Zobrazeno 1 - 10
of 213
pro vyhledávání: '"Dobrescu, Bogdan A."'
Autor:
Dobrescu, Bogdan A.
Scalar particles that couple to two up quarks may be produced at the LHC even if they are ultraheavy, in the $8-10$ TeV mass range. A renormalizable theory that includes a diquark particle of this type ($S_{uu}$), two vectorlike quarks ($\chi_1, \chi
Externí odkaz:
http://arxiv.org/abs/2411.04121
We study the properties of vectorlike fermions that have the same gauge charges as the Standard Model lepton doublets, but opposite lepton number. These antileptons undergo decays mediated by heavier scalar leptoquarks, while the symmetries of this r
Externí odkaz:
http://arxiv.org/abs/2312.09189
Publikováno v:
JHEP 07 (2023) 079
We study a renormalizable theory that includes a heavy weak-singlet vectorlike lepton, $\tau^\prime$, that decays into a pseudoscalar boson and a tau lepton. We show that this can be the dominant decay mode of $\tau^\prime$ provided the pseudoscalar
Externí odkaz:
http://arxiv.org/abs/2304.08509
Autor:
Assi, Benoît, Dobrescu, Bogdan A.
Within a chiral $SU(15)$ gauge theory in which the Standard Model fermions are bound states of massless preons, we show that proton-decay operators are likely induced at the compositeness scale, $\Lambda_{\rm pre}$. Our estimate of the limit imposed
Externí odkaz:
http://arxiv.org/abs/2211.02211
Autor:
Goudzovski, Evgueni, Redigolo, Diego, Tobioka, Kohsaku, Zupan, Jure, Alonso-Alvarez, Gonzalo, Alves, Daniele S. M., Bansal, Saurabh, Bauer, Martin, Brod, Joachim, Chobanova, Veronika, D'Ambrosio, Giancarlo, Datta, Alakabha, Dery, Avital, Dettori, Francesco, Dobrescu, Bogdan A., Dobrich, Babette, Egana-Ugrinovic, Daniel, Elor, Gilly, Escudero, Miguel, Fabbrichesi, Marco, Fornal, Bartosz, Fox, Patrick J., Gabrielli, Emidio, Geng, Li-Sheng, Gligorov, Vladimir V., Gorbahn, Martin, Gori, Stefania, Grinstein, Benjamin, Grossman, Yuval, Guadagnoli, Diego, Homiller, Samuel, Hostert, Matheus, Kelly, Kevin J., Kitahara, Teppei, Knapen, Simon, Krnjaic, Gordan, Kupsc, Andrzej, Kvedaraite, Sandra, Lanfranchi, Gaia, Marfatia, Danny, Camalich, Jorge Martin, Santos, Diego Martinez, Massri, Karim, Mead, Patrick, Moulson, Matthew, Nanjo, Hajime, Neubert, Matthias, Pospelov, Maxim, Renner, Sophie, Schacht, Stefan, Schnubel, Marvin, Shi, Rui-Xiang, Shuve, Brian, Spadaro, Tommaso, Soreq, Yotam, Stamou, Emmanuel, Sumensari, Olcyr, Tammaro, Michele, Terol-Calvo, Jorge, Thamm, Andrea, Tung, Yu-Chen, Wang, Dayong, Yamamoto, Kei, Ziegler, Robert
Rare meson decays are among the most sensitive probes of both heavy and light new physics. Among them, new physics searches using kaons benefit from their small total decay widths and the availability of very large datasets. On the other hand, useful
Externí odkaz:
http://arxiv.org/abs/2201.07805
Autor:
Dobrescu, Bogdan A.
In the chiral $SU(15)$ gauge theory presented here, the quarks and leptons are bound states ("prebaryons") of massless preons. The Standard Model charges of the preons imply 3 generations of quarks and leptons, plus some vectorlike fermions lighter t
Externí odkaz:
http://arxiv.org/abs/2112.15132
Autor:
Dobrescu, Bogdan A., Yu, Felix
Publikováno v:
Phys.Rev.D 109 (2024) 3, 035004
An insightful way of presenting the LHC limits on dijet resonances is the coupling-mass plot for a $Z'$ boson that has flavor-independent quark interactions. This also illustrates the comparison of low-mass LHC sensitivity with constraints on the fla
Externí odkaz:
http://arxiv.org/abs/2112.05392
Autor:
Dobrescu, Bogdan A., Fox, Patrick J.
We solve Diophantine equations of the type $ \, a \, (x^3 + y^3 + z^3 ) = (x + y + z)^3$, where $x,y,z$ are integer variables, and the coefficient $a \neq 0$ is rational. We show that there are infinite families of such equations, including those whe
Externí odkaz:
http://arxiv.org/abs/2012.04139
We construct chiral theories with the smallest number $n_\chi$ of Weyl fermions that form an anomaly-free set under various Abelian gauge groups. For the $U(1)$ group, where $n_\chi = 5$, we show that the general solution to the anomaly equations is
Externí odkaz:
http://arxiv.org/abs/2001.11991
Autor:
Dobrescu, Bogdan A.
The usual range of new particle masses, up to a few TeV, searched for at the LHC may be substantially extended if ultraheavy diquark particles exist. A diquark scalar, $S_{uu}$, that interacts perturbatively with two up quarks may be as heavy as 10 T
Externí odkaz:
http://arxiv.org/abs/1912.13155