Zobrazeno 1 - 10
of 97
pro vyhledávání: '"Kagan, Alexander L."'
Autor:
Kagan, Alexander L., Silvestrini, Luca
Publikováno v:
Phys. Rev. D 103, 053008 (2021)
CP violation (CPV) in $D^0-\overline{D^0}$ mixing is described in terms of the dispersive and absorptive `weak phases' $\phi_f^M$ and $\phi_f^\Gamma$. They parametrize CPV originating from the interference of $D^0$ decays with and without dispersive
Externí odkaz:
http://arxiv.org/abs/2001.07207
Publikováno v:
Phys. Rev. D 95, 035038 (2017)
We explore an electroweak symmetry breaking (EWSB) scenario based on the mixture of a fundamental Higgs doublet and an SU(4)/Sp(4) composite pseudo-Nambu-Goldstone doublet -- a particular manifestation of bosonic technicolor/induced EWSB. Taking the
Externí odkaz:
http://arxiv.org/abs/1609.05883
Autor:
Altmannshofer, Wolfgang, Galloway, Jamison, Gori, Stefania, Kagan, Alexander L., Martin, Adam, Zupan, Jure
Publikováno v:
Phys. Rev. D 93, 095015 (2016)
We explore several perturbative scenarios in which the di-photon excess at 750 GeV can potentially be explained: a scalar singlet, a two Higgs doublet model (2HDM), a 2HDM with an extra singlet, and the decays of heavier resonances, both vector and s
Externí odkaz:
http://arxiv.org/abs/1512.07616
Publikováno v:
Phys. Rev. D 93, 031301 (2016)
A discovery of the flavor violating decay h --> tau mu at the LHC would require extra sources of electroweak symmetry breaking (EWSB) beyond the Higgs in order to reconcile it with the bounds from tau --> mu gamma, barring fine-tuned cancellations. I
Externí odkaz:
http://arxiv.org/abs/1507.07927
Publikováno v:
Phys. Rev. D 91, 095009 (2015)
We show that a new strongly interacting sector can produce large enhancements of the t-tbar asymmetries at the Tevatron. The Standard Model is extended by a new vector-like flavor triplet of fermions and one heavy scalar, all charged under a hypercol
Externí odkaz:
http://arxiv.org/abs/1407.8188
Autor:
Kagan, Alexander L., Perez, Gilad, Petriello, Frank, Soreq, Yotam, Stoynev, Stoyan, Zupan, Jure
Publikováno v:
Phys. Rev. Lett. 114, 101802 (2015)
We show that both flavor-conserving and flavor-violating Yukawa couplings of the Higgs boson to first- and second-generation quarks can be probed by measuring rare decays of the form h->MV, where M denotes a vector meson and V indicates either gamma,
Externí odkaz:
http://arxiv.org/abs/1406.1722
The anomalous forward-backward asymmetry (A_FB) in t tbar production at the Tevatron is in apparent contradiction with the t tbar charge asymmetry (A_C) measurements at the LHC, which agree well with the standard model predictions. We argue that asso
Externí odkaz:
http://arxiv.org/abs/1209.4872
We devise tests for a new physics origin of the recently measured direct CP violation in singly Cabibbo suppressed D decays. The tests take the form of sum rules for the CP asymmetries in various D decays. They are based on the fact that within the s
Externí odkaz:
http://arxiv.org/abs/1204.3557
A long-standing puzzle in charm physics is the large difference between the D0 -> K+ K- and D0 -> pi+ pi- decay rates. Recently, the LHCb and CDF collaborations reported a surprisingly large difference between the direct CP asymmetries, Delta A_CP, i
Externí odkaz:
http://arxiv.org/abs/1203.6659
Publikováno v:
Phys.Rev. D86 (2012) 014023
The first experimental evidence for direct CP violation in charm-quark decays has recently been presented by the LHCb collaboration in the difference between the D -> K+ K- and D -> pi+ pi- time-integrated CP asymmetries. We estimate the size of the
Externí odkaz:
http://arxiv.org/abs/1111.5000