark mass. At the intermediate lattice spacing, we use four values for the light-quark sea mass ranging from 1=5 to 1=20 of the strange-quark mass. We use the asqtad improved staggered action for the light valence quarks, and the clover action with the Fermilab interpolation for the heavy valence bottom quark. We use SU(2) hard-kaon heavy-meson rooted staggered chiral perturbation theory to take the chiral-continuum limit. A functional z expansion is used to extend the form factors to the full kinematic range. We present predictions for the differential decay rate for both B s → Kμν and B s → Kτν. We also present results for the forward-backward asymmetry, the lepton polarization asymmetry, ratios of the scalar and vector form factors for the decays B s → Klν and B s → D s lν. Our results, together with future experimental measurements, can be used to determine the magnitude of the Cabibbo-Kobayashi-Maskawa matrix element jV ub j.

show abstract

“…The Belle II experiment was conceived as a successor to increase the measurement sensitivity by an order of magnitude and to search for signs of new physics in rarer processes. The data set needed to achieve these physics goals requires an integrated luminosity of 50 ab −1 [2]. The design peak luminosity 8×10 35 cm −2 s −1 , 40 times larger than the world record achieved by its predecessor KEKB, makes it necessary to upgrade and modernize both the existing accelerator (KEKB) and the detector (Belle).…”

Section: Superkekbmentioning

confidence: 99%

The Belle II Experiment

Mariñas¹

2016

Proceedings of XXIV International Workshop on Deep-Inelastic Scattering and Related Subjects — PoS(DIS2016)

View full text Add to dashboard Cite

The Belle II experiment at the asymmetric e + e − SuperKEKB collider is a major upgrade of the Belle experiment, which ran at the KEKB collider at the KEK laboratory in Japan. The design luminosity of SuperKEKB is 8×10 35 cm −2 s −1 , which is about 40 times higher than that of KEKB. Commissioning of the main ring of SuperKEKB has started in February 2016 and Belle II is expected to accumulate an integrated luminosity of 50 ab −1 well within the next decade. The experiment will focus on searches for new physics beyond the Standard Model via high precision measurements of heavy flavor and searches for rare signals. To reach these goals, the accelerator, detector, electronics, software, and computing systems are all being substantially upgraded. In this talk we present the status of the accelerator and of the different Belle II sub-detector upgrades.

show abstract

Physics prospects at the Belle II experiment

Cited by 16 publications

References 74 publications

Disentangling weak and strong interactions in $$B\rightarrow K^{*}(\rightarrow K\pi )\pi $$ B → K ∗

Disentangling weak and strong interactions in $$B\rightarrow K^{*}(\rightarrow K\pi )\pi $$ B → K ∗

Bs→Kℓν decay from lattice QCD

The Belle II Experiment

Contact Info

Product

Resources

About