Relative Velocity Measurements of Electrons and Gamma Rays at 15 GeV

Guiragossián, Z.G.T.; Rothbart, G. B.; Yearian, M. R.; Gearhart, R.; Murray, Joseph J.

doi:10.1103/physrevlett.34.335

Cited by 41 publications

(37 citation statements)

References 3 publications

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“…Also, putting θ = 0 in eqn. (15) and (16) and replacing u, λ t in (18) with the obtained λ l and u v we find the same form for E l as those from eq. (11) in which θ = 0:…”

Section: The Solving Of Particles Mass Variation Problem In the Galilsupporting

confidence: 66%

Observations Concerning the Mass Variation in a Galilean - Type Relativity

Arghirescu¹

2018

IJHEP

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By an electric charge model of static type, with spherical distribution of field quanta, periodically emitted, and by the Galilean relativity, there are re-obtained the Lorentz's expressions of the speed-depending longitudinal and transversal mass of a charged particle accelerated by a quanta flux pressure, as apparent effect generated by a real decreasing of the values of longitudinal and transversal electric field, E L ∼ γ -3 ; E T ∼ γ -1 , ( · γ = 1/√(1 -v 2 /c 2 ), being re-obtained also the general form of the Doppler-Fizeau effect. The invariance of the Lorentz force expression indicates a relativist variation of the magnetic field induction, in the form: B ∼γ -1 , which explains the experimental result of the Kaufmann-Bucherer experiments. It is proposed a classical expression of mass and charge variation, in the form: m = m o /α; q = q o /α, (α = (1 -v 2 /2c 2 )), which may results as real variation by a significant density of a super-fluid medium of the quantum vacuum containing etherons (m g , s = 10 -60 ÷10 -70 kg) and quantons (m h = h·1/c 2 = 7.37x10 -51 kg), by an relativist etherono-quantonic vortex Γ r (v) which is added to the similar vortex Γ µ (v) of the particle's magnetic moment which is increased with the speed, if the particle's spin is rectangular to its impulse.The explicative model may explain also the photon's energy in correlation with its electromagnetic properties.

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“…Also, putting θ = 0 in eqn. (15) and (16) and replacing u, λ t in (18) with the obtained λ l and u v we find the same form for E l as those from eq. (11) in which θ = 0:…”

Section: The Solving Of Particles Mass Variation Problem In the Galilsupporting

confidence: 66%

Observations Concerning the Mass Variation in a Galilean - Type Relativity

Arghirescu¹

2018

IJHEP

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“…These results, combined with the ones previously 1 Cohen and Glashow mention the possibility of a different loophole in which electrons and photons share with neutrinos "unconventional dispersion relations... such that, in the energy domain of the OPERA experiment, these particles travel with a common velocity" [2]. This would indeed render the OPERA data no longer self-contradictory; however, our understanding is that this is in contradiction with established upper bounds on the speed of multi-GeV electrons [6] and of multi-GeV photons [7]. …”

mentioning

confidence: 60%

Opera Neutrinos and Deformed Special Relativity

et al. 2012

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In a recent study, Cohen and Glashow argue that superluminal neutrinos of the type recently reported by OPERA should be affected by anomalous Cherenkov-like processes. This causes them to loose much of their energy before reaching the OPERA detectors. Related concerns were reported also by Gonzalez-Mestres, Bi et al, and Cowsik et al, who argued that pions cannot decay to superluminal neutrinos over part of the energy range studied by OPERA. We observe here that these arguments are set within a framework in which Lorentz symmetry is broken, by the presence of a preferred frame. We further show that these anomalous processes are forbidden if Lorentz symmetry is instead "deformed", preserving the relativity of inertial frames. These deformations add non-linear terms to energy momentum relations, conservation laws and Lorentz transformations in a way that is consistent with the relativity of inertial observers.The OPERA collaboration recently reported [1] evidence of superluminal behavior for µ neutrinos with energies of a few tens of GeVs: v − 1 ≃ 2.4 · 10 −5 , with a significance of six standard deviations (we use units such that the speed of light is c = 1). As usual in science, when a particularly striking experimental result is first reported, the most likely hypothesis is that some unknown bias or source of uncertainty affects these OPERA data. However, the result would be of such potential importance that it behoves us to at least investigate what is the second most likely hypothesis that is consistent with all the relevant data, including OPERA, and gives a reasonable path for physics to go ahead. In the event that the OPERA data is right, we must, by the development of such an hypothesis, come to understand special relativity as an approximation to deeper physics. This is of no small importance because a particular hypothesis that can explain all the relevant data can serve to predict other experiments. These predictions, if confirmed, would strengthen the case that there really are departures from special relativity.However, a recent letter by Cohen and Glashow [2] appears to indicate that there cannot be such a second hypothesis, since it claims that the OPERA results are self-contradictory. Cohen and Glashow argue that neutrinos in OPERA's CNGS beam, if superluminal as described in Ref.[1], would loose much of their energy via Cherenkov-like processes on their way from CERN to Gran Sasso. They then could not be detected with energy in excess of 12GeV , contrary to what is also reported [1] by OPERA. And a similar message is contained in studies by , by Bi et al [4], and by Cowsik et al [5], which argued that the reported superluminality of µ neutrinos would even prevent, over part of the energy range studied by OPERA, the pion-decay processes at CERN, which are partly responsible for the flux of neutrinos reaching Gran Sasso. If these arguments are correct, then it seems unavoidable that the OPERA results are mistaken.But, as we show here, there is a loophole 1 in the arguments reported in Refs. [2-5], ...

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“…The speed of light is universal. This means that the velocity of all other massless particles as well as the limiting maximum velocity of all massive particles coincides with c. The maximum speed of electrons, neutrinos and muons has been shown in various laboratory experiments to coincide with the velocity of light at a level (c particle − c)/c ≤ 10 −6 (Brown et al 1973;Guiragossian et al 1975;Alspector et al 1976;Kalbfleisch et al 1979). Astrophysical observations of radiation from the supernova SN1987A yield for the comparison of photons and neutrinos an estimate which is two orders of magnitude better (Stodolsky 1988;Longo 1987).…”

Section: The Constancy Of the Speed Of Lightmentioning

confidence: 93%

What Determines the Nature of Gravity? A Phenomenological Approach

Lämmerzahl

2009

Space Sci Rev

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The gravitational field can only be explored through the motion of test objects. To achieve this one first has to set up the correct equations of motion. Initially these equations are based on Newton's laws. Corresponding experiments that support Newton's laws are described. Furthermore, the basic characteristics of the motion of test objects in gravitational fields are described. This leads to the notion of Einstein's Equivalence Principle which has as consequence a metric theory of gravity. One particular metric theory is General Relativity based on Einstein's field equations with its particular predictions for effects like periastron advance, light deflection, etc. An overview over the experimental confirmation of General Relativity, in particular those presented at this workshop, is given. This workshop summary ends with open problems. We also describe some of the strategies for the experimental search for a quantum gravity theory.

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Relative Velocity Measurements of Electrons and Gamma Rays at 15 GeV

Cited by 41 publications

References 3 publications

Observations Concerning the Mass Variation in a Galilean - Type Relativity

Observations Concerning the Mass Variation in a Galilean - Type Relativity

Opera Neutrinos and Deformed Special Relativity

What Determines the Nature of Gravity? A Phenomenological Approach

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