Constraints on electron-quark contact interactions and implications to models of leptoquarks and extra Z bosons

被引：48

作者：

Cheung, K ^{[1
]}

机构：

[1] Natl Tsing Hua Univ, Natl Ctr Theoret Sci, Hsinchu, Taiwan

来源：

PHYSICS LETTERS B | 2001年 / 517卷 / 1-2期

关键词：

D O I：

10.1016/S0370-2693(01)00973-X

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We update the global constraint on four-fermion eeqq contact interactions. In this update, we included the published data of H1 and ZEUS for the 1994-1996 run in the e(+) p mode and the newly published data of H1 for the 1999 run in the e(-) p mode. Other major changes are the new LEPII data on hadronic cross sections above 189 GeV, and the atomic parity violation measurement on cesium because of a new and improved atomic calculation, which drives the data within 1 sigma of the standard model value. The global data do not show any evidence for contact interactions, and we obtain 95% C.L. limits on the compositeness scale. A limit of Lambda (eu)(LL+(-)) > 23 (12.5) TeV is obtained. Implications to models of leptoquarks and extra Z bosons are examined. (C) 2001 Elsevier Science B.V. All rights reserved.

引用

页码：167 / 176

页数：10

共 41 条

[1] Measurement of the high-mass Drell-Yan cross section and limits on quark-electron compositeness scales [J].

Abbott, B ;

Abolins, M ;

Abramov, V ;

Acharya, BS ;

Adam, I ;

Adams, DL ;

Adams, M ;

Ahn, S ;

Aihara, H ;

Alves, GA ;

Amos, N ;

Anderson, EW ;

Baarmand, MM ;

Babintsev, VV ;

Babukhadia, L ;

Baden, A ;

Baldin, B ;

Banerjee, S ;

Bantly, J ;

Barberis, E ;

Baringer, P ;

Bartlett, JF ;

Belyaev, A ;

Beri, SB ;

Bertram, I ;

Bezzubov, VA ;

Bhat, PC ;

Bhatnagar, V ;

Bhattacharjee, M ;

Biswas, N ;

Blazey, G ;

Blessing, S ;

Bloom, P ;

Boehnlein, A ;

Bojko, NI ;

Borcherding, F ;

Boswell, C ;

Brandt, A ;

Breedon, R ;

Brock, R ;

Bross, A ;

Buchholz, D ;

Burtovoi, VS ;

Butler, JM ;

Carvalho, W ;

Casey, D ;

Casilum, Z ;

Castilla-Valdez, H ;

Chakraborty, D ;

Chang, SM .

PHYSICAL REVIEW LETTERS, 1999, 82 (24) :4769-4774

[2] Limits on quark-lepton compositeness scales from dileptons produced in 1.8 TeV p(p)over-bar collisions [J].

Abe, F ;

Akimoto, H ;

Akopian, A ;

Albrow, MG ;

Amendolia, SR ;

Amidei, D ;

Antos, J ;

Aota, S ;

Apollinari, G ;

Asakawa, T ;

Ashmanskas, W ;

Atac, M ;

Azfar, F ;

AzziBacchetta, P ;

Bacchetta, N ;

Badgett, W ;

Bagdasarov, S ;

Bailey, MW ;

Bao, J ;

deBarbaro, P ;

BarbaroGaltieri, A ;

Barnes, VE ;

Barnett, BA ;

Barone, M ;

Barzi, E ;

Bauer, G ;

Baumann, T ;

Bedeschi, F ;

Behrends, S ;

Belforte, S ;

Bellettini, G ;

Bellinger, J ;

Benjamin, D ;

Benlloch, J ;

Bensinger, J ;

Benton, D ;

Beretvas, A ;

Berge, JP ;

Berryhill, J ;

Bertolucci, S ;

Bettelli, S ;

Bevensee, B ;

Bhatti, A ;

Biery, K ;

Binkley, M ;

Bisello, D ;

Blair, RE ;

Blocker, C ;

Bodek, A ;

Bokhari, W .

PHYSICAL REVIEW LETTERS, 1997, 79 (12) :2198-2203

[3]

Adloff C, 2000, EUR PHYS J C, V13, P609, DOI [10.1007/s100520050721, 10.1007/s100520000316]

[4] Observation of events at very high Q(2) in ep collisions at HERA [J].

Adloff, C ;

Aid, S ;

Anderson, M ;

Andreev, V ;

Andrieu, B ;

Arkadov, V ;

Arndt, C ;

Ayyaz, I ;

Babaev, A ;

Bahr, J ;

Ban, J ;

Ban, Y ;

Baranov, P ;

Barrelet, E ;

Barschke, R ;

Bartel, W ;

Bassler, U ;

Beck, HP ;

Beck, M ;

Behrend, HJ ;

Belousov, A ;

Berger, C ;

Bernardi, G ;

BertrandCoremans, G ;

Beyer, R ;

Biddulph, P ;

Bispham, P ;

Bizot, JC ;

Borras, K ;

Botterweck, F ;

Boudry, V ;

Bourov, S ;

Braemer, A ;

Braunschweig, W ;

Brisson, V ;

Bruckner, W ;

Bruel, P ;

Bruncko, D ;

Brune, C ;

Buchholz, R ;

Bungener, L ;

Burger, J ;

Busser, FW ;

Buniatian, A ;

Burke, S ;

Buschhorn, G ;

Calvet, D ;

Campbell, AJ ;

Carli, T ;

Charlet, M .

ZEITSCHRIFT FUR PHYSIK C-PARTICLES AND FIELDS, 1997, 74 (02) :191-205

[5] What if charged current events at large Q(2) are observed at HERA? [J].

Altarelli, G ;

Giudice, GF ;

Mangano, ML .

NUCLEAR PHYSICS B, 1997, 506 (1-2) :29-47

[6]

[Anonymous], P WORKSH PHYS HERA

[7] Atomic parity violation, leptoquarks, and contact interactions [J].

Barger, V ;

Cheung, K .

PHYSICS LETTERS B, 2000, 480 (1-2) :149-154

[8] Global study of electron-quark contact interactions [J].

Barger, V ;

Cheung, K ;

Hagiwara, K ;

Zeppenfeld, D .

PHYSICAL REVIEW D, 1998, 57 (01) :391-404

[9] Measurement of the 6S→7S transition polarizability in atomic cesium and an improved test of the standard model [J].

Bennett, SC ;

Wieman, CE .

PHYSICAL REVIEW LETTERS, 1999, 82 (12) :2484-2487

[10] Intermittency regions at high energies [J].

Golyak, I ;

Andre, T .

ZEITSCHRIFT FUR PHYSIK C-PARTICLES AND FIELDS, 1997, 74 (02) :275-278

← 1 2 3 4 5 →