Effects of TeV scale gravity on e+e−→W+W
We study the process e+e−→W+W− to probe low-scale gravity at high energy linear colliders. A characteristic signature of extra dimensions models is the forward–backward asymmetry due to the interference of spin-2 graviton and spin-1 SM gauge boson exchange terms, even when right-polarised electron b...
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Published in | Physics letters. B Vol. 534; no. 1-4; pp. 131 - 136 |
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Main Author | |
Format | Journal Article |
Language | English |
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Elsevier B.V
16.05.2002
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Abstract | We study the process e+e−→W+W− to probe low-scale gravity at high energy linear colliders. A characteristic signature of extra dimensions models is the forward–backward asymmetry due to the interference of spin-2 graviton and spin-1 SM gauge boson exchange terms, even when right-polarised electron beam is used. Our analysis shows that larger than 5% asymmetry is possible at a linear collider with s=500 (800) GeV if the mass scale, MS is smaller than 2.7 (4.5) TeV. W− polarisation factors measured with a few percent accuracy will also be able to put similar limits on MS. |
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AbstractList | We study the process e+e−→W+W− to probe low-scale gravity at high energy linear colliders. A characteristic signature of extra dimensions models is the forward–backward asymmetry due to the interference of spin-2 graviton and spin-1 SM gauge boson exchange terms, even when right-polarised electron beam is used. Our analysis shows that larger than 5% asymmetry is possible at a linear collider with s=500 (800) GeV if the mass scale, MS is smaller than 2.7 (4.5) TeV. W− polarisation factors measured with a few percent accuracy will also be able to put similar limits on MS. |
Author | Poulose, P. |
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Cites_doi | 10.1103/PhysRevD.59.105006 10.1016/S0370-2693(98)00860-0 10.1103/PhysRevD.51.1402 10.1016/S0370-2693(01)01425-3 10.1103/PhysRevLett.83.3370 10.1016/S0370-2693(98)00466-3 10.1103/PhysRevLett.83.2112 10.1103/PhysRevD.59.086004 10.1016/S0370-2693(99)00432-3 10.1103/PhysRevLett.83.4690 10.1016/S0550-3213(99)00044-9 |
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