THE PRODUCTION OF THE NEUTRAL AND CHARGED TOP PIONS ASSOCIATED WITH THE W BOSON AT THE ILC

2008 ◽  
Vol 23 (32) ◽  
pp. 5173-5180 ◽  
Author(s):  
YAO-BEI LIU ◽  
SHUAI-WEI WANG
Keyword(s):  
Production Process ◽  
Decay Mode ◽  
Pion Production ◽  
Direct Evidence ◽  
W Boson ◽  
Linear Collider ◽  
International Linear Collider ◽  
Production Rates ◽  
Flavor Changing ◽  
Parameter Values

The top pions [Formula: see text] are the typical particles predicted by the top-color-assisted technicolor (TC2) model, and the observation of these particles can be regarded as the direct evidence of the TC2 model. In this paper, we study the charged and neutral top pion production process [Formula: see text]. The results show that the production rates can reach the level of tens of fb with reasonable parameter values. So one can expect that enough signals could be produced in the International Linear Collider (ILC) experiments. Furthermore, the flavor-changing (FC) decay mode [Formula: see text] is the best channel for detecting the neutral top pion, due to the clean SM background. With a large number of events and the clean background, the neutral top pion should be observable in future ILC experiments.

THE SINGLE NEUTRAL TOP-HIGGS PRODUCTION AT ILC IN THE TC2 MODEL

2011 ◽  
Vol 26 (09) ◽  
pp. 1629-1637 ◽  
Author(s):  
YAO-BEI LIU ◽  
HUI YE ◽  
YONG-HUA CAO
Keyword(s):  
Linear Collider ◽  
International Linear Collider ◽  
Higgs Production ◽  
Production Rates ◽  
Flavor Changing ◽  
Text Production ◽  
Production Processes ◽  
Parameter Values

In the framework of the topcolor-assisted technicolor (TC2) model, we study the neutral top-Higgs [Formula: see text] production processes [Formula: see text], [Formula: see text] and [Formula: see text]. The results show that the production rates can reach the level of a few fb with reasonable parameter values. With the clean background of the flavor-changing [Formula: see text] channel, the top-Higgs events can possibly be detected at the International Linear Collider (ILC) experiments. Therefore, such neutral top-Higgs production processes offer a useful way to probe for neutral top-Higgs and test the TC2 model directly.

PAIR PRODUCTION OF CHARGED TOP-PIONS ASSOCIATED WITH Z GAUGE BOSON IN THE TOPCOLOR-ASSISTED TECHNICOLOR MODEL AT THE ILC

2011 ◽  
Vol 26 (13) ◽  
pp. 2143-2153 ◽  
Author(s):  
JINZHONG HAN ◽  
BINGZHONG LI ◽  
XUELEI WANG
Keyword(s):  
Pair Production ◽  
Production Rate ◽  
Cross Section ◽  
Decay Mode ◽  
Gauge Boson ◽  
Direct Evidence ◽  
Linear Collider ◽  
International Linear Collider ◽  
Technicolor Model ◽  
The Cross

The top-pions [Formula: see text] are the three additional typical particles predicted by the topcolor-assisted technicolor (TC2) model and the observation of these particles can be regarded as the direct evidence of the TC2 model. In this paper, we investigate the production of a pair of charged top-pions associated with Z gauge boson at the International Linear Collider (ILC), i.e. [Formula: see text] and [Formula: see text]. We calculate the production rate of the process [Formula: see text] and present the distributions of the transverse momenta of Z gauge boson and charged top-pion [Formula: see text]. We find that the cross-section of the process [Formula: see text] can reach 1 fb with reasonable parameter space of the TC2 model. Considering the main decay mode of charged top-pion, we find that such a production may provide copious events. While the cross-section of the process [Formula: see text] is below 1 fb, hence the process [Formula: see text] will play an important role in the test of the TC2 model at the ILC when compared with the process [Formula: see text].

scholarly journals Indirect reach of heavy MSSM Higgs bosons by precision measurements at future lepton colliders

2015 ◽  
Vol 30 (33) ◽  
pp. 1550192 ◽  
Author(s):  
Mitsuru Kakizaki ◽  
Shinya Kanemura ◽  
Mariko Kikuchi ◽  
Toshinori Matsui ◽  
Hiroshi Yokoya
Keyword(s):  
Higgs Boson ◽  
Standard Model ◽  
W Boson ◽  
Linear Collider ◽  
Standard Model Prediction ◽  
Branching Fraction ◽  
International Linear Collider ◽  
Higgs Bosons ◽  
Boson Mass ◽  
Electron Positron

In the Minimal Supersymmetric Standard Model (MSSM), the bottom Yukawa coupling of the Higgs boson can considerably deviate from its Standard Model prediction due to nondecoupling effects. We point out that the ratio of the Higgs boson decay branching fraction to a bottom quark pair and that to a W-boson pair from the same production channel is particularly sensitive to large additional MSSM Higgs boson mass regions at future electron–positron colliders. Based on this precision measurement, we explicitly show the indirect discovery reach of the additional Higgs bosons according to planned programs of the International Linear Collider.

RIGHT-HANDED COUPLINGS AND CP VIOLATION IN W BOSON DECAY

1992 ◽  
Vol 07 (33) ◽  
pp. 3101-3108
Author(s):  
MINORU TANAKA
Keyword(s):  
Angular Distribution ◽  
Cp Violation ◽  
Decay Mode ◽  
W Boson ◽  
Linear Collider ◽  
Relative Magnitude ◽  
Polarization Measurement ◽  
Final State ◽  
Order Of Magnitude ◽  
The Right

Parity and CP violation in W boson decay are discussed. It is shown that CP test is possible by measuring the angular distribution in a W boson non-suppressed two-body decay mode without the polarization measurement of the final state fermions. We found that LEP200 and next linear collider (NLC) have non-trivial sensitivity on the right-handed coupling and CP violation. LEP200 will slightly improve the present limit on the right-handed coupling in the [Formula: see text] coupling, and have sensitivity on the relative magnitude of the CP violation to the P violation up to 8×10−2. NLC will improve the former by some factor or even an order of magnitude, and have sensitivity on the latter up to 10−3–10−2.

Triple Higgs boson production at ILC in the Higgs triplet model

2014 ◽  
Vol 29 (23) ◽  
pp. 1450092 ◽  
Author(s):  
Jun Cao ◽  
Jie-Fen Shen
Keyword(s):  
Higgs Boson ◽  
Cross Sections ◽  
Linear Collider ◽  
Production Cross ◽  
International Linear Collider ◽  
Triplet Model ◽  
Large Production ◽  
Doubly Charged ◽  
Parameter Values ◽  
Higgs Triplet Model

Besides the Standard Model (SM)-like Higgs boson h, the Higgs Triplet Model (HTM) predicts the existence of charged and doubly charged Higgs bosons (H±and H±±). In this paper, we focus on the study of the triple Higgs production at the International Linear Collider (ILC): e-e+→hH+H-and e-e+→hH++H–. We present the production cross-sections and discuss the relevant SM backgrounds. Our numerical results show that, with reasonable parameter values, the values of the cross-sections for two processes can reach the level several fb and tens of fb, respectively. Due to large production cross-section and small SM background, the possible signals of H±and H±±might be detected via these processes in the future ILC experiments.

scholarly journals Digital low level rf control system for the International Linear Collider

2018 ◽  
Vol 21 (8) ◽  
Author(s):  
Sigit Basuki Wibowo ◽  
Toshihiro Matsumoto ◽  
Shinichiro Michizono ◽  
Takako Miura ◽  
Feng Qiu ◽  
...  
Keyword(s):  
Control System ◽  
Linear Collider ◽  
International Linear Collider ◽  
Low Level

scholarly journals Digital low level rf control system with four different intermediate frequencies for the International Linear Collider

2017 ◽  
Vol 20 (9) ◽  
Author(s):  
Sigit Basuki Wibowo ◽  
Toshihiro Matsumoto ◽  
Shinichiro Michizono ◽  
Takako Miura ◽  
Feng Qiu ◽  
...  
Keyword(s):  
Control System ◽  
Linear Collider ◽  
International Linear Collider ◽  
Low Level
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