A
bstract
The time-dependent
CP
asymmetry in
B
0
→
K
res
γ → π
+
π
−
K
S
γ is sensitive to the photon polarisation in the quark level process
b
→
s
γ. While this polarisation is predominantly ...left-handed in the standard model, it could be modified by the existence of new physics contributions that may possess different
CP
properties. In this paper, we derive the
CP
violation formulae for
B
0
→
K
res
γ → π
+
π
−
K
S
γ including the most dominant intermediate states. We propose a new observable that could be measured in a time-dependent amplitude analysis of
B
0
→ π
+
π
−
K
S
γ decays, providing a stringent contraint on the photon polarisation. We discuss the future prospects for obtaining such constraints from measurements at Belle II and LHCb.
A
bstract
The time-dependent
CP
asymmetry in
B
0
→
K
res
γ → π
+
π
−
K
S
γ is sensitive to the photon polarisation in the quark level process
b
→
s
γ. While this polarisation is predominantly ...left-handed in the standard model, it could be modified by the existence of new physics contributions that may possess different
CP
properties. In this paper, we derive the
CP
violation formulae for
B
0
→
K
res
γ → π
+
π
−
K
S
γ including the most dominant intermediate states. We propose a new observable that could be measured in a time-dependent amplitude analysis of
B
0
→ π
+
π
−
K
S
γ decays, providing a stringent contraint on the photon polarisation. We discuss the future prospects for obtaining such constraints from measurements at Belle II and LHCb.
The time-dependent CP asymmetry in B0 → Kresγ → π+π−KSγ is sensitive to the photon polarisation in the quark level process b → sγ. While this polarisation is predominantly left-handed in the standard ...model, it could be modified by the existence of new physics contributions that may possess different CP properties. In this paper, we derive the CP violation formulae for B0 → Kresγ → π+π−KSγ including the most dominant intermediate states. We propose a new observable that could be measured in a time-dependent amplitude analysis of B0 → π+π−KSγ decays, providing a stringent contraint on the photon polarisation. We discuss the future prospects for obtaining such constraints from measurements at Belle II and LHCb.
Abstract The time-dependent CP asymmetry in B 0 → K resγ → π+π− K Sγ is sensitive to the photon polarisation in the quark level process b → sγ. While this polarisation is predominantly left-handed in ...the standard model, it could be modified by the existence of new physics contributions that may possess different CP properties. In this paper, we derive the CP violation formulae for B 0 → K resγ → π+π− K Sγ including the most dominant intermediate states. We propose a new observable that could be measured in a time-dependent amplitude analysis of B 0 → π+π− K Sγ decays, providing a stringent contraint on the photon polarisation. We discuss the future prospects for obtaining such constraints from measurements at Belle II and LHCb.
Abstract
Early life adverse conditions can have major consequences on an individual’s life history traits. Oxidative stress has been hypothesized to be one main mechanism underlying the negative ...consequences of early life adverse conditions. To test this hypothesis, we restricted the food availability of Seba’s short-tailed bat (Carollia perspicillata) mothers of unweaned pups for 10 days, followed by ad libitum provisioning. We also had a control, unrestricted group. We explored the morphological consequences of dietary restriction during early life by measuring growth rate. We also measured four markers of blood oxidative balance during growth. We assessed the level of cortisol, and its inactive form cortisone, in the hair of the pups at the end of growth. Finally, we monitored survival during the first year. Food restriction triggered a slowdown in growth followed by catch-up growth when ad libitum feeding was restored which did not lead to full compensation in size or mass compared to control individuals. We found that higher growth rate was associated with elevated oxidative damage, suggesting an oxidative cost to growth. However, we found no clear evidence for physiological costs specific to the catch-up growth. Survival after a year was not impacted by the treatment, the oxidative balance or the level of glucocorticoids at the end of growth. In conclusion, our results show that individuals were able to efficiently mitigate the short-term consequences of adverse early life conditions. However, consequences might arise in the long-term, and could impact reproductive success or lifespan.
Lay Summary
Early life adverse conditions can have life-long consequences, but the mechanisms underlying such changes remain poorly understood. Using an experimental approach, we monitored the morphological consequences of early life adversity on a long-lived mammal, the Seba’s short-tailed bats. We explored whether physiological stress and oxidative stress could provide a mechanism explaining the expected consequences of a bad start. Interestingly, these fruit-eating bats were able to efficiently mitigate the short-term consequences of a bad start.
ResumeCet article traite de l'adaptation nécessaire du droit à l'évolution des pratiques terroristes, en se centrant tout particulièrement sur la menace du terrorisme islamique sur le territoire ...national. Les attentats du 13 novembre 2015 furent à ce titre l'événement déclencheur d'une adaptation de l'état d'urgence. Le traitement du terrorisme islamiste ne se réduisant pas à une question d'emploi des forces, l'article détaille les dispositifs légaux avant les attentats de novembre 2015, puis leur évolution par après. Cette contribution permet d'esquisser les futures mesures (coercition, prévention, endiguement, efficacité) à envisager dans le contexte d'un retour potentiel des combattants de nationalité française encore présents sur le théâtre du Levant.
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