IceCube collaboration has published two papers on ultrahigh energy neutrinos observation, recentl... more IceCube collaboration has published two papers on ultrahigh energy neutrinos observation, recently. They have used the data collected in two years in their first publication, which reveals observation of 2 PeV energy neutrino events. The second publication of the collaboration including more data has also confirmed main features of the former paper. In literature, various interpretations of the IceCube data have been proposed. In this study, it is shown that PeV energy neutrino events observed by the IceCube collaboration can be interpreted as resonance production of color octet neutrinos with masses in 500–800 GeV range.
Production of heavy Majorana neutrino $N_{e}$ predicted by left-right symmetric extension of the ... more Production of heavy Majorana neutrino $N_{e}$ predicted by left-right symmetric extension of the Standard Model at future {\normalsize TeV} scale $ep$ colliders have been considered. In order to estimate potential of $ep$ colliders for $N_{e}$ search we consider back-groundless process $e^{-}p\rightarrow e^{+}X$ which is consequence of Majorana nature of $N_{e}$. It is shown that {\normalsize linac-LHC} and {\normalsize linac-FCC} based $ep$ colliders will cover much wider regions of $N_{e}$ and $W_{R}$ masses than corresponding linear electron-positron colliders.
Understanding of the parton distributions at small x(g) is one of the most important issues for c... more Understanding of the parton distributions at small x(g) is one of the most important issues for clarfiying of the QCD basics. In this paper potential of the LHeC for probing small x(g) region via c ¯ c and b ¯ b production has been investigated. Comparison of the ep and real γ p options of the LHeC clearly show the advantage of γ p collider option. Measurement of x(g) down to 3 × 10 −6 with high statistics, especially at γ p option, seems to be reachable which is two order smaller than HERA coverage.
Resonant production of color octet electron, e8, at the FCC based ep colliders has been analyzed.... more Resonant production of color octet electron, e8, at the FCC based ep colliders has been analyzed. It is shown that e-FCC will cover much a wider region of e8 masses compared to the LHC. Moreover, with highest electron beam energy, e8 search potential of the e-FCC exceeds that of FCC pp collider. If e8 is discovered earlier by the FCC pp collider, e-FCC will give opportunity to handle very important additional information. For example, compositeness scale can be probed up to hundreds TeV region.
Multi-TeV center of mass energy ep colliders based on the Future Circular Collider (FCC) and line... more Multi-TeV center of mass energy ep colliders based on the Future Circular Collider (FCC) and linear colliders (LC) are proposed and corresponding luminosity values are estimated. Parameters of upgraded versions of the FCC are determined to optimize luminosity of electron-proton collisions keeping beam-beam effects in mind. It is shown that Lep ∼ 1032 cm−2s−1 can be achieved with moderate upgrade of the FCC parameters.
Resonant production of leptogluons at the FCC based ep and μp colliders have been analyzed. It is... more Resonant production of leptogluons at the FCC based ep and μp colliders have been analyzed. It is shown that e-FCC and μ-FCC will cover much wider region of e8 and μ8 masses than the LHC. While leptogluons with appropriate masses (if exist) will be discovered earlier by the FCC pp collider, lepton-proton colliders will give opportunity to handle very important additional information. For example, compositeness scale can be probed up to multi-hundred TeV region.
Construction of future electron-positron colliders (or dedicated electron linac) and muon collide... more Construction of future electron-positron colliders (or dedicated electron linac) and muon colliders close to Future Circular Collider will give opportunity to utilize highest energy proton and nucleus beams for lepton-hadron and photon-hadron collisions. In this paper we estimate main parameters of the FCC based ep and μp colliders.
IceCube collaboration has published two papers on ultrahigh energy neutrinos observation, re- cen... more IceCube collaboration has published two papers on ultrahigh energy neutrinos observation, re- cently. They have used the data collected in two years in their first publication, which reveals observation of two PeV energy neutrino events. The second publication of the collaboration in- cluding more data has also confirmed main features of the former paper. In literature, various interpretations of the IceCube data have been proposed. In this study, it is shown that PeV energy neutrino events observed by the IceCube collaboration can be interpreted as resonance production of color octet neutrinos with masses in 500 − 800 GeV range.
IceCube collaboration has published two papers on ultrahigh energy neutrinos observation, recentl... more IceCube collaboration has published two papers on ultrahigh energy neutrinos observation, recently. They have used the data collected in two years in their first publication, which reveals observation of 2 PeV energy neutrino events. The second publication of the collaboration including more data has also confirmed main features of the former paper. In literature, various interpretations of the IceCube data have been proposed. In this study, it is shown that PeV energy neutrino events observed by the IceCube collaboration can be interpreted as resonance production of color octet neutrinos with masses in 500–800 GeV range.
Production of heavy Majorana neutrino $N_{e}$ predicted by left-right symmetric extension of the ... more Production of heavy Majorana neutrino $N_{e}$ predicted by left-right symmetric extension of the Standard Model at future {\normalsize TeV} scale $ep$ colliders have been considered. In order to estimate potential of $ep$ colliders for $N_{e}$ search we consider back-groundless process $e^{-}p\rightarrow e^{+}X$ which is consequence of Majorana nature of $N_{e}$. It is shown that {\normalsize linac-LHC} and {\normalsize linac-FCC} based $ep$ colliders will cover much wider regions of $N_{e}$ and $W_{R}$ masses than corresponding linear electron-positron colliders.
Understanding of the parton distributions at small x(g) is one of the most important issues for c... more Understanding of the parton distributions at small x(g) is one of the most important issues for clarfiying of the QCD basics. In this paper potential of the LHeC for probing small x(g) region via c ¯ c and b ¯ b production has been investigated. Comparison of the ep and real γ p options of the LHeC clearly show the advantage of γ p collider option. Measurement of x(g) down to 3 × 10 −6 with high statistics, especially at γ p option, seems to be reachable which is two order smaller than HERA coverage.
Resonant production of color octet electron, e8, at the FCC based ep colliders has been analyzed.... more Resonant production of color octet electron, e8, at the FCC based ep colliders has been analyzed. It is shown that e-FCC will cover much a wider region of e8 masses compared to the LHC. Moreover, with highest electron beam energy, e8 search potential of the e-FCC exceeds that of FCC pp collider. If e8 is discovered earlier by the FCC pp collider, e-FCC will give opportunity to handle very important additional information. For example, compositeness scale can be probed up to hundreds TeV region.
Multi-TeV center of mass energy ep colliders based on the Future Circular Collider (FCC) and line... more Multi-TeV center of mass energy ep colliders based on the Future Circular Collider (FCC) and linear colliders (LC) are proposed and corresponding luminosity values are estimated. Parameters of upgraded versions of the FCC are determined to optimize luminosity of electron-proton collisions keeping beam-beam effects in mind. It is shown that Lep ∼ 1032 cm−2s−1 can be achieved with moderate upgrade of the FCC parameters.
Resonant production of leptogluons at the FCC based ep and μp colliders have been analyzed. It is... more Resonant production of leptogluons at the FCC based ep and μp colliders have been analyzed. It is shown that e-FCC and μ-FCC will cover much wider region of e8 and μ8 masses than the LHC. While leptogluons with appropriate masses (if exist) will be discovered earlier by the FCC pp collider, lepton-proton colliders will give opportunity to handle very important additional information. For example, compositeness scale can be probed up to multi-hundred TeV region.
Construction of future electron-positron colliders (or dedicated electron linac) and muon collide... more Construction of future electron-positron colliders (or dedicated electron linac) and muon colliders close to Future Circular Collider will give opportunity to utilize highest energy proton and nucleus beams for lepton-hadron and photon-hadron collisions. In this paper we estimate main parameters of the FCC based ep and μp colliders.
IceCube collaboration has published two papers on ultrahigh energy neutrinos observation, re- cen... more IceCube collaboration has published two papers on ultrahigh energy neutrinos observation, re- cently. They have used the data collected in two years in their first publication, which reveals observation of two PeV energy neutrino events. The second publication of the collaboration in- cluding more data has also confirmed main features of the former paper. In literature, various interpretations of the IceCube data have been proposed. In this study, it is shown that PeV energy neutrino events observed by the IceCube collaboration can be interpreted as resonance production of color octet neutrinos with masses in 500 − 800 GeV range.
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