نتایج جستجو برای: پروتونهای mev 69 45

تعداد نتایج: 231471  

2004
Ting-Wai Chiu Tung-Han Hsieh

We investigate the mass spectrum of pentaquark baryons with anticharm quark, in quenched lattice QCD with exact chiral symmetry. By chiral extrapolation to mπ = 135 MeV, we determine the masses of the lowest lying states of the antisextet (JΠ = 1/2+) and the triplet (JΠ = 1/2), in the isospin limit (mu = md). The masses of the antisextet are: 2977(109) MeV for the iso-singlet Θc([ud][ud]c̄); 318...

Journal: :Physical review letters 2013
M Ablikim M N Achasov D J Ambrose F F An Q An Z H An J Z Bai Y Ban J Becker N Berger M Bertani J M Bian E Boger O Bondarenko I Boyko R A Briere V Bytev X Cai A Calcaterra G F Cao J F Chang G Chelkov G Chen H S Chen J C Chen M L Chen S J Chen Y Chen Y B Chen H P Cheng Y P Chu D Cronin-Hennessy H L Dai J P Dai D Dedovich Z Y Deng A Denig I Denysenko M Destefanis W M Ding Y Ding L Y Dong M Y Dong S X Du J Fang S S Fang L Fava F Feldbauer C Q Feng R B Ferroli C D Fu J L Fu Y Gao C Geng K Goetzen W X Gong W Gradl M Greco M H Gu Y T Gu Y H Guan A Q Guo L B Guo Y P Guo Y L Han X Q Hao F A Harris K L He M He Z Y He T Held Y K Heng Z L Hou H M Hu J F Hu T Hu B Huang G M Huang J S Huang X T Huang Y P Huang T Hussain C S Ji Q Ji X B Ji X L Ji L K Jia L L Jiang X S Jiang J B Jiao Z Jiao D P Jin S Jin F F Jing N Kalantar-Nayestanaki M Kavatsyuk W Kühn W Lai J S Lange J K C Leung C H Li Cheng Li Cui Li D M Li F Li G Li H B Li J C Li K Li Lei Li N B Li Q J Li S L Li W D Li W G Li X L Li X N Li X Q Li X R Li Z B Li H Liang Y F Liang Y T Liang G R Liao X T Liao B J Liu C L Liu C X Liu C Y Liu F H Liu Fang Liu Feng Liu H Liu H B Liu H H Liu H M Liu H W Liu J P Liu K Y Liu Kai Liu Kun Liu P L Liu S B Liu X Liu X H Liu Y Liu Y B Liu Z A Liu Zhiqiang Liu Zhiqing Liu H Loehner G R Lu H J Lu J G Lu Q W Lu X R Lu Y P Lu C L Luo M X Luo T Luo X L Luo M Lv C L Ma F C Ma H L Ma Q M Ma S Ma T Ma X Y Ma Y Ma F E Maas M Maggiora Q A Malik H Mao Y J Mao Z P Mao J G Messchendorp J Min T J Min R E Mitchell X H Mo C Morales Morales C Motzko N Yu Muchnoi Y Nefedov C Nicholson I B Nikolaev Z Ning S L Olsen Q Ouyang S Pacetti J W Park M Pelizaeus K Peters J L Ping R G Ping R Poling E Prencipe C S J Pun M Qi S Qian C F Qiao X S Qin Y Qin Z H Qin J F Qiu K H Rashid G Rong X D Ruan A Sarantsev J Schulze M Shao C P Shen X Y Shen H Y Sheng M R Shepherd X Y Song S Spataro B Spruck D H Sun G X Sun J F Sun S S Sun X D Sun Y J Sun Y Z Sun Z J Sun Z T Sun C J Tang X Tang E H Thorndike H L Tian D Toth M Ullrich G S Varner B Wang B Q Wang J X Wang K Wang L L Wang L S Wang M Wang P Wang P L Wang Q Wang Q J Wang S G Wang X F Wang X L Wang Y D Wang Y F Wang Y Q Wang Z Wang Z G Wang Z Y Wang D H Wei P Weidenkaff Q G Wen S P Wen M Werner U Wiedner L H Wu N Wu S X Wu W Wu Z Wu L G Xia Z J Xiao Y G Xie Q L Xiu G F Xu G M Xu H Xu Q J Xu X P Xu Y Xu Z R Xu F Xue Z Xue L Yan W B Yan Y H Yan H X Yang T Yang Y Yang Y X Yang H Ye M Ye M H Ye B X Yu C X Yu J S Yu S P Yu C Z Yuan W L Yuan Y Yuan A A Zafar A Zallo Y Zeng B X Zhang B Y Zhang C C Zhang D H Zhang H H Zhang H Y Zhang J Zhang J G Zhang J Q Zhang J W Zhang J Y Zhang J Z Zhang L Zhang S H Zhang T R Zhang X J Zhang X Y Zhang Y Zhang Y H Zhang Y S Zhang Z P Zhang Z Y Zhang G Zhao H S Zhao J W Zhao K X Zhao Lei Zhao Ling Zhao M G Zhao Q Zhao S J Zhao T C Zhao X H Zhao Y B Zhao Z G Zhao A Zhemchugov B Zheng J P Zheng Y H Zheng Z P Zheng B Zhong J Zhong L Zhou X K Zhou X R Zhou C Zhu K Zhu K J Zhu S H Zhu X L Zhu X W Zhu Y M Zhu Y S Zhu Z A Zhu J Zhuang B S Zou J H Zou J X Zuo

Based on 106×10(6)ψ(3686) events collected with the BESIII detector at the BEPCII facility, a partial wave analysis of ψ(3686)→ppπ0 is performed. The branching fraction of this channel has been determined to be B(ψ(3686)→ppπ0)=(1.65±0.03±0.15)×10(-4). In this decay, 7 N* intermediate resonances are observed. Among these, two new resonances, N(2300) and N(2570) are significant, one 1/2+ resonanc...

Journal: :Australian Journal of Physics 1975

1997
T. Han

We summarize the potential of muon colliders to probe fundamental physics. WW, t̄t, and Zh threshold measurements could determine masses to precisions ∆MW = 6 MeV, ∆mt = 70 MeV, and ∆mh = 45 MeV, to test electroweak radiative corrections. With s-channel Higgs production, unique to a muon collider, the Higgs mass could be pinpointed (∆mh < 1 MeV) and its width measured. The other Higgs bosons of ...

2010
María I. Ayuso Macarena Hernández-Jiménez María E. Martín Matilde Salinas Alberto Alcázar

Eukaryotic initiation factor (eIF) 4E-binding protein 1 (4E-BP1) is a translational repressor that is characterized by its capacity to bind specifically to eIF4E and inhibit its interaction with eIF4G. Phosphorylation of 4E-BP1 regulates eIF4E availability, and therefore, cap-dependent translation, in cell stress. This study reports a physiological study of 4E-BP1 regulation by phosphorylation ...

2008
O. Kaltschmidt F. Wissmann

Differential cross sections for elastic scattering of photons have been measured for 40Ca at energies of 58 and 74 MeV and for 16O and 4He at 61 MeV, in the angular range from 45◦ to 150◦. Evidence is obtained that there are no significant in-medium modifications of the electromagnetic polarizabilities except for those originating from meson exchange currents. PACS number: 25.20.Dc

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه سیستان و بلوچستان - دانشکده علوم پایه 1392

در این پایان نامه، بررسی دینامیک 1h nmr در ایلیدهای پایدار فسفر، به عنوان محصول عمده از واکنش افزایشی 1:1:1، بین تری فنیل فسفین با دی متیل استیلن دی کربوکسیلات در حضور مشتقات ایمیدازول یا 1و5 دی فنیل کربازون مطالعه می شود. معمولآ، ایلیدهای پایدار بصورت مخلوطی از دو ایزومر هندسی در اثر چرخش محدود شده حول پیوند دوگانه کربن-کربن بوجود می آیند. پارامتر های فعال سازی در این ترکیبات برای چرخش های ساد...

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