scholarly journals Penguin contribution to the width difference and CP asymmetry in Bq−B¯q mixing at order αs2Nf

2020 ◽  
Vol 102 (3) ◽  
Author(s):  
Hrachia M. Asatrian ◽  
Hrachya H. Asatryan ◽  
Artyom Hovhannisyan ◽  
Ulrich Nierste ◽  
Sergey Tumasyan ◽  
...  
Keyword(s):  
Cp Asymmetry ◽  
Penguin Contribution ◽  
Width Difference

scholarly journals Two-loop QCD penguin contribution to the width difference in Bs − $$ {\overline{B}}_s $$ mixing

2021 ◽  
Vol 2021 (7) ◽  
Author(s):  
Marvin Gerlach ◽  
Ulrich Nierste ◽  
Vladyslav Shtabovenko ◽  
Matthias Steinhauser
Keyword(s):  
Experimental Data ◽  
Heavy Quark ◽  
Experimental Error ◽  
Second Order ◽  
Penguin Contribution ◽  
Width Difference ◽  
Penguin Operator ◽  
Precise Experimental Data

Abstract We consider two-loop QCD corrections to the element $$ {\Gamma}_{12}^q $$ Γ 12 q of the decay matrix in Bq−$$ {\overline{B}}_q $$ B ¯ q mixing, q = d, s, in the leading power of the Heavy Quark Expansion. The calculated contributions involve one current-current and one penguin operator and constitute the next step towards a theory prediction for the width difference ∆Γs matching the precise experimental data. We present compact analytic results for all matching coefficients in an expansion in mc/mb up to second order. Our new corrections are comparable in size to the current experimental error and slightly increase ∆Γs.

scholarly journals Flavoured CP-asymmetry at the effective neutrino mass floor

2021 ◽  
Vol 962 ◽  
pp. 115268
Author(s):  
Nimmala Narendra ◽  
Narendra Sahu ◽  
S. Uma Sankar
Keyword(s):  
Neutrino Mass ◽  
Cp Asymmetry

scholarly journals On Partial Compositeness and the CP asymmetry in charm decays

2013 ◽  
Vol 867 (2) ◽  
pp. 394-428 ◽  
Author(s):  
Boaz Keren-Zur ◽  
Paolo Lodone ◽  
Marco Nardecchia ◽  
Duccio Pappadopulo ◽  
Riccardo Rattazzi ◽  
...  
Keyword(s):  
Cp Asymmetry ◽  
Charm Decays ◽  
Partial Compositeness

scholarly journals Constraining extensions of the quark sector with the CP asymmetry in B→ψKS

1999 ◽  
Vol 1999 (09) ◽  
pp. 013-013 ◽  
Author(s):  
Galit Eyal ◽  
Yosef Nir
Keyword(s):  
Cp Asymmetry ◽  
Quark Sector

Ambient temperature does not affect the tactile sensitivity of mystacial vibrissae in harbour seals.

1998 ◽  
Vol 201 (22) ◽  
pp. 3023-3029 ◽  
Author(s):  
G Dehnhardt ◽  
B Mauck ◽  
H Hyvärinen
Keyword(s):  
Ambient Temperature ◽  
Thermal Emission ◽  
Normal Skin ◽  
Cold Season ◽  
Cooling Power ◽  
Difference Threshold ◽  
Tactile Sensitivity ◽  
Camera System ◽  
Width Difference ◽  
Harbour Seals

Vibrissae provide pinnipeds with tactile information primarily in the aquatic environment, which is characterized by its high thermal conductivity and large potential cooling power. Since studies of thermal effects on human tactile sensitivity have revealed that cooling below normal skin temperature impairs sensitivity, the present study investigates the tactile sensitivity of the vibrissal system of harbour seals at varying ambient temperatures. Using plates bearing gratings of alternating grooves and ridges, the texture difference thresholds of two adult seals were determined under water. We took advantage of the natural difference in ambient temperature between summer and winter. Mean water temperature was 1. 2 degreesC during the winter and 22 degreesC during the summer. During the cold season, the thermal status of both seals was examined using an infrared-sensitive camera system. The texture difference threshold of both seals remained the same (0.18 mm groove width difference) under both test conditions. The thermographic examination revealed that the skin areas of the head where the mystacial and supraorbital vibrissae are located show a substantially higher degree of thermal emission than do adjacent skin areas. This suggests that, in the vibrissal follicles of harbour seals, no vasoconstriction occurs during cold acclimation, so that the appropriate operating temperature for the mechanoreceptors is maintained.

scholarly journals Measurement ofCPviolation and theBs0meson decay width difference withBs0→J/ψK+K−andBs0→J/ψπ+π−decays

2013 ◽  
Vol 87 (11) ◽  
Author(s):  
R. Aaij ◽  
C. Abellan Beteta ◽  
B. Adeva ◽  
M. Adinolfi ◽  
C. Adrover ◽  
...  
Keyword(s):  
Decay Width ◽  
Width Difference

scholarly journals Measurement of the branching fraction and CP asymmetry in B0→π0π0 decays, and an improved constraint on ϕ2

2017 ◽  
Vol 96 (3) ◽  
Author(s):  
T. Julius ◽  
M. E. Sevior ◽  
G. B. Mohanty ◽  
I. Adachi ◽  
H. Aihara ◽  
...  
Keyword(s):  
Branching Fraction ◽  
Cp Asymmetry

A study of CP asymmetry inB 0 decay at ψ(4S)

1987 ◽  
Vol 36 (3) ◽  
pp. 503-506 ◽  
Author(s):  
I. Dunietz ◽  
T. Nakada
Keyword(s):  
Cp Asymmetry

Prospects for the Measurement of the CP Asymmetry inB Meson Decays

1999 ◽  
Vol 47 (7-8) ◽  
pp. 707-853 ◽  
Author(s):  
Roland Waldi
Keyword(s):  
Cp Asymmetry ◽  
Meson Decays
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