scholarly journals The Belle II experiment: Status and prospects

2018 ◽  
Vol 192 ◽  
pp. 00028
Author(s):  
Alberto Martini
Keyword(s):  
High Precision ◽  
Second Generation ◽  
New Physics ◽  
Precision Measurements ◽  
Matrix Elements ◽  
Vertex Detector ◽  
Ckm Matrix ◽  
Belle Ii ◽  
Belle Experiment ◽  
Flavour Physics

This article aims to describe the Belle II experiment, its status and physics prospects for the next several years. Belle II is situated in Japan, at the KEK laboratory and it is the upgraded version of the Belle experiment. It uses a new collider named SuperKEKB, a second generation of B-factory based on the innovative Nano-Beam scheme technique, which is expected to collect an integrated luminosity of 50 ab-1. Using this amount of data, together with improved detector performances, it will be possible to provide important contributions about several flavour physics topics (i.e. CKM matrix elements, FCNC processes, quarkonium states etc..) through high precision measurements. The main aim of Belle II is to investigate new physics scenarios and validate highly suppressed SM predictions. The experiment is almost completely assembled; it already took the first data without the vertex detector installed while the data taking will start in February 2019.

scholarly journals The Belle II Experiment at the SuperKEKB

2019 ◽  
Vol 218 ◽  
pp. 07003
Author(s):  
Chang-Zheng Yuan
Keyword(s):  
Standard Model ◽  
Precision Measurement ◽  
New Physics ◽  
Beyond The Standard Model ◽  
Heavy Flavor ◽  
High Precision Measurement ◽  
The Standard Model ◽  
The Status ◽  
Belle Ii ◽  
Belle Experiment

Belle II experiment at the SuperKEKB collider is a major upgrade of the Belle experiment at the KEKB asymmetric e+e− collider at the KEK. The experiment will focus on the search for new physics beyond the standard model via high precision measurement of heavy flavor decays and search for rare signals. In this talk, we present the status of the SuperKEKB collider and the Belle II detector.

The Belle II experiment: Status and physics prospects

2019 ◽  
Vol 34 (13n14) ◽  
pp. 1940015 ◽  
Author(s):  
Jing-Ge Shiu
Keyword(s):  
Flavor Physics ◽  
Rare Decay ◽  
New Physics ◽  
Precision Measurements ◽  
Current Status ◽  
Interaction Point ◽  
Text Data ◽  
High Data ◽  
Data Statistics ◽  
Belle Ii

The Belle II experiment at SuperKEKB [Formula: see text] collider, Japan, is aiming at exploring flavor physics in high intensity frontier. The target instantaneous luminosity of SuperKEKB is at [Formula: see text], which is 40 times higher than that at KEKB. The renovated Belle II detectors around the interaction point are expected to collect [Formula: see text] data within 7 years. This gives high data statistics for precision measurements and probing new physics in rare decay studies. The Belle II experiment has successfully recorded the first collision events at SuperKEKB in April 2018, and is ready for physics data taking. This paper will cover the current status of Belle II and highlight its prospects on flavor physics.

scholarly journals The Belle II experiment: status and physics program

2018 ◽  
Vol 191 ◽  
pp. 02010
Author(s):  
Dmitry Matvienko
Keyword(s):  
Standard Model ◽  
New Physics ◽  
Lhcb Experiment ◽  
Physics Program ◽  
Huge Data ◽  
The Standard Model ◽  
Belle Ii ◽  
Flavour Physics

The Belle II experiment at the SuperKEKB asymmetric-energy e+e- collider in Japan aims to search for new physics in the flavour transitions in the quark and lepton sectors. The SuperKEKB accelerator will operate at the target instantaneous luminosity of 8 × 1035 s-1cm2. It requires a substantial upgrade of the detector subsystems which are expected to record 50 ab-1 of data. Such a huge data sample in clean background environment allows for probing signatures of new physics through suppressed flavour physics reactions and cross checks for deviations from the Standard Model measured at the LHCb experiment. Physics data taking at the Belle II experiment successfully started in April 2018.

scholarly journals Implications of unitarity and precision measurements on CKM matrix elements

2007 ◽  
Vol 647 (5-6) ◽  
pp. 394-399 ◽  
Author(s):  
Gulsheen Ahuja ◽  
Manmohan Gupta ◽  
Sanjeev Kumar ◽  
Monika Randhawa
Keyword(s):  
Precision Measurements ◽  
Matrix Elements ◽  
Ckm Matrix ◽  
Ckm Matrix Elements

scholarly journals Alignment for the first precision measurements at Belle II

2020 ◽  
Vol 245 ◽  
pp. 02023
Author(s):  
Tadeas Bilka ◽  
Jesus Abudinen ◽  
Karlheinz Georg Ackermann ◽  
Karol Mateusz Adamczyk ◽  
Patrick Ahlburg ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Cosmic Ray ◽  
Drift Chamber ◽  
Precision Measurements ◽  
Software Framework ◽  
Alignment Method ◽  
Vertex Detector ◽  
Detector Calibration ◽  
Target Performance ◽  
Belle Ii

On March 25th 2019, the Belle II detector recorded the first collisions delivered by the SuperKEKB accelerator. This marked the beginning of the physics run with vertex detector. The vertex detector was aligned initially with cosmic ray tracks without magnetic field simultaneously with the drift chamber. The alignment method is based on Millepede II and the General Broken Lines track model and includes also the muon system or primary vertex position alignment. To control weak modes, we employ sensitive validation tools and various track samples can be used as alignment input, from straight cosmic tracks to mass-constrained decays. With increasing luminosity and experience, the alignment is approaching the target performance, crucial for the first physics analyses in the era of Super-BFactories. We will present the software framework for the detector calibration and alignment, the results from the first physics run and the prospects in view of the experience with the first data.

scholarly journals IMPLICATIONS OF PRECISION MEASUREMENTS ON TEXTURE SPECIFIC FERMION MASS MATRICES

2009 ◽  
Vol 24 (18n19) ◽  
pp. 3462-3468 ◽  
Author(s):  
MANMOHAN GUPTA ◽  
GULSHEEN AHUJA ◽  
ROHIT VERMA
Keyword(s):  
Precision Measurements ◽  
Fermion Mass ◽  
Neutrino Masses ◽  
Matrix Elements ◽  
Specific Mass ◽  
Inverted Hierarchy ◽  
Ckm Matrix ◽  
Zero Mass ◽  
Mass Matrices ◽  
Ckm Matrix Elements

Implications of texture specific mass matrices have been investigated for both quarks and neutrinos. Interestingly, for the case of quarks Fritzsch-like texture 4 zero mass matrices have been found to be compatible with the present precisely known sin 2β as well as other precise CKM matrix elements. In the case of leptonic mass matrices, for both Majorana and Dirac neutrinos we find that for texture 4, 5, 6 zero mass matrices the inverted hierarchy and degenerate scenarios of neutrino masses are ruled out by the present data.

scholarly journals A selection rule for genuine new physics in combined high-precision measurements

1989 ◽  
Vol 314 (2) ◽  
pp. 301-333 ◽  
Author(s):  
F. Boudjema ◽  
F.M. Renard ◽  
C. Verzegnassi
Keyword(s):  
High Precision ◽  
Selection Rule ◽  
New Physics ◽  
Precision Measurements

scholarly journals Precision Higgs couplings in neutral naturalness models: an effective field theory approach

2021 ◽  
Vol 2021 (2) ◽  
Author(s):  
Lucien Heurtier ◽  
Hao-Lin Li ◽  
Huayang Song ◽  
Shufang Su ◽  
Wei Su ◽  
...  
Keyword(s):  
Field Theory ◽  
Effective Field Theory ◽  
Goldstone Boson ◽  
Higgs Sector ◽  
New Physics ◽  
Effective Field ◽  
Precision Measurements ◽  
Global Symmetry ◽  
Theory Approach ◽  
Decay Channels

AbstractThe Higgs sector in neutral naturalness models provides a portal to the hidden sectors, and thus measurements of Higgs couplings at current and future colliders play a central role in constraining the parameter space of the model. We investigate a class of neutral naturalness models, in which the Higgs boson is a pseudo-Goldstone boson from the universal SO(N)/SO(N −1) coset structure. Integrating out the radial mode from the spontaneous global symmetry breaking, we obtain various dimension-six operators in the Standard Model effective field theory, and calculate the low energy Higgs effective potential with radiative corrections included. We perform aχ2fit to the Higgs coupling precision measurements at current and future colliders and show that the new physics scale could be explored up to 2.3 (2.4) TeV without (with) the Higgs invisible decay channels at future Higgs factories. The limits are comparable to the indirect constraints obtained via electroweak precision measurements.

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