B Decays and Cp Violation

Neubert, Matthias

doi:10.1142/s0217751x96001966

Cited by 131 publications

(114 citation statements)

References 70 publications

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108

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“…Throughout, we work to leading order in the heavy-quark expansion, omitting corrections of order (Λ/m b ) 2 , which have been discussed by previous authors (see, e.g., [6,7,8,9,10,11]). The QCD corrections are calculated including terms that do not contribute in the limit of vanishing lepton mass, so that our results allow treating the case of decays into τ leptons.…”

Section: Jhep06(1999)017mentioning

confidence: 99%

“…They also serve as probes for physics beyond the Standard Model, such as an extended Higgs sector [2] or right-handed weak couplings of the b quark [3,4]. The total decay rates for these processes can be calculated in a systematic expansion in inverse powers of m b [5,6,7,8,9,10,11]. The same formalism can also be applied to calculate differential decay distributions, provided a sufficient sampling of hadronic final states is ensured by kinematics.…”

Section: Introductionmentioning

confidence: 99%

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B→X_ulbar nu_l decay distributions to order α_s

Fazio

Neubert

1999

J. High Energy Phys.

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178

255

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An analytic result for the O(α s ) corrections to the triple differential B → X u lν l decay rate is presented, to leading order in the heavy-quark expansion. This is relevant for computing partially integrated decay distributions with arbitrary cuts on kinematic variables. Several double and single differential distributions are derived, most of which generalize known results. In particular, an analytic result for the O(α s ) corrections to the hadronic invariant mass spectrum is presented. The effects of Fermi motion, which are important for the description of decay spectra close to infrared sensitive regions, are included. The behaviour of perturbation theory in the region of time-like momenta is also investigated.

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Section: Jhep06(1999)017mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

B→X_ulbar nu_l decay distributions to order α_s

Fazio

Neubert

1999

J. High Energy Phys.

Self Cite

178

255

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“…According to a recent review by M. Neubert [10], R b = 0.35 ± 0.09. The value of R t cannot be extracted from experimental data alone.…”

mentioning

confidence: 99%

Cabibbo mixing and the search forCPviolation in the aspon model

Frampton

Glashow

1997

Phys. Rev. D

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“…would provide evidence for CP violation in mixing, but unfortunately such effects are thought to be small (O(10 −2 )) [16].…”

Section: Cp Violation In Mixingmentioning

confidence: 99%

Design and Application of the Reconstruction Software for the BaBar Calorimeter

Strother¹,

Coll.²

2006

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The BaBar high energy physics experiment will be in operation at the PEP-II asymmetric e + e − collider in Spring 1999. The primary purpose of the experiment is the investigation of CP violation in the neutral B meson system. The electromagnetic calorimeter forms a central part of the experiment and new techniques are employed in data acquisition and reconstruction software to maximise the capability of this device.The use of a matched digital filter in the feature extraction in the front end electronics is presented. The performance of the filter in the presence of the expected high levels of soft photon background from the machine is evaluated.The high luminosity of the PEP-II machine and the demands on the precision of the calorimeter require reliable software that allows for increased physics capability. BaBar has selected C++ as its primary programming language and object oriented analysis and design as its coding paradigm. The application of this technology to the reconstruction software for the calorimeter is presented. The design of the systems for clustering, cluster division, track matching, particle identification and global calibration is discussed with emphasis on the provisions in the design for increased physics capability as levels of understanding of the detector increase.The CP violating channel B o → J/ΨK o s has been studied in the two lepton, two π 0 final state. The contribution of this channel to the evaluation of the angle sin 2β of the unitarity triangle is compared to that from the charged pion final state. An error of 0.34 on this quantity is expected after 1 year of running at design luminosity.

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B Decays and Cp Violation

Cited by 131 publications

References 70 publications

B→X_ulbar nu_l decay distributions to order α_s

B→X_ulbar nu_l decay distributions to order α_s

Cabibbo mixing and the search forCPviolation in the aspon model

Design and Application of the Reconstruction Software for the BaBar Calorimeter

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B Decays and Cp Violation

Cited by 131 publications

References 70 publications

B→Xulbar nul decay distributions to order αs

B→Xulbar nul decay distributions to order αs

Cabibbo mixing and the search forCPviolation in the aspon model

Design and Application of the Reconstruction Software for the BaBar Calorimeter

Contact Info

Product

Resources

About

B→X_ulbar nu_l decay distributions to order α_s

B→X_ulbar nu_l decay distributions to order α_s