DOE PAGES title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Gravitational mass of positron from LEP synchrotron losses

Abstract

General relativity(GR) is the current description of gravity in modern physics. One of the cornerstones of GR, as well as Newton’s theory of gravity, is the weak equivalence principle (WEP), stating that the trajectory of a freely falling test body is independent of its internal structure and composition. WEP is known to be valid for the normal matter with a high precision. However, due to the rarity of antimatter and weakness of the gravitational forces, the WEP has never been confirmed for antimatter. The current direct bounds on the ratio between the gravitational and inertial masses of the antihydrogen do not rule out a repulsive nature for the antimatter gravity. Here we establish an indirect bound of 0.13% on the difference between the gravitational and inertial masses of the positron (antielectron) from the analysis of synchrotron losses at the Large Electron-Positron collider (LEP). As a result, this serves as a confirmation of the conventional gravitational properties of antimatter without common assumptions such as, e.g., coupling of gravity to virtual particles, dynamics of distant astrophysical sources and the nature of absolute gravitational potentials.

Authors:
 [1]
  1. Univ. of Illinois, Chicago, IL (United States); Stony Brook Univ., Stony Brook, NY (United States)
Publication Date:
Research Org.:
State Univ. of New York (SUNY), Albany, NY (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1326647
Grant/Contract Number:  
FG02-88ER40388
Resource Type:
Accepted Manuscript
Journal Name:
Scientific Reports
Additional Journal Information:
Journal Volume: 6; Journal ID: ISSN 2045-2322
Publisher:
Nature Publishing Group
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS

Citation Formats

Kalaydzhyan, Tigran. Gravitational mass of positron from LEP synchrotron losses. United States: N. p., 2016. Web. doi:10.1038/srep30461.
Kalaydzhyan, Tigran. Gravitational mass of positron from LEP synchrotron losses. United States. https://doi.org/10.1038/srep30461
Kalaydzhyan, Tigran. Wed . "Gravitational mass of positron from LEP synchrotron losses". United States. https://doi.org/10.1038/srep30461. https://www.osti.gov/servlets/purl/1326647.
@article{osti_1326647,
title = {Gravitational mass of positron from LEP synchrotron losses},
author = {Kalaydzhyan, Tigran},
abstractNote = {General relativity(GR) is the current description of gravity in modern physics. One of the cornerstones of GR, as well as Newton’s theory of gravity, is the weak equivalence principle (WEP), stating that the trajectory of a freely falling test body is independent of its internal structure and composition. WEP is known to be valid for the normal matter with a high precision. However, due to the rarity of antimatter and weakness of the gravitational forces, the WEP has never been confirmed for antimatter. The current direct bounds on the ratio between the gravitational and inertial masses of the antihydrogen do not rule out a repulsive nature for the antimatter gravity. Here we establish an indirect bound of 0.13% on the difference between the gravitational and inertial masses of the positron (antielectron) from the analysis of synchrotron losses at the Large Electron-Positron collider (LEP). As a result, this serves as a confirmation of the conventional gravitational properties of antimatter without common assumptions such as, e.g., coupling of gravity to virtual particles, dynamics of distant astrophysical sources and the nature of absolute gravitational potentials.},
doi = {10.1038/srep30461},
journal = {Scientific Reports},
number = ,
volume = 6,
place = {United States},
year = {2016},
month = {7}
}

Works referenced in this record:

Die Grundlage der allgemeinen Relativitätstheorie
journal, January 1916


The Confrontation between General Relativity and Experiment
journal, June 2014


The Quantum Theory of the Electron
journal, February 1928

  • Dirac, P. A. M.
  • Proceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences, Vol. 117, Issue 778
  • DOI: 10.1098/rspa.1928.0023

The Positive Electron
journal, March 1933


Description and first application of a new technique to measure the gravitational mass of antihydrogen
journal, April 2013


The arguments against “antigravity” and the gravitational acceleration of antimatter
journal, July 1991


Tests of the Equivalence Principle with neutral kaons
journal, April 1999


Gravitational mass of relativistic matter and antimatter
journal, December 2015


Testing general relativity on accelerators
journal, November 2015


Collective instabilities in high energy accelerators
conference, January 1994

  • Chao, Alex
  • Physics of high energy particles in toroidal systems, AIP Conference Proceedings
  • DOI: 10.1063/1.46542

Experiments to determine the Force of Gravity on Single Electrons and Positrons
journal, November 1968

  • Witteborn, Fred C.; Fairbank, William M.
  • Nature, Vol. 220, Issue 5166
  • DOI: 10.1038/220436a0

A limit on the variation of the speed of light arising from quantum gravity effects
journal, October 2009


Limits to Quantum Gravity Effects on Energy Dependence of the Speed of Light from Observations of TeV Flares in Active Galaxies
journal, September 1999


Severe Limits on Variations of the Speed of Light with Frequency
journal, June 1999


Modern Tests of Lorentz Invariance
journal, September 2005


Works referencing / citing this record:

Tests of discrete symmetries
journal, November 2019


Theoretical aspects of antimatter and gravity
journal, February 2018

  • Blas, Diego
  • Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences, Vol. 376, Issue 2116
  • DOI: 10.1098/rsta.2017.0277