Limits on Lepton-quark contact interactions from the quark forward-backward asymmetry in e+e- annihilation

K. Hagiwara, Makoto Sakuda, N. Terunuma

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

Lepton-quark contact interactions expected in composite theories can be tested using the forward-backward (F-B) asymmetry of charm or bottom hadrons in e+e- annihilation. Existing data on the F-B asymmetry of D* and D mesons can already set lower limits typically exceeding 1 TeV (95% CL) on the compositeness scale. These limits are better than those for pure quark contact interactions set by the CERN pp̄ collider experiments, and are comparable to purely leptonic ones obtained in e+e- annihilation experiments. The implication of bottom quark asymmetry in the presence of B0-B0 mixing is also briefly discussed.

Original languageEnglish
Pages (from-to)369-374
Number of pages6
JournalPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume219
Issue number2-3
DOIs
Publication statusPublished - Mar 16 1989
Externally publishedYes

Fingerprint

leptons
electric contacts
asymmetry
quarks
interactions
hadrons
mesons
composite materials

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

Cite this

Limits on Lepton-quark contact interactions from the quark forward-backward asymmetry in e+e- annihilation. / Hagiwara, K.; Sakuda, Makoto; Terunuma, N.

In: Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, Vol. 219, No. 2-3, 16.03.1989, p. 369-374.

Research output: Contribution to journalArticle

@article{a8d6c8c8da34462799bb87fb6e646577,
title = "Limits on Lepton-quark contact interactions from the quark forward-backward asymmetry in e+e- annihilation",
abstract = "Lepton-quark contact interactions expected in composite theories can be tested using the forward-backward (F-B) asymmetry of charm or bottom hadrons in e+e- annihilation. Existing data on the F-B asymmetry of D* and D mesons can already set lower limits typically exceeding 1 TeV (95{\%} CL) on the compositeness scale. These limits are better than those for pure quark contact interactions set by the CERN pp̄ collider experiments, and are comparable to purely leptonic ones obtained in e+e- annihilation experiments. The implication of bottom quark asymmetry in the presence of B0-B0 mixing is also briefly discussed.",
author = "K. Hagiwara and Makoto Sakuda and N. Terunuma",
year = "1989",
month = "3",
day = "16",
doi = "10.1016/0370-2693(89)90406-1",
language = "English",
volume = "219",
pages = "369--374",
journal = "Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics",
issn = "0370-2693",
publisher = "Elsevier",
number = "2-3",

}

TY - JOUR

T1 - Limits on Lepton-quark contact interactions from the quark forward-backward asymmetry in e+e- annihilation

AU - Hagiwara, K.

AU - Sakuda, Makoto

AU - Terunuma, N.

PY - 1989/3/16

Y1 - 1989/3/16

N2 - Lepton-quark contact interactions expected in composite theories can be tested using the forward-backward (F-B) asymmetry of charm or bottom hadrons in e+e- annihilation. Existing data on the F-B asymmetry of D* and D mesons can already set lower limits typically exceeding 1 TeV (95% CL) on the compositeness scale. These limits are better than those for pure quark contact interactions set by the CERN pp̄ collider experiments, and are comparable to purely leptonic ones obtained in e+e- annihilation experiments. The implication of bottom quark asymmetry in the presence of B0-B0 mixing is also briefly discussed.

AB - Lepton-quark contact interactions expected in composite theories can be tested using the forward-backward (F-B) asymmetry of charm or bottom hadrons in e+e- annihilation. Existing data on the F-B asymmetry of D* and D mesons can already set lower limits typically exceeding 1 TeV (95% CL) on the compositeness scale. These limits are better than those for pure quark contact interactions set by the CERN pp̄ collider experiments, and are comparable to purely leptonic ones obtained in e+e- annihilation experiments. The implication of bottom quark asymmetry in the presence of B0-B0 mixing is also briefly discussed.

UR - http://www.scopus.com/inward/record.url?scp=45149146372&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=45149146372&partnerID=8YFLogxK

U2 - 10.1016/0370-2693(89)90406-1

DO - 10.1016/0370-2693(89)90406-1

M3 - Article

AN - SCOPUS:45149146372

VL - 219

SP - 369

EP - 374

JO - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

JF - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

SN - 0370-2693

IS - 2-3

ER -